PLMR


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockSharesIssued
us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:Revenues

us-gaap:PremiumsEarnedNet

us-gaap:NetInvestmentIncome

us-gaap:GainLossOnInvestments

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet

us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense

us-gaap:BenefitsLossesAndExpenses

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

plmr:CommissionAndOtherIncome

plmr:DebtAndEquitySecuritiesRealizedGain

plmr:DebtAndEquitySecuritiesRealizedLoss

plmr:PercentageOfGrossWrittenPremiums
us-gaap:ProductOrService
us-gaap:StatementGeographical

plmr:ProceedsFromIssuanceOfCommonStockNetOfUnderwriterDiscountsCommissionsAndEstimatedOfferingExpenses

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition
us-gaap:StatementEquityComponents

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:CededPremiumsWritten

us-gaap:DebtAndEquitySecuritiesGainLoss

us-gaap:DebtAndEquitySecuritiesRealizedGainLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EquitySecuritiesFvNiRealizedLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:IncreaseDecreaseInUnearnedPremiumsNet

us-gaap:IncurredClaimsPropertyCasualtyAndLiability

us-gaap:InvestmentIncomeDividend

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInvestmentExpense

us-gaap:InvestmentIncomeNet

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1
us-gaap:StatementEquityComponents
us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherUnderwritingExpense

us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PremiumsWrittenGross
us-gaap:ProductOrService
us-gaap:StatementGeographical

us-gaap:PremiumsWrittenNet

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodTax
us-gaap:PlanName
us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesNewIssues
us-gaap:SubsidiarySaleOfStock

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
plmr:CashCashEquivalentsAndRestrictedCashFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:AccountsPayableAndOtherAccruedLiabilities

us-gaap:AccruedInvestmentIncomeReceivable
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:CededPremiumsPayable

us-gaap:DebtInstrumentFaceAmount

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions

us-gaap:DeferredPolicyAcquisitionCosts

us-gaap:EquitySecuritiesFvNiCost

us-gaap:FundsHeldUnderReinsuranceAgreementsLiability

us-gaap:Investments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

us-gaap:PreferredStockSharesAuthorized

us-gaap:PremiumsReceivableAtCarryingValue

us-gaap:PrepaidExpenseAndOtherAssets

us-gaap:PrepaidReinsurancePremiums

us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments

us-gaap:ReinsuranceRecoverablesOnPaidLosses

us-gaap:RestrictedCash
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:SubsidiarySaleOfStock
us-gaap:SharePrice

us-gaap:TaxesPayableCurrentAndNoncurrent

us-gaap:UnearnedPremiums

Tables

  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:CommonStockSharesIssued █▇▆▆▆▁▁25.46832124.23986123.4687523.4687523.4687517.017.0NANANA
us-gaap:CommonStockSharesOutstanding █▇▆▆▆▁▁25.46832124.23986123.4687523.4687523.4687517.017.0NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁25.05702924.778608NA23.88513722.10500917.0NA17.017.0NA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁24.34342524.119263NA23.4687521.97596217.0NA17.017.0NA
us-gaap:EarningsPerShareBasic ███▇▇▁▇▆█▇0.490.490.460.320.3-0.850.240.090.410.33
us-gaap:EarningsPerShareDiluted ███▇▇▁▇▆█▇0.480.480.450.310.3-0.850.240.090.410.33
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:Revenues █▇▆▅▄▃▁▂▂▂43.14938.01934.62330.46125.90522.30715.6418.91619.89218.523
us-gaap:PremiumsEarnedNet █▇▅▄▃▂▁▁▂▂39.3234.80630.98727.66223.20818.3517.61716.03618.27917.987
us-gaap:NetInvestmentIncome ██▇▆▅▃▃▂▂▁2114000.02035000.01803000.01729000.01483000.0960000.01027000.0865000.0729000.0617000.0
us-gaap:GainLossOnInvestments ▆▆▇▆▆█▁▇▅▄778000.0440000.01178000.0361000.0493000.02411000.0-3538000.01336000.0255000.0-621000.0
us-gaap:PolicyholderBenefitsAndClaimsIncurredNet NA1.8632.1952.4390.6430.316-0.7695.3740.7320.938
us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense █▆▅▄▃▁▁▁▂▂14.88613.04611.0710.2438.9716.9756.5926.3927.457.79
us-gaap:BenefitsLossesAndExpenses ▆▄▃▄▃█▁▃▁▁27.8422.8620.21621.01217.41836.57311.5217.34712.95512.937
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ███▇▆▁▅▅▆▆15.30915.15914.4069.4498.487-14.2664.1221.5696.9375.586
us-gaap:IncomeTaxExpenseBenefit ███▅▅▁▁▁▁▁3297000.03384000.03527000.01995000.01789000.0145000.0-5000.03000.03000.0-6000.0
us-gaap:NetIncomeLoss ███▇▇▁▆▅▇▆12.01211.77510.887.4546.698-14.4114.1271.5666.9345.592
us-gaap:ComprehensiveIncomeNetOfTax █▅▅▅▅▁▄▄▅▄22.6885.9429.678.4289.996-12.2245.0851.2576.8434.693
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:Assets █▅▄▄▃▁▁584.05443.643395.462372.833349.428246.24231.134NANANA
us-gaap:Liabilities █▆▅▄▂▂▁208.807182.823176.906164.371149.792144.331134.842NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▅▄▄▃▁▁584.05443.643395.462372.833349.428246.24231.134NANANA
us-gaap:StockholdersEquity █▅▄▄▄▁▁▁▁▁375.243260.82218.556208.462199.636101.90996.29291.20789.95183.107
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue █▂▃▁▁▁▁109.32323.84533.11916.47714.40510.4949.525NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:PropertyPlantAndEquipmentNet ▁▂▃▄▅▇█791000.0811000.0845000.0860000.0886000.0921000.0947000.0NANANA
us-gaap:EquitySecuritiesFvNi █▁▁▁▁▁▂37.64922.87622.32822.32622.36821.77825.171NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:DeferredIncomeTaxLiabilitiesNet █▁▃4459000.01033000.01999000.0NANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:StockholdersEquity █▅▄▄▄▁▁▁▁▁375.243260.82218.556208.462199.636101.90996.29291.20789.95183.107
 us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncomeNA-1147000.04686000.05896000.04922000.01624000.0-563000.0-1521000.0-1212000.0-1121000.0
us-gaap:AdditionalPaidInCapitalCommonStock █▃▁308.071216.334180.012NANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▆▅▃▂▁▄57.64145.63133.85622.97715.5238.82428.355NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax █▁▅▆▅▃▁9529000.0-1147000.04686000.05896000.04922000.01624000.0-563000.0NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues NA35.464-0.001-0.012NANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapitalNA35.464-0.001-0.012NANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂█▃▇▆▂▃▁▃▄2.69521.8046.04118.76614.4362.4576.9950.636.7738.41
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▂█▆▁▇▇▇▇▆-8.184-66.87410.407-16.733-77.873.63-6.607-1.551-5.899-11.308
us-gaap:NetCashProvidedByUsedInFinancingActivities █▄▁▁▆▁▁91.27235.88-0.001-0.01267.424-5.120.0NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect █▁▃▂▂▂▂▂▂▁85.783-9.1916.4472.0213.990.9670.3880.6280.874-2.898
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂█▃▇▆▂▃▁▃▄2.69521.8046.04118.76614.4362.4576.9950.636.7738.41
us-gaap:NetIncomeLoss ███▇▇▁▆▅▇▆12.01211.77510.887.4546.698-14.4114.1271.5666.9345.592
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▂█▆▁▇▇▇▇▆-8.184-66.87410.407-16.733-77.873.63-6.607-1.551-5.899-11.308
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▁▂▁▁▁▁▂▁█39000.024000.043000.028000.017000.027000.016000.044000.023000.0249000.0
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities █▄▁▁▆▁▁91.27235.88-0.001-0.01267.424-5.120.0NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value25242323231717
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value252423232317171717171717
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value25242323231717
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value25242322171717
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value24242321171717
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.490.490.460.320.3-0.850.240.090.410.33
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.480.480.450.310.3-0.850.240.090.410.33
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value43383430252215181918
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Premiums Earned Net

us-gaap:PremiumsEarnedNet



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value39343027231817161817
Percentage of PremiumsEarnedNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues91.191.589.590.889.682.3112.684.891.997.1

Net Investment Income

us-gaap:NetInvestmentIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2114000.02035000.01803000.01729000.01483000.0960000.01027000.0865000.0729000.0617000.0
Percentage of NetInvestmentIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.95.45.25.75.74.36.64.63.73.3

Gain Loss On Investments

us-gaap:GainLossOnInvestments



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value778000.0440000.01178000.0361000.0493000.02411000.0-3538000.01336000.0255000.0-621000.0
Percentage of GainLossOnInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.81.23.41.21.910.8-22.67.11.3-3.4

Policyholder Benefits And Claims Incurred Net

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.8632.1952.4390.6430.316-0.7695.3740.7320.938
Percentage of PolicyholderBenefitsAndClaimsIncurredNet100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.96.38.02.51.4-4.928.43.75.1

Deferred Policy Acquisition Cost Amortization Expense

us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value141311108.9716.9756.5926.3927.457.79
Percentage of DeferredPolicyAcquisitionCostAmortizationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues34.534.332.033.634.631.342.133.837.542.1

Benefits Losses And Expenses

us-gaap:BenefitsLossesAndExpenses



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value27222021173611171212
Percentage of BenefitsLossesAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues64.560.158.469.067.2164.073.791.765.169.8

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1515149.4498.487-14.2664.1221.5696.9375.586
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues35.539.941.631.032.8-64.026.48.334.930.2

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3297000.03384000.03527000.01995000.01789000.0145000.0-5000.03000.03000.0-6000.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues7.68.910.26.56.90.7-0.00.00.0-0.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1211107.4546.698-14.4114.1271.5666.9345.592
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues27.831.031.424.525.9-64.626.48.334.930.2

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1211107.4546.699-14.4114.1271.5656.9355.592
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.099.9100.0100.0
Percentage of Revenues27.831.031.424.525.9-64.626.48.334.930.2
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value225.9429.678.4289.996-12.2245.0851.2576.8434.693
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues52.615.627.927.738.6-54.832.56.634.425.3

Assets

us-gaap:Assets



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value584443395372349246231
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value208182176164149144134
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.841.244.744.142.958.658.3

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value584443395372349246231
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value375260218208199101969189837873
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets64.258.855.355.957.141.441.70.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value9.529-1.1474.6865.8964.9221.624-0.563-1.521-1.212-1.1212.9931.017
Percentage of StockholdersEquity2.5-0.42.12.82.51.6-0.6-1.7-1.3-1.33.81.4
Percentage of Assets1.6-0.31.21.61.40.7-0.20.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value30821618017917991686868686868
Percentage of StockholdersEquity82.182.982.486.189.889.771.175.176.282.487.493.7
Percentage of Assets52.748.845.548.251.337.129.60.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value57453322158.824282422156.9213.592
Percentage of StockholdersEquity15.417.515.511.07.88.729.426.625.218.98.84.9
Percentage of Assets9.910.38.66.24.43.612.30.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10923331614109.525
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.75.48.44.44.14.34.1

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value791000.0811000.0845000.0860000.0886000.0921000.0947000.0
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.20.20.20.30.40.4

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value37222222222125
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.45.25.66.06.48.810.9

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-31
Value372222222125
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0
Percentage of Assets6.45.26.06.48.810.9
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value37222222222125
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.45.25.66.06.48.810.9
Percentage of Assets us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-06-302020-03-312019-12-31
Value4459000.01033000.01999000.0
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0
Percentage of Assets0.80.20.5

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value375260218208199101969189837873
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets64.258.855.355.957.141.441.70.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value9.529-1.1474.6865.8964.9221.624-0.563-1.521-1.212-1.1212.9931.017
Percentage of StockholdersEquity2.5-0.42.12.82.51.6-0.6-1.7-1.3-1.33.81.4
Percentage of Assets1.6-0.31.21.61.40.7-0.20.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value30821618017917991686868686868
Percentage of StockholdersEquity82.182.982.486.189.889.771.175.176.282.487.493.7
Percentage of Assets52.748.845.548.251.337.129.60.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value57453322158.824282422156.9213.592
Percentage of StockholdersEquity15.417.515.511.07.88.729.426.625.218.98.84.9
Percentage of Assets9.910.38.66.24.43.612.30.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value-1147000.04686000.05896000.04922000.01624000.0-563000.0-1521000.0-1212000.0-1121000.02993000.01017000.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.31.21.61.40.7-0.20.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock



Period End2020-06-302020-03-312019-12-31
Value308216180
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0
Percentage of Assets52.748.845.5

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-01-01
Value57453322158.824283.2
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.910.38.66.24.43.612.30.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-01-01
Value9529000.0-1147000.04686000.05896000.04922000.01624000.0-563000.03200000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.6-0.31.21.61.40.7-0.20.0

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues



Period End2020-03-312019-12-312019-09-30
Value35-0.001-0.012
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0
Percentage of Assets0.00.00.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-30
Value35-0.001-0.012
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0
Percentage of Assets0.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.695216.04118142.4576.9950.636.7738.41
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.257.417.461.655.711.044.73.334.045.4

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-8184000.0-66874000.010407000.0-16733000.0-77870000.03630000.0-6607000.0-1551000.0-5899000.0-11308000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-19.0-175.930.1-54.9-300.616.3-42.2-8.2-29.7-61.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9135-0.001-0.01267-5.120.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.00.0
Percentage of Revenues211.594.4-0.0-0.0260.3-23.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value85-9.19162.0213.990.9670.3880.6280.874-2.898
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues198.8-24.247.56.615.44.32.53.34.4-15.6

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.695216.04118142.4576.9950.636.7738.41
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.257.417.461.655.711.044.73.334.045.4

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1211107.4546.698-14.4114.1271.5666.9345.592
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues27.831.031.424.525.9-64.626.48.334.930.2

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1211107.4546.699-14.4114.1271.5656.9355.592
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.099.9100.0100.0
Percentage of Revenues27.831.031.424.525.9-64.626.48.334.930.2
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-8.184-66.87410-16.733-77.873.63-6.607-1.551-5.899-11.308
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-19.0-175.930.1-54.9-300.616.3-42.2-8.2-29.7-61.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value39000.024000.043000.028000.017000.027000.016000.044000.023000.0249000.0
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9135-0.001-0.01267-5.120.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.00.0
Percentage of Revenues211.594.4-0.0-0.0260.3-23.00.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:EmployeeStockOption



Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value1008900.01052100.01046400.0985210.0985210.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0

us-gaap:AwardType, us-gaap:PlanName

us-gaap:EmployeeStockOption, plmr:EquityIncentivePlan2019



Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value1008900.01052100.01046400.0985210.0985210.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption



Period End2020-06-302020-03-312019-12-31
Value18.7517.2617.05
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value10924331614109.9249.5368.9088.034109.812
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plmr:CommissionAndOtherIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value937000.0738000.0654000.0709000.0721000.0586000.0536000.0679000.0629000.0540000.0
Percentage of CommissionAndOtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plmr:DebtAndEquitySecuritiesRealizedGain



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value175000.015000.01383000.038000.053000.0110000.03865000.029000.0386000.035000.0
Percentage of DebtAndEquitySecuritiesRealizedGain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plmr:DebtAndEquitySecuritiesRealizedLoss



Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value46000.0-96000.022000.03000.0222000.0-3705000.0331000.03734000.0488000.0
Percentage of DebtAndEquitySecuritiesRealizedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

plmr:PercentageOfGrossWrittenPremiums



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.01.001.01.01.001.01.01.0
Percentage of PercentageOfGrossWrittenPremiums100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:ProductOrService

plmr:CommercialAllRisk



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.1770.174-0.0090.1270.1380.14-0.0980.1210.1170.086
Percentage of PercentageOfGrossWrittenPremiums17.717.40.012.713.814.00.012.111.78.6

plmr:CommercialEarthquake



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.1410.1520.0310.1070.1250.1210.050.0850.080.171
Percentage of PercentageOfGrossWrittenPremiums14.115.20.010.712.512.10.08.58.017.1

plmr:FloodInsuranceProduct



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0240.0210.0010.0220.0220.0140.0010.0140.0140.011
Percentage of PercentageOfGrossWrittenPremiums2.42.10.02.22.21.40.01.41.41.1

plmr:HawaiiHurricane



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0390.038-0.0020.050.0460.038-0.0030.0650.0540.044
Percentage of PercentageOfGrossWrittenPremiums3.93.80.05.04.63.80.06.55.44.4

plmr:InlandMarine



Period End2020-06-302019-06-30
Value0.0410.004
Percentage of PercentageOfGrossWrittenPremiums4.10.4

plmr:ResidentialEarthquake



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.4090.402-0.0140.5390.5140.5430.0050.5370.5320.493
Percentage of PercentageOfGrossWrittenPremiums40.940.20.053.951.454.30.053.753.249.3

plmr:SpecialtyHomeowners



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.1380.138-0.010.1290.1480.1440.0450.1780.2030.195
Percentage of PercentageOfGrossWrittenPremiums13.813.80.012.914.814.40.017.820.319.5

us-gaap:ServiceOther



Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.0310.0750.0030.0260.007
Percentage of PercentageOfGrossWrittenPremiums3.17.50.02.60.7

us-gaap:StatementGeographical

plmr:OtherStates



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.120.1340.0040.0850.0960.0970.0010.0650.0840.092
Percentage of PercentageOfGrossWrittenPremiums12.013.40.08.59.69.70.06.58.49.2

stpr:AL



Period End2020-03-312019-03-31
Value0.0210.019
Percentage of PercentageOfGrossWrittenPremiums2.11.9

stpr:CA



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.4590.4580.0060.5550.5540.5640.0080.520.5280.521
Percentage of PercentageOfGrossWrittenPremiums45.945.80.055.555.456.40.052.052.852.1

stpr:HI



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0460.043-0.0020.0550.050.039-0.0030.0650.0540.044
Percentage of PercentageOfGrossWrittenPremiums4.64.30.05.55.03.90.06.55.44.4

stpr:MS



Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-30
Value0.02400.020.0210.0010.016
Percentage of PercentageOfGrossWrittenPremiums2.40.02.02.10.01.6

stpr:NC



Period End2020-06-302020-03-312019-06-302019-03-31
Value0.0310.0240.0160.014
Percentage of PercentageOfGrossWrittenPremiums3.12.41.61.4

stpr:OR



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0270.029-0.0010.0330.0290.027-0.0010.0380.0360.031
Percentage of PercentageOfGrossWrittenPremiums2.72.90.03.32.92.70.03.83.63.1

stpr:SC



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0320.03400.0190.0290.03100.0170.0220.025
Percentage of PercentageOfGrossWrittenPremiums3.23.40.01.92.93.10.01.72.22.5

stpr:TX



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.2240.221-0.0080.170.1880.193-0.0070.2080.2180.226
Percentage of PercentageOfGrossWrittenPremiums22.422.10.017.018.819.30.020.821.822.6

stpr:WA



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0370.0360.0020.0440.0330.030.0030.0430.0280.03
Percentage of PercentageOfGrossWrittenPremiums3.73.60.04.43.33.00.04.32.83.0

plmr:ProceedsFromIssuanceOfCommonStockNetOfUnderwriterDiscountsCommissionsAndEstimatedOfferingExpenses



Period End2020-06-26
Value90
Percentage of ProceedsFromIssuanceOfCommonStockNetOfUnderwriterDiscountsCommissionsAndEstimatedOfferingExpenses100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.4650.4420.4260.410.30622
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.4650.4420.4260.410.30622
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition100.0100.0100.0100.0100.0100.0

us-gaap:AllocatedShareBasedCompensationExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.4640.4420.4260.410.306220.00.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.00.00.0

us-gaap:CededPremiumsWritten



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value30292928242621202613
Percentage of CededPremiumsWritten100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndEquitySecuritiesGainLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value778000.0440000.01178000.0361000.0493000.02411000.0-3538000.01336000.0255000.0-621000.0
Percentage of DebtAndEquitySecuritiesGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndEquitySecuritiesRealizedGainLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value129000.015000.01479000.016000.050000.0-112000.07570000.0-302000.0-3348000.0-453000.0
Percentage of DebtAndEquitySecuritiesRealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value175000.015000.01270000.038000.053000.044000.0-1000.011000.009000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedGain100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss



Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value44000.014000.01000.03000.066000.0161000.0102000.0113000.042000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.210.2100.210.210.21
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate100.0100.00.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiRealizedLoss



Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2000.0-110000.021000.00156000.0-3866000.0229000.03621000.0446000.0
Percentage of EquitySecuritiesFvNiRealizedLoss100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value649000.0425000.0-301000.0345000.0443000.02523000.0-11108000.01638000.03603000.0-168000.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInUnearnedPremiumsNet



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-14289000.0-7193000.0-12820000.0-10520000.0-10506000.0-9575000.0-4177000.0-3194000.07611000.0-2284000.0
Percentage of IncreaseDecreaseInUnearnedPremiumsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncurredClaimsPropertyCasualtyAndLiability



Period End2020-06-302019-06-30
Value3978000.0643000.0
Percentage of IncurredClaimsPropertyCasualtyAndLiability100.0100.0

us-gaap:InvestmentIncomeDividend



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value120000.0125000.0125000.0132000.0137000.030000.0149000.0118000.0126000.0122000.0
Percentage of InvestmentIncomeDividend100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest



Period End2020-06-302020-03-312019-06-302019-03-312018-06-302018-03-31
Value2092000.02001000.01452000.01010000.0689000.0578000.0
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInvestmentExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value98000.091000.076000.081000.0106000.080000.075000.069000.086000.083000.0
Percentage of InvestmentIncomeInvestmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeNet



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2114000.02035000.01803000.01729000.01483000.0960000.01027000.0865000.0729000.0617000.0
Percentage of InvestmentIncomeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1171000.0351000.01135000.0641000.0298000.0106000.02753000.0392000.0706000.0558000.0
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value219000.0883000.0105000.0312000.01249000.02043000.0-5000.0459000.0622000.01057000.0
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.9781.8632.1952.4390.6430.316-0.7695.3740.7320.938
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13645000.0-7368000.0-1535000.01646000.03812000.02632000.0804000.0-407000.0-205000.0-932000.0
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10780000.0-5821000.0-1213000.0897000.03354000.02173000.0833000.0-388000.0-183000.0-926000.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10-5.833-1.210.9743.2982.1870.958-0.309-0.091-0.899
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2865000.0-1547000.0-322000.0749000.0458000.0459000.0-29000.0-19000.0-22000.0-6000.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10676000.0-5833000.0-1210000.0974000.03298000.02187000.0958000.0-309000.0-91000.0-899000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10676000.0-5833000.0-1210000.0974000.03298000.02187000.0958000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10676000.0-5833000.0-1210000.0974000.03298000.02187000.0958000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherUnderwritingExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8.9767.9516.9518.337.165284.8384.9764.3393.805
Percentage of OtherUnderwritingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForLossesAndLossAdjustmentExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.391.2341.240.9531.5472.1492.7480.8511.3281.615
Percentage of PaymentsForLossesAndLossAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt



Period End2020-06-302020-03-312019-06-302019-03-31
Value597112314
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0

us-gaap:PaymentsToAcquireMarketableSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value270.1230.123370.133212.7987.979211.495
Percentage of PaymentsToAcquireMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsWrittenGross



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value83717366585443393734
Percentage of PremiumsWrittenGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

plmr:CommercialAllRisk



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value14127.3388.4028.0857.565-0.5984.8564.3822.936
Percentage of PremiumsWrittenGross17.717.410.012.713.914.0-1.412.111.78.6

plmr:CommercialEarthquake



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1110167.0777.2886.532113.3922.9825.83
Percentage of PremiumsWrittenGross14.115.222.910.712.512.126.48.58.017.1

plmr:FloodInsuranceProduct



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.0321.5261.7221.451.2710.7720.7170.5330.5150.376
Percentage of PremiumsWrittenGross2.42.12.32.22.21.41.61.31.41.1

plmr:HawaiiHurricane



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.2422.6952.7163.2992.6752.0741.9982.6142.0121.504
Percentage of PremiumsWrittenGross3.93.83.75.04.63.84.66.55.44.4

plmr:InlandMarine



Period End2020-06-302019-06-30
Value3.4510.229
Percentage of PremiumsWrittenGross4.10.4

plmr:ResidentialEarthquake



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value34283535292923211916
Percentage of PremiumsWrittenGross40.940.248.453.951.454.254.153.753.249.2

plmr:SpecialtyHomeowners



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value119.8457.7948.5728.6467.786.3497.1167.5796.636
Percentage of PremiumsWrittenGross13.813.810.612.914.814.414.617.820.319.5

us-gaap:ServiceOther



Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value2.6155.3681.4921.7310.394
Percentage of PremiumsWrittenGross3.17.52.02.60.7

us-gaap:StatementGeographical

plmr:OtherStates



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value109.5746.9475.6345.6325.2833.1792.6173.1343.164
Percentage of PremiumsWrittenGross12.013.49.58.59.79.87.36.58.49.3

stpr:AL



Period End2020-03-312019-03-31
Value1.5291.01
Percentage of PremiumsWrittenGross2.11.9

stpr:CA



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value38324236323023201917
Percentage of PremiumsWrittenGross45.845.857.555.555.456.454.952.052.852.1

stpr:HI



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.843.0523.1633.6752.9212.0911.9982.6142.0121.504
Percentage of PremiumsWrittenGross4.64.34.35.55.03.94.66.55.44.4

stpr:MS



Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-30
Value2.0341.3861.3151.2220.8190.629
Percentage of PremiumsWrittenGross2.41.92.02.11.91.6

stpr:NC



Period End2020-06-302020-03-312019-06-302019-03-31
Value2.6091.6840.9470.74
Percentage of PremiumsWrittenGross3.12.41.61.4

stpr:OR



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.2892.0972.1172.1531.6711.4561.3851.5061.3431.052
Percentage of PremiumsWrittenGross2.72.92.93.32.92.73.23.83.63.1

stpr:SC



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.7042.411.5711.2581.6861.6690.8720.690.8030.843
Percentage of PremiumsWrittenGross3.23.42.11.92.93.12.01.72.22.5

stpr:TX



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1815111111108.4048.3188.1597.687
Percentage of PremiumsWrittenGross22.422.115.617.018.919.319.320.821.822.6

stpr:WA



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.0552.6063.1772.911.9261.5941.861.7311.0551.012
Percentage of PremiumsWrittenGross3.63.64.34.43.33.04.34.32.83.0

us-gaap:PremiumsWrittenNet



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value53414338332721191020
Percentage of PremiumsWrittenNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities



Period End2020-06-302020-03-312019-06-302019-03-312018-06-302018-03-31
Value637.7446121613
Percentage of ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt



Period End2020-06-302020-03-312019-06-302019-03-31
Value100.84.49.9
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value132000.015000.0-3000.0-97000.071000.0-18000.0-154000.0-99000.0-113000.0-33000.0
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value104000.012000.0-3000.0-77000.056000.0-14000.0-125000.0-79000.0-92000.0-27000.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value28000.03000.00-20000.015000.0-4000.0-29000.0-20000.0-21000.0-6000.0
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PlanName

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

plmr:EmployeeStockPurchasePlan2019



Period End2020-06-302020-03-31
Value021111.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans0.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-06-302020-03-31
Value021111.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans0.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-30
Value750000.000
Percentage of StockIssuedDuringPeriodSharesNewIssues100.00.00.0

us-gaap:SubsidiarySaleOfStock

plmr:SecondaryOffering



Period End2020-06-26
Value1150000.0
Percentage of StockIssuedDuringPeriodSharesNewIssues0.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan



Period End2020-06-302020-03-31
Value0416000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan0.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-06-302020-03-31
Value0416000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan0.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.8852.1792.1142.6470.7350.278-0.285.2580.7512.436
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value90000.0-316000.081000.0-208000.0-92000.038000.0-489000.0116000.0-19000.0-1498000.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment



Period End2020-06-302019-06-30
Value713600.0129050.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

plmr:CashCashEquivalentsAndRestrictedCashFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10914281614109.924
Percentage of CashCashEquivalentsAndRestrictedCashFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-31
Value9.4354.999
Percentage of CashCashEquivalentsAndRestrictedCashFairValueDisclosure64.117.6

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10924331614109.924
Percentage of CashCashEquivalentsAndRestrictedCashFairValueDisclosure100.0164.1117.6100.0100.0100.0100.0

us-gaap:AccountsPayableAndOtherAccruedLiabilities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value101013159.7328.3619.245
Percentage of AccountsPayableAndOtherAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedInvestmentIncomeReceivable



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2014000.01774000.01386000.01363000.01310000.0856000.0734000.0
Percentage of AccruedInvestmentIncomeReceivable100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value147372839373235
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value282282242223208126122
Percentage of AssetsFairValueDisclosure191.6750.8857.1571.0558.6388.6348.3

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-31
Value0.51.5
Percentage of AssetsFairValueDisclosure1.35.3

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value430320272263245159157
Percentage of AssetsFairValueDisclosure291.6852.1962.4671.0658.6488.6448.3

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value136.4655.997.4185.6762.2010.536
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8.8283.2964.3265.0513.7841.3680.192
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax63.251.072.268.166.762.235.8

plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.1020.0450.0290.0330.014
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.70.70.50.40.2

plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.9860.6860.3430.6140.470.220.115
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax7.110.65.78.38.310.021.5

plmr:StatesTerritoriesPossessionsDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-30
Value0.3530.2080.1470.169
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax2.53.22.52.3

us-gaap:AssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.8081.3030.8241.090.90.3590.133
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax20.120.213.814.715.916.324.8

us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.8960.9270.3210.4610.3920.1950.096
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax6.414.35.46.26.98.917.9

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1970000.07971000.0117000.055000.052000.0306000.01265000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1183000.05503000.039000.031000.032000.0199000.0951000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax60.169.033.356.461.565.075.2

plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-03-312019-06-302019-03-312018-12-31
Value16000.01000.05000.010000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.21.91.60.8

plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value181000.0229000.046000.03000.04000.027000.091000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax9.22.939.35.57.78.87.2

us-gaap:AssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value606000.02223000.019000.014000.03000.016000.081000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax30.827.916.225.55.85.26.4

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value270274211216202125122
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1511671241231177065
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis55.860.959.057.258.156.553.6

plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.2952.3041.9131.9221.930.8180.825
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.80.80.90.91.00.70.7

plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value28261817151112
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis10.49.88.68.27.69.110.1

plmr:StatesTerritoriesPossessionsDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302018-12-31
Value2.8332.8362.2982.31.227
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.01.01.11.11.0

us-gaap:AssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value71585057512727
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis26.321.424.126.625.622.122.2

us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value15161313131215
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis5.66.06.36.06.69.912.4

us-gaap:AvailableForSaleSecuritiesDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value282273217223208126122
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-06-302019-12-31
Value158129
Percentage of AvailableForSaleSecuritiesDebtSecurities56.159.4

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-06-302019-12-31
Value2.3971.942
Percentage of AvailableForSaleSecuritiesDebtSecurities0.80.9

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-06-302019-12-31
Value2818
Percentage of AvailableForSaleSecuritiesDebtSecurities10.28.5

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, plmr:StatesTerritoriesPossessionsDebtSecurities



Period End2020-06-302019-12-31
Value3.1862.445
Percentage of AvailableForSaleSecuritiesDebtSecurities1.11.1

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities



Period End2020-06-302019-12-31
Value7350
Percentage of AvailableForSaleSecuritiesDebtSecurities26.023.1

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-06-302019-12-31
Value1613
Percentage of AvailableForSaleSecuritiesDebtSecurities5.76.3

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities



Period End2020-06-302019-12-31
Value0.01.5
Percentage of AvailableForSaleSecuritiesDebtSecurities0.00.7

us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-06-302019-12-31
Value158129
Percentage of AvailableForSaleSecuritiesDebtSecurities56.159.4

us-gaap:FairValueMeasurementsRecurring, plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-06-302019-12-31
Value2.3971.942
Percentage of AvailableForSaleSecuritiesDebtSecurities0.80.9

us-gaap:FairValueMeasurementsRecurring, plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-06-302019-12-31
Value2818
Percentage of AvailableForSaleSecuritiesDebtSecurities10.28.5

us-gaap:FairValueMeasurementsRecurring, plmr:StatesTerritoriesPossessionsDebtSecurities



Period End2020-06-302019-12-31
Value3.1862.445
Percentage of AvailableForSaleSecuritiesDebtSecurities1.11.1

us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities



Period End2020-06-302019-12-31
Value7351
Percentage of AvailableForSaleSecuritiesDebtSecurities26.023.8

us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-06-302019-12-31
Value1613
Percentage of AvailableForSaleSecuritiesDebtSecurities5.76.3

us-gaap:FinancialInstrument

plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1581651291281217165
Percentage of AvailableForSaleSecuritiesDebtSecurities56.160.459.457.558.456.653.3

plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.3972.3331.9421.9551.9430.8130.815
Percentage of AvailableForSaleSecuritiesDebtSecurities0.80.90.90.90.90.60.7

plmr:SecuritiesOnDepositWithStateRegulatoryAuthorities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5.95.45.15.15.05.05.0
Percentage of AvailableForSaleSecuritiesDebtSecurities2.12.02.32.32.43.94.1

plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value28271818151112
Percentage of AvailableForSaleSecuritiesDebtSecurities10.210.08.58.27.69.110.2

plmr:StatesTerritoriesPossessionsDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302018-12-31
Value3.1863.0442.4452.4691.221
Percentage of AvailableForSaleSecuritiesDebtSecurities1.11.11.11.11.0

us-gaap:AssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value73575158522727
Percentage of AvailableForSaleSecuritiesDebtSecurities26.021.223.826.225.422.022.4

us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value16171313131215
Percentage of AvailableForSaleSecuritiesDebtSecurities5.76.46.36.06.69.812.5

us-gaap:CededPremiumsPayable



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10101111169.66410
Percentage of CededPremiumsPayable100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentFaceAmount



Period End2020-06-30
Value1.3
Percentage of DebtInstrumentFaceAmount100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3910518110.9083.5941
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value17706.9293.9360.3982.72330
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months42.967.137.033.443.875.873.0

plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-03-312019-09-302018-12-31
Value0.3850.5460.264
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months0.44.60.6

plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302018-12-31
Value5.5928.853.5480.5691.706
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months14.08.418.94.84.1

us-gaap:AssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value17257.0355.2610.510.8676.653
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months43.124.237.544.656.224.215.9

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1970000.07971000.0114000.036000.02000.027000.0640000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1183000.05503000.038000.022000.02000.022000.0556000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss60.169.033.361.1100.081.586.9

plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-03-312018-12-31
Value16000.01000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss0.20.2

plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302018-12-31
Value181000.0229000.046000.01000.014000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss9.22.940.42.82.2

us-gaap:AssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-03-312018-12-31
Value606000.02223000.019000.013000.05000.039000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss30.827.916.736.118.56.1

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value391052018153673
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value17707.1177.3938.5952245
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition42.967.134.040.354.261.861.6

plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-03-312019-09-302019-06-302019-03-312018-12-31
Value0.3850.5460.550.5490.814
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition0.43.03.51.51.1

plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5.5928.853.5481.5661.4445.2377.622
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition14.08.416.98.59.114.210.3

us-gaap:AssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value17257.2175.5241.9642.56310
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition43.124.234.530.112.47.014.2

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1970000.07971000.0117000.055000.052000.0306000.01265000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1183000.05503000.039000.031000.032000.0199000.0951000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss60.169.033.356.461.565.075.2

plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-03-312019-06-302019-03-312018-12-31
Value16000.01000.05000.010000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss0.21.91.60.8

plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value181000.0229000.046000.03000.04000.027000.091000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss9.22.939.35.57.78.87.2

us-gaap:AssetBackedSecurities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value606000.02223000.019000.014000.03000.016000.081000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss30.827.916.225.55.85.26.4

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value85.0223.051.039.042.091.0173.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredPolicyAcquisitionCosts



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value302625211916141510
Percentage of DeferredPolicyAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiCost



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value35212121212127
Percentage of EquitySecuritiesFvNiCost100.0100.0100.0100.0100.0100.0100.0

us-gaap:FundsHeldUnderReinsuranceAgreementsLiability



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2420000.02069000.01658000.01801000.01729000.0750000.0720000.0
Percentage of FundsHeldUnderReinsuranceAgreementsLiability100.0100.0100.0100.0100.0100.0100.0

us-gaap:Investments



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value320296239246230148147
Percentage of Investments100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:InvestmentsFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1651291281217165
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.3331.9421.9551.9430.8130.815
Percentage of InvestmentsFairValueDisclosure1.41.51.51.61.11.3

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value271818151112
Percentage of InvestmentsFairValueDisclosure16.614.314.313.016.119.1

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, plmr:StatesTerritoriesPossessionsDebtSecurities



Period End2020-03-312019-12-312019-09-302018-12-31
Value3.0442.4452.4691.221
Percentage of InvestmentsFairValueDisclosure1.81.91.91.9

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value575058522727
Percentage of InvestmentsFairValueDisclosure34.838.945.643.538.942.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value171313131215
Percentage of InvestmentsFairValueDisclosure10.610.610.511.317.423.4

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-31
Value0.51.5
Percentage of InvestmentsFairValueDisclosure0.31.2

us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, plmr:IndustrialAndMiscellaneousDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1651291281217165
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementsRecurring, plmr:PoliticalSubdivisionsDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.3331.9421.9551.9430.8130.815
Percentage of InvestmentsFairValueDisclosure1.41.51.51.61.11.3

us-gaap:FairValueMeasurementsRecurring, plmr:SpecialRevenueExcludingAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value271818151112
Percentage of InvestmentsFairValueDisclosure16.614.314.313.016.119.1

us-gaap:FairValueMeasurementsRecurring, plmr:StatesTerritoriesPossessionsDebtSecurities



Period End2020-03-312019-12-312019-09-302018-12-31
Value3.0442.4452.4691.221
Percentage of InvestmentsFairValueDisclosure1.81.91.91.9

us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value575158522727
Percentage of InvestmentsFairValueDisclosure35.140.045.643.538.942.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentAgenciesDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value171313131215
Percentage of InvestmentsFairValueDisclosure10.610.610.511.317.423.4

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2418161614121618141417
Percentage of LiabilityForClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value7087000.04498000.03869000.02914000.01428000.02332000.04165000.07682000.03159000.03755000.04432000.03336000.0
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PreferredStockSharesAuthorized



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5000000.05000000.05000000.05000000.05000000.05000000.00
Percentage of PreferredStockSharesAuthorized100.0100.0100.0100.0100.0100.00.0

us-gaap:PremiumsReceivableAtCarryingValue



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value44343632332418
Percentage of PremiumsReceivableAtCarryingValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidExpenseAndOtherAssets



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value261314109.1278.2645.863
Percentage of PrepaidExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidReinsurancePremiums



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value24252624222118
Percentage of PrepaidReinsurancePremiums100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1713121413101110111013
Percentage of ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReinsuranceRecoverablesOnPaidLosses



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7549000.05168000.04303000.03700000.03427000.02094000.02666000.0
Percentage of ReinsuranceRecoverablesOnPaidLosses100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCash



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value619000.0314000.0230000.0425000.0476000.0397000.0399000.0
Percentage of RestrictedCash100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:RestrictedStockUnitsRSU



Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.0017950.0061910.0060660.0060660.006066
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU



Period End2020-06-302020-03-312019-12-31
Value73.617.3216.49
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0

us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

plmr:EmployeeStockPurchasePlan2019



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-04-16
Value458890.0458890.0240000.0240000.0240000.0240000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized100.0100.0100.0100.0100.0100.0

plmr:EquityIncentivePlan2019



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-04-16
Value2014900.02045800.01347600.01408700.01408700.02400000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized439.1445.8561.5587.0587.01000.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:EmployeeStockOption



Period End2020-06-302020-03-312019-12-31
Value674335
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0

us-gaap:SubsidiarySaleOfStock

us-gaap:SharePrice

plmr:SecondaryOffering



Period End2020-06-262020-01-09
Value82.049.0
Percentage of SharePrice100.0100.0

us-gaap:TaxesPayableCurrentAndNoncurrent



Period End2020-06-302020-03-312019-12-31
Value6620000.03917000.01117000.0
Percentage of TaxesPayableCurrentAndNoncurrent100.0100.0100.0

us-gaap:UnearnedPremiums



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1501371301161039279
Percentage of UnearnedPremiums100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept


us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)