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| 2023-12-31 | 2023-09-30 | 2023-06-30 | 2023-03-31 | 2022-12-31 | 2022-09-30 | 2022-06-30 | 2022-03-31 | 2021-12-31 | 2021-09-30 | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Common Stock Value | 0.28 | 0.28 | 0.28 | 0.28 | 0.27 | 0.27 | 0.27 | 0.27 | 0.26 | 0.24 | 0.24 | 0.24 | 0.23 | 0.23 | 0.23 | 0.23 | 0.22 | 0.22 | 0.22 | 0.21 | 0.20 | 0.20 | 0.20 | 0.18 | 0.18 | 0.18 | 0.18 | 0.18 | 0.18 | NA | NA | NA | |
| Earnings Per Share Basic | 0.22 | -0.03 | -0.17 | -0.36 | -0.50 | -0.91 | -0.72 | -0.56 | -0.63 | -0.23 | 1.92 | 0.24 | -1.55 | -0.72 | -0.24 | -0.66 | -0.86 | -0.78 | NA | -1.11 | -1.64 | -0.71 | -0.71 | -1.64 | 1.65 | -1.17 | -1.93 | -0.42 | NA | NA | NA | -0.68 | |
| Earnings Per Share Diluted | 0.22 | -0.03 | -0.17 | -0.36 | -0.50 | -0.91 | -0.72 | -0.56 | -0.62 | -0.23 | 1.79 | 0.24 | -1.55 | -0.72 | -0.24 | NA | -0.86 | -0.78 | NA | NA | -1.64 | -0.71 | -0.71 | 17571490.00 | 1.20 | -1.25 | -1.93 | -0.42 | NA | -1.58 | NA | -0.68 |
| 2023-12-31 | 2023-09-30 | 2023-06-30 | 2023-03-31 | 2022-12-31 | 2022-09-30 | 2022-06-30 | 2022-03-31 | 2021-12-31 | 2021-09-30 | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenue From Contract With Customer Including Assessed Tax | 77.07 | 75.57 | 66.89 | 59.97 | 57.93 | 59.79 | 54.02 | 45.59 | 47.97 | 43.66 | 42.80 | 36.51 | 36.04 | 45.70 | 41.88 | 41.74 | 49.07 | 54.70 | 64.34 | 56.25 | 51.72 | 70.25 | 60.70 | 51.72 | 34.30 | 47.81 | 42.32 | 34.30 | 44.36 | 54.12 | 57.27 | 59.88 | |
| Revenues | 77.07 | 75.57 | 66.89 | 59.97 | 57.93 | 59.79 | 54.02 | 45.59 | 47.97 | 43.66 | 42.80 | 36.51 | 36.04 | 45.70 | 41.88 | 41.74 | 49.07 | 54.70 | 64.34 | 56.25 | 51.72 | 70.25 | 60.70 | 51.72 | 49.34 | 47.81 | 42.32 | 34.30 | 44.36 | 54.12 | 57.27 | 59.88 | |
| Gross Profit | 29.81 | 36.76 | 30.59 | 22.70 | 13.59 | 15.79 | 9.87 | 6.09 | 12.93 | 10.21 | 10.18 | 10.21 | -0.96 | 16.57 | 17.96 | 17.12 | 23.09 | 27.49 | 20.82 | 11.97 | 28.77 | 21.66 | 14.72 | 13.37 | 11.69 | 9.39 | 1.53 | 4.52 | NA | NA | NA | NA | |
| Operating Costs And Expenses | 47.26 | 38.82 | 36.30 | 37.27 | 44.34 | 44.01 | 44.15 | 39.50 | 35.04 | 33.45 | 32.62 | 26.31 | 13.48 | 29.13 | 23.91 | 24.62 | 25.98 | 27.21 | 43.52 | 44.28 | 45.15 | 51.42 | 48.82 | 41.17 | 40.48 | 41.26 | 44.48 | 33.38 | 32.67 | 41.16 | 44.24 | 48.85 | |
| Costs And Expenses | 72.51 | 65.23 | 64.28 | 63.39 | 69.39 | 68.91 | 69.57 | 64.85 | 62.64 | 58.00 | 57.09 | 50.79 | 29.67 | 57.29 | 55.14 | 53.79 | 53.49 | 59.98 | 76.97 | 77.62 | 74.38 | 81.00 | 82.76 | 73.49 | 72.87 | 67.20 | 80.82 | 57.71 | 60.83 | 65.96 | 71.43 | 76.09 | |
| General And Administrative Expense | 11.55 | 12.30 | 13.70 | 11.63 | 10.80 | 9.98 | 10.21 | 9.92 | 10.74 | 9.13 | 9.15 | 8.61 | 4.57 | 10.15 | 14.56 | 10.77 | 8.58 | 12.51 | 11.64 | 12.00 | 12.24 | 12.23 | 15.53 | 12.81 | 12.37 | 10.32 | 21.70 | 11.83 | 14.39 | 10.59 | 11.93 | 12.40 | |
| Operating Income Loss | 22.62 | 9.83 | 2.88 | 0.18 | -10.45 | -10.90 | -15.53 | -17.12 | -14.67 | -14.28 | 8.36 | -16.55 | -16.91 | -11.36 | -16.72 | -24.62 | -10.50 | -4.42 | -16.48 | -21.01 | -24.41 | -10.16 | -21.00 | -24.41 | -35.83 | -29.13 | -44.81 | -18.59 | -82.72 | -41.07 | -34.51 | -16.59 | |
| Interest Expense | 10.44 | 9.54 | 8.74 | 8.79 | 8.46 | 7.63 | 6.99 | 6.63 | 6.38 | 6.40 | 7.31 | 8.02 | 7.46 | 8.60 | 7.00 | 7.64 | 7.40 | 7.36 | 7.69 | 7.74 | 7.49 | 7.76 | 6.49 | 6.13 | 4.51 | 4.29 | 4.55 | 3.18 | 2.55 | 2.51 | 2.58 | 2.36 | |
| Interest Paid Net | 10.40 | 6.75 | 8.34 | 5.96 | 10.96 | 3.94 | 7.24 | 3.10 | 8.91 | 3.49 | 7.35 | 4.40 | 6.59 | 4.88 | 5.99 | 4.51 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| Gains Losses On Extinguishment Of Debt | 0.00 | -2.00 | NA | NA | NA | NA | NA | NA | 0.00 | 0.00 | 61.99 | NA | NA | NA | NA | NA | NA | NA | NA | NA | 0.00 | -0.64 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments | 11.73 | -0.80 | -6.04 | -8.97 | -10.30 | -15.68 | -21.17 | -22.93 | -21.35 | -10.87 | 62.55 | -23.70 | -27.65 | -20.76 | -23.28 | -26.42 | -15.66 | -8.80 | -26.31 | -28.71 | -6.14 | -13.49 | -30.63 | -41.72 | -32.83 | -20.87 | -51.86 | -11.46 | -83.46 | -44.06 | -41.22 | -21.57 | |
| Income Tax Expense Benefit | 6.38 | 2.36 | -1.10 | 1.16 | 4.22 | 8.42 | -1.63 | -2.42 | -1.01 | -0.72 | 15.91 | -2.69 | 1.94 | -3.12 | -15.08 | -6.67 | -2.31 | 1.28 | -3.05 | -3.83 | -0.05 | 1.25 | -4.72 | -9.82 | -51.36 | -5.82 | -13.80 | -3.42 | -27.64 | -15.26 | -13.74 | -6.83 | |
| Income Taxes Paid Net | -4.69 | 1.17 | 0.11 | 0.45 | -0.00 | -0.00 | NA | NA | 0.00 | 1.36 | 19.34 | 12.06 | 0.64 | 0.26 | -1.38 | 1.57 | 0.00 | -0.04 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| Profit Loss | 5.73 | -0.88 | -4.57 | -9.59 | -13.34 | -24.35 | -19.12 | -14.84 | -15.85 | -5.83 | 48.80 | 6.01 | -38.85 | -18.08 | -6.07 | -19.99 | -21.92 | -18.24 | -30.26 | -28.27 | -31.69 | -15.77 | -26.63 | -31.69 | 27.90 | -22.36 | -36.49 | -7.60 | -61.77 | -28.01 | -30.79 | -12.58 | |
| Other Comprehensive Income Loss Net Of Tax | 1.32 | -1.88 | 0.77 | 0.52 | 2.30 | -1.41 | -2.89 | 0.80 | 1.01 | -0.06 | -0.34 | 4.66 | 3.17 | 2.16 | 0.43 | -4.52 | 22.65 | -1.95 | -2.34 | -0.02 | -2.89 | -0.83 | -2.81 | 2.15 | -3.79 | 1.06 | 1.09 | 0.76 | -0.56 | -0.51 | -3.30 | -1.97 | |
| Net Income Loss | 5.73 | -0.88 | -4.57 | -9.59 | -13.34 | -24.35 | -19.12 | -14.84 | -15.85 | -5.83 | 48.80 | 6.01 | -38.82 | -18.08 | -6.07 | -15.95 | -20.45 | -18.45 | -28.39 | -25.55 | -28.83 | -15.96 | -25.02 | -28.83 | 28.96 | -20.48 | -33.99 | -7.39 | -61.58 | -27.93 | -30.58 | -11.96 | |
| Comprehensive Income Net Of Tax | 7.05 | -2.76 | -3.81 | -9.07 | -11.04 | -25.76 | -22.01 | -14.04 | -14.84 | -5.89 | 48.46 | 10.67 | -35.65 | -15.92 | -5.64 | -20.46 | 2.20 | -20.39 | -30.73 | -25.57 | -10.64 | -16.77 | -27.73 | -26.76 | 25.15 | -19.47 | -33.00 | -6.74 | -61.89 | -28.29 | -33.36 | -13.75 |
| 2023-12-31 | 2023-09-30 | 2023-06-30 | 2023-03-31 | 2022-12-31 | 2022-09-30 | 2022-06-30 | 2022-03-31 | 2021-12-31 | 2021-09-30 | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Assets | 780.34 | 780.33 | 784.20 | 803.55 | 815.63 | 842.99 | 877.11 | 902.63 | 912.50 | 902.06 | 919.18 | 973.82 | 1017.66 | 1057.17 | 1052.10 | 966.53 | 1009.19 | 1040.51 | 1076.70 | 1112.35 | 1102.93 | 1155.48 | 1132.54 | 1117.38 | 1008.50 | 1049.93 | 1092.26 | 1095.82 | 1015.12 | NA | NA | NA | |
| Liabilities | 406.11 | 414.69 | 417.34 | 434.51 | 436.48 | 454.02 | 463.61 | 469.59 | 465.96 | 447.26 | 459.78 | 564.66 | 615.83 | 620.52 | 600.74 | 511.22 | 530.27 | 546.36 | 565.46 | 570.23 | 548.00 | 590.59 | 551.72 | 614.21 | 485.34 | 551.92 | 573.23 | 535.14 | 464.96 | NA | NA | NA | |
| Liabilities And Stockholders Equity | 780.34 | 780.33 | 784.20 | 803.55 | 815.63 | 842.99 | 877.11 | 902.63 | 912.50 | 902.06 | 919.18 | 973.82 | 1017.66 | 1057.17 | 1052.10 | 966.53 | 1009.19 | 1040.51 | 1076.70 | 1112.35 | 1102.93 | 1155.48 | 1132.54 | 1117.38 | 1008.50 | 1049.93 | 1092.26 | 1095.82 | 1015.12 | NA | NA | NA | |
| Stockholders Equity | 373.90 | 365.32 | 366.53 | 368.72 | 378.82 | 388.65 | 413.18 | 432.72 | 446.22 | 454.48 | 459.08 | 408.84 | 401.52 | 436.30 | 451.02 | 454.97 | 457.49 | 471.25 | 488.55 | 517.56 | 525.53 | 535.26 | 551.36 | 472.00 | 508.19 | 481.99 | 501.19 | 537.87 | 544.61 | NA | NA | NA |
| 2023-12-31 | 2023-09-30 | 2023-06-30 | 2023-03-31 | 2022-12-31 | 2022-09-30 | 2022-06-30 | 2022-03-31 | 2021-12-31 | 2021-09-30 | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Assets Current | 164.69 | 142.04 | 126.07 | 131.56 | 132.58 | 148.87 | 95.81 | 104.21 | 108.78 | 114.88 | 116.98 | 149.86 | 178.70 | 156.13 | 149.32 | 152.87 | 158.55 | 125.64 | 147.66 | 151.81 | 179.03 | 202.76 | 169.64 | 135.34 | 177.29 | 202.19 | 216.00 | 253.04 | 250.56 | NA | NA | NA | |
| Cash | 67.45 | NA | NA | NA | 39.96 | NA | NA | NA | 37.62 | NA | NA | NA | 32.67 | NA | NA | NA | 83.94 | NA | NA | NA | 95.19 | NA | NA | NA | 110.23 | NA | NA | NA | 117.31 | NA | NA | NA | |
| Cash And Cash Equivalents At Carrying Value | 67.45 | 55.84 | 40.75 | 40.57 | 39.96 | 47.51 | 22.61 | 36.31 | 37.62 | 42.19 | 45.45 | 68.41 | 32.67 | 45.18 | 54.70 | 69.22 | 83.94 | 38.16 | 58.77 | 63.85 | 95.19 | 102.86 | 86.24 | 62.74 | 110.23 | 130.36 | 150.96 | 184.21 | 117.31 | 132.48 | 166.13 | 124.00 | |
| Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents | 84.13 | NA | NA | NA | 43.05 | 71.30 | 45.30 | 39.90 | 41.22 | NA | NA | NA | 36.02 | NA | NA | NA | 87.05 | NA | NA | NA | 96.85 | NA | NA | NA | 112.55 | NA | NA | NA | 118.77 | NA | NA | NA | |
| Accounts Receivable Net Current | 63.73 | 63.25 | 60.02 | 60.11 | 54.39 | 58.57 | 55.28 | 49.24 | 55.54 | 50.34 | 47.08 | 42.68 | 45.33 | 54.94 | 57.89 | 48.19 | 49.13 | 58.95 | 69.12 | 67.90 | 64.12 | 75.35 | 57.66 | 45.66 | 45.62 | 54.12 | 43.48 | 48.04 | 44.83 | NA | NA | NA | |
| Inventory Net | 1.61 | 1.74 | 1.65 | 2.21 | 2.12 | 2.06 | 1.72 | 1.30 | 0.93 | 0.48 | 0.42 | 0.57 | 0.58 | 0.57 | 1.41 | 1.57 | 1.23 | 1.41 | 3.00 | 4.14 | 3.44 | 3.65 | 3.67 | 3.98 | 3.76 | 3.79 | 3.38 | 3.42 | 3.06 | NA | NA | NA | |
| Prepaid Expense And Other Assets Current | 2.69 | 2.96 | 3.11 | 3.23 | 3.05 | 4.70 | 5.39 | 3.72 | 3.73 | 3.85 | 4.53 | 2.33 | 3.23 | 3.60 | 3.22 | 2.65 | 2.61 | 3.15 | 4.12 | 4.60 | 2.53 | 2.69 | 4.09 | 3.61 | 3.03 | 3.36 | 3.72 | 3.07 | 3.35 | NA | NA | NA |
| 2023-12-31 | 2023-09-30 | 2023-06-30 | 2023-03-31 | 2022-12-31 | 2022-09-30 | 2022-06-30 | 2022-03-31 | 2021-12-31 | 2021-09-30 | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Property Plant And Equipment Gross | 918.82 | 936.52 | 966.34 | 969.33 | 967.68 | 992.42 | 1000.15 | 1006.87 | 1025.28 | 989.91 | 972.27 | 1000.43 | 1012.87 | 1078.17 | 1066.24 | 930.26 | 976.98 | 1070.37 | 1222.82 | 1294.94 | 1242.73 | 1279.00 | 1287.86 | 1320.50 | 1179.84 | 1204.41 | 1155.15 | 1089.18 | 958.76 | 1058.05 | 1098.91 | 1099.06 | |
| Construction In Progress Gross | 10.36 | 9.41 | 8.88 | 8.54 | 8.11 | 8.42 | 15.58 | 15.55 | 15.53 | 15.58 | 32.90 | 32.53 | 32.33 | 56.71 | 55.95 | 55.30 | 74.34 | 70.28 | 68.23 | 63.30 | 88.92 | 82.95 | 82.27 | 80.68 | 70.16 | 60.60 | 90.33 | 83.71 | 123.80 | NA | NA | NA | |
| Accumulated Depreciation Depletion And Amortization Property Plant And Equipment | 324.14 | 318.55 | 334.68 | 324.20 | 310.78 | 321.90 | 325.09 | 316.44 | 317.30 | 303.18 | 288.88 | 297.79 | 291.54 | 334.39 | 322.38 | 312.91 | 358.96 | 400.63 | 525.56 | 579.44 | 561.27 | 568.75 | 564.48 | 580.46 | 560.16 | 558.92 | 543.82 | 534.52 | 540.62 | 552.02 | 556.91 | 557.97 | |
| Property Plant And Equipment Net | 605.04 | 627.38 | 640.54 | 653.67 | 665.02 | 678.95 | 690.63 | 705.98 | 723.52 | 702.31 | 716.29 | 735.17 | 753.66 | 800.49 | 799.82 | 672.65 | 692.36 | 740.02 | 765.49 | 778.80 | 770.38 | 793.20 | 805.65 | 820.72 | 689.83 | 706.09 | 701.67 | 638.36 | 541.94 | NA | NA | NA | |
| Investments In Affiliates Subsidiaries Associates And Joint Ventures | 4.12 | 3.86 | 3.25 | 3.59 | 3.02 | 1.90 | 75.92 | 76.86 | 71.73 | 77.43 | 77.54 | 79.00 | 75.31 | 88.93 | 90.90 | 125.01 | 124.68 | 118.22 | 112.42 | 119.52 | 121.77 | 120.34 | 115.42 | 112.22 | 92.17 | 89.98 | 100.72 | 114.77 | 138.31 | NA | NA | NA | |
| Other Assets Noncurrent | 2.15 | 2.10 | 2.14 | 2.08 | 2.00 | 1.89 | 1.93 | 2.06 | 1.77 | 2.67 | 2.78 | 2.62 | 2.73 | 3.15 | 3.24 | 3.27 | 3.40 | 3.42 | 3.63 | 3.60 | 3.69 | 3.58 | 3.67 | 3.74 | 3.85 | 6.21 | 6.07 | 6.18 | 6.09 | NA | NA | NA |
| 2023-12-31 | 2023-09-30 | 2023-06-30 | 2023-03-31 | 2022-12-31 | 2022-09-30 | 2022-06-30 | 2022-03-31 | 2021-12-31 | 2021-09-30 | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Liabilities Current | 77.09 | 83.97 | 126.67 | 127.55 | 121.42 | 118.28 | 97.39 | 91.54 | 84.67 | 75.14 | 85.66 | 91.22 | 131.80 | 121.49 | 116.10 | 112.48 | 94.82 | 111.40 | 119.78 | 110.71 | 83.62 | 102.14 | 103.85 | 105.36 | 99.22 | 109.22 | 155.56 | 100.88 | 81.02 | NA | NA | NA | |
| Long Term Debt Current | 28.36 | 28.00 | 63.96 | 60.52 | 61.51 | 57.57 | 33.40 | 32.71 | 31.60 | 28.88 | 28.42 | 34.89 | 32.38 | 52.11 | 51.79 | 37.08 | 17.80 | 23.45 | 20.65 | 17.43 | 16.81 | 17.43 | 22.86 | 22.86 | 22.86 | 30.86 | 81.59 | 26.60 | 20.40 | NA | NA | NA | |
| Accounts Payable And Accrued Liabilities Current | 27.56 | 32.47 | 39.01 | 44.26 | 37.95 | 36.25 | 39.26 | 32.59 | 28.42 | 23.58 | 27.16 | 21.43 | 29.97 | 29.54 | 22.38 | 32.02 | 25.69 | 26.51 | 33.91 | 27.26 | 19.37 | 20.48 | 23.77 | 25.55 | 24.02 | 23.49 | 23.44 | 26.40 | 25.97 | NA | NA | NA | |
| Other Liabilities Current | 6.25 | NA | 5.41 | 3.96 | 3.58 | 3.54 | 4.15 | 5.37 | 6.56 | 5.87 | 5.03 | 4.25 | 4.44 | 5.03 | 4.65 | 2.87 | 4.82 | 16.56 | 15.78 | 16.22 | 19.83 | 17.25 | 12.44 | 12.82 | 11.88 | 54.21 | 47.01 | 46.05 | 34.65 | NA | NA | NA | |
| Contract With Customer Liability Current | 0.69 | 1.47 | 3.64 | 1.49 | 2.33 | 0.83 | 1.37 | 0.96 | 1.61 | 2.36 | 4.12 | 4.57 | 4.45 | 3.13 | 4.00 | 3.79 | 5.33 | 3.30 | 3.17 | 3.60 | 1.33 | 9.75 | 10.23 | 9.43 | 10.10 | NA | NA | NA | NA | NA | NA | NA |
| 2023-12-31 | 2023-09-30 | 2023-06-30 | 2023-03-31 | 2022-12-31 | 2022-09-30 | 2022-06-30 | 2022-03-31 | 2021-12-31 | 2021-09-30 | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Long Term Debt Noncurrent | 287.54 | 291.84 | 243.96 | 254.45 | 260.12 | 282.56 | 318.70 | 326.26 | 332.76 | 321.64 | 320.82 | 431.85 | 440.51 | 452.96 | 447.66 | 356.73 | 380.25 | 375.77 | 379.07 | 384.34 | 387.85 | 397.74 | 348.91 | 405.23 | 292.04 | 285.87 | 233.90 | 274.41 | 217.81 | NA | NA | NA | |
| Deferred Finance Costs Noncurrent Net | 4.23 | 4.60 | 4.69 | 4.26 | 4.65 | 3.15 | 2.77 | 2.93 | 3.19 | 3.36 | 3.61 | 3.87 | 4.13 | 4.62 | 4.94 | 5.26 | 5.43 | 5.65 | 5.70 | 5.97 | 6.30 | NA | NA | NA | 5.79 | NA | NA | NA | 6.27 | NA | NA | NA | |
| Deferred Income Tax Liabilities Net | 35.72 | 33.08 | 34.04 | 39.12 | 40.78 | 39.82 | 33.74 | 37.15 | 40.68 | 43.46 | 46.17 | 31.77 | 35.82 | 36.45 | 24.10 | NA | 33.91 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| Minority Interest | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.35 | 0.35 | 0.34 | 21.43 | 22.89 | 22.69 | 24.57 | 29.40 | 29.63 | 29.45 | 31.17 | 14.97 | 16.01 | 17.83 | 22.81 | 5.54 | NA | NA | NA | |
| Other Liabilities Noncurrent | 2.23 | 2.22 | 2.19 | 2.26 | 2.64 | 2.69 | 2.70 | 2.99 | 2.89 | 2.92 | 2.95 | 4.91 | 3.24 | 3.81 | 6.32 | 7.95 | 6.27 | 4.85 | 5.17 | 7.29 | 26.57 | 26.66 | 27.29 | 28.60 | 31.74 | 36.31 | 39.32 | 38.82 | 41.20 | NA | NA | NA | |
| Operating Lease Liability Noncurrent | 3.53 | 3.57 | 4.03 | 4.47 | 4.74 | 3.76 | 4.03 | 4.42 | 4.88 | 4.00 | 4.07 | 4.78 | 4.34 | 5.69 | 6.54 | 7.86 | 9.82 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2023-12-31 | 2023-09-30 | 2023-06-30 | 2023-03-31 | 2022-12-31 | 2022-09-30 | 2022-06-30 | 2022-03-31 | 2021-12-31 | 2021-09-30 | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stockholders Equity | 373.90 | 365.32 | 366.53 | 368.72 | 378.82 | 388.65 | 413.18 | 432.72 | 446.22 | 454.48 | 459.08 | 408.84 | 401.52 | 436.30 | 451.02 | 454.97 | 457.49 | 471.25 | 488.55 | 517.56 | 525.53 | 535.26 | 551.36 | 472.00 | 508.19 | 481.99 | 501.19 | 537.87 | 544.61 | NA | NA | NA | |
| Stockholders Equity Including Portion Attributable To Noncontrolling Interest | 374.22 | 365.64 | 366.86 | 369.04 | 379.15 | 388.97 | 413.51 | 433.04 | 446.54 | 454.80 | 459.40 | 409.16 | 401.84 | 436.65 | 451.36 | 455.31 | 478.92 | 494.15 | 511.24 | 542.12 | 554.93 | 564.89 | 580.82 | 503.17 | 523.17 | 498.01 | 519.02 | 560.69 | 550.15 | NA | NA | NA | |
| Common Stock Value | 0.28 | 0.28 | 0.28 | 0.28 | 0.27 | 0.27 | 0.27 | 0.27 | 0.26 | 0.24 | 0.24 | 0.24 | 0.23 | 0.23 | 0.23 | 0.23 | 0.22 | 0.22 | 0.22 | 0.21 | 0.20 | 0.20 | 0.20 | 0.18 | 0.18 | 0.18 | 0.18 | 0.18 | 0.18 | NA | NA | NA | |
| Additional Paid In Capital Common Stock | 472.69 | 471.16 | 469.62 | 467.90 | 466.67 | 465.45 | 464.22 | 463.14 | 461.93 | 455.37 | 454.08 | 452.29 | 451.18 | 450.32 | 449.12 | NA | 429.32 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| Retained Earnings Accumulated Deficit | -102.42 | -108.15 | -107.27 | -102.70 | -93.11 | -79.77 | -55.42 | -37.74 | -22.91 | -7.06 | -1.23 | -50.03 | -51.84 | -13.02 | 5.06 | 11.13 | 27.08 | 64.93 | 83.31 | 111.70 | 126.83 | 134.63 | 150.59 | 175.61 | 216.51 | 187.55 | 208.03 | 242.02 | 249.41 | NA | NA | NA | |
| Accumulated Other Comprehensive Income Loss Net Of Tax | 7.58 | 6.25 | 8.13 | 7.36 | 6.85 | 4.55 | 5.96 | 8.85 | 8.05 | 7.04 | 7.11 | 7.45 | 2.79 | -0.38 | -2.54 | -2.97 | 1.55 | -21.11 | -19.16 | -16.81 | -16.79 | -13.95 | -13.13 | -10.42 | -12.49 | -8.69 | -9.69 | -10.68 | -11.34 | NA | NA | NA | |
| Treasury Stock Value | 4.22 | 4.22 | 4.22 | 4.12 | 1.85 | 1.85 | 1.85 | 1.79 | 1.12 | 1.12 | 1.12 | 1.11 | 0.85 | 0.85 | 0.85 | 0.84 | 0.67 | 0.61 | 0.37 | 0.37 | 0.09 | 0.09 | 0.05 | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| Minority Interest | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.35 | 0.35 | 0.34 | 21.43 | 22.89 | 22.69 | 24.57 | 29.40 | 29.63 | 29.45 | 31.17 | 14.97 | 16.01 | 17.83 | 22.81 | 5.54 | NA | NA | NA | |
| Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value | 1.51 | 1.54 | 1.72 | 1.22 | 1.22 | 1.23 | 1.07 | 1.07 | 1.24 | 1.29 | 1.35 | 1.11 | 0.76 | 1.20 | 0.94 | 1.07 | 1.16 | 2.30 | 0.81 | 0.78 | 0.89 | 0.71 | 1.42 | 0.48 | -1.09 | 0.27 | NA | NA | NA | NA | NA | NA |
| 2023-12-31 | 2023-09-30 | 2023-06-30 | 2023-03-31 | 2022-12-31 | 2022-09-30 | 2022-06-30 | 2022-03-31 | 2021-12-31 | 2021-09-30 | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Net Income Loss | 5.73 | -0.88 | -4.57 | -9.59 | -13.34 | -24.35 | -19.12 | -14.84 | -15.85 | -5.83 | 48.80 | 6.01 | -38.82 | -18.08 | -6.07 | -15.95 | -20.45 | -18.45 | -28.39 | -25.55 | -28.83 | -15.96 | -25.02 | -28.83 | 28.96 | -20.48 | -33.99 | -7.39 | -61.58 | -27.93 | -30.58 | -11.96 | |
| Profit Loss | 5.73 | -0.88 | -4.57 | -9.59 | -13.34 | -24.35 | -19.12 | -14.84 | -15.85 | -5.83 | 48.80 | 6.01 | -38.85 | -18.08 | -6.07 | -19.99 | -21.92 | -18.24 | -30.26 | -28.27 | -31.69 | -15.77 | -26.63 | -31.69 | 27.90 | -22.36 | -36.49 | -7.60 | -61.77 | -28.01 | -30.79 | -12.58 | |
| Depreciation Depletion And Amortization | 13.02 | 13.46 | 13.57 | 13.76 | 13.62 | 13.75 | 14.21 | 14.37 | 14.20 | 14.31 | 14.09 | 14.80 | 10.24 | 16.61 | 15.31 | 15.00 | 15.41 | 16.09 | 17.49 | 17.19 | 16.99 | 17.34 | 18.41 | 19.51 | 20.02 | 15.62 | 14.63 | 12.50 | 13.76 | 14.21 | 15.25 | 14.84 | |
| Deferred Income Tax Expense Benefit | 2.64 | -0.96 | -5.08 | -1.66 | 0.96 | 6.08 | -3.41 | -3.53 | -2.78 | -2.71 | 14.40 | -4.06 | -0.23 | 12.33 | -2.08 | -7.77 | -3.03 | -0.11 | -4.57 | -5.16 | -1.76 | -3.58 | -6.11 | -11.29 | -48.47 | -6.97 | -1.06 | -4.50 | NA | NA | NA | NA | |
| Share Based Compensation | 1.51 | 1.54 | 1.72 | 1.23 | 1.96 | 1.23 | 1.01 | 0.40 | 1.24 | 1.29 | 1.78 | 0.85 | 0.86 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| Amortization Of Financing Costs | 0.28 | 0.46 | 0.42 | 0.42 | -1.00 | 0.35 | 0.36 | 0.29 | 0.33 | 0.26 | 0.25 | 0.26 | 0.13 | 0.34 | 0.32 | 0.31 | 0.30 | 0.29 | 0.27 | 0.32 | 0.23 | 1.28 | 0.26 | 0.24 | 0.32 | 0.28 | 0.85 | 0.90 | NA | NA | NA | NA |
| 2023-12-31 | 2023-09-30 | 2023-06-30 | 2023-03-31 | 2022-12-31 | 2022-09-30 | 2022-06-30 | 2022-03-31 | 2021-12-31 | 2021-09-30 | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Payments To Acquire Property Plant And Equipment | 3.64 | 6.46 | 0.04 | 0.47 | 0.18 | 0.24 | 0.02 | 0.02 | 0.44 | 2.91 | 0.93 | 2.72 | -4.13 | 5.17 | 8.53 | 11.24 | 5.89 | 8.38 | 20.00 | 21.18 | 14.22 | 22.21 | 6.99 | 8.56 | 16.67 | 23.55 | 18.66 | 10.14 | 18.08 | 36.97 | 24.93 | 20.91 |
| 2023-12-31 | 2023-09-30 | 2023-06-30 | 2023-03-31 | 2022-12-31 | 2022-09-30 | 2022-06-30 | 2022-03-31 | 2021-12-31 | 2021-09-30 | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenues | 77.07 | 75.57 | 66.89 | 59.97 | 57.93 | 59.79 | 54.02 | 45.59 | 47.97 | 43.66 | 42.80 | 36.51 | 36.04 | 45.70 | 41.88 | 41.74 | 49.07 | 54.70 | 64.34 | 56.25 | 51.72 | 70.25 | 60.70 | 51.72 | 49.34 | 47.81 | 42.32 | 34.30 | 44.36 | 54.12 | 57.27 | 59.88 | |
| Revenue From Contract With Customer Including Assessed Tax | 77.07 | 75.57 | 66.89 | 59.97 | 57.93 | 59.79 | 54.02 | 45.59 | 47.97 | 43.66 | 42.80 | 36.51 | 36.04 | 45.70 | 41.88 | 41.74 | 49.07 | 54.70 | 64.34 | 56.25 | 51.72 | 70.25 | 60.70 | 51.72 | 34.30 | 47.81 | 42.32 | 34.30 | 44.36 | 54.12 | 57.27 | 59.88 | |
| Bareboat Charter | 0.37 | 0.37 | 0.36 | 0.36 | 0.38 | 0.33 | 0.05 | 0.62 | 2.87 | 0.00 | 0.43 | 0.73 | 0.73 | 0.68 | 0.72 | 0.72 | 0.83 | 1.76 | 1.39 | 1.14 | 1.17 | 1.17 | 1.16 | 1.14 | 1.17 | 1.17 | 1.16 | 1.14 | NA | NA | NA | NA | |
| Other Marine Services | 10.21 | 6.54 | 5.72 | 4.20 | 2.76 | 2.96 | 4.46 | 2.23 | 2.81 | 1.88 | 0.89 | 1.49 | 1.02 | 1.44 | 1.35 | 1.73 | 3.77 | 3.19 | 4.18 | 2.98 | 14.24 | 6.18 | 2.72 | 3.44 | 2.29 | 1.38 | 2.36 | 2.43 | NA | NA | NA | NA | |
| Time Charter | 66.50 | 68.67 | 60.80 | 55.41 | 54.79 | 56.50 | 49.50 | 42.74 | 42.29 | 41.78 | 41.47 | 34.29 | 10.77 | 43.59 | 39.81 | 39.29 | 44.47 | 49.75 | 58.77 | 52.13 | 55.38 | 62.90 | 56.83 | 47.14 | 45.74 | 45.27 | 38.80 | 30.73 | NA | NA | NA | NA | |
| Bareboat Charter, | 0.37 | 0.37 | 0.36 | 0.36 | 0.38 | 0.33 | 0.05 | 0.62 | NA | NA | NA | NA | NA | NA | NA | NA | 0.10 | 1.17 | 1.16 | 1.14 | 1.17 | 1.17 | 1.16 | 1.14 | NA | NA | NA | NA | NA | NA | NA | NA | |
| Other Marine Services, | 0.14 | 0.18 | 0.41 | 1.33 | 0.59 | 0.42 | 0.53 | 0.75 | 2.06 | 1.01 | 0.36 | 0.86 | 0.56 | 0.21 | 0.17 | 0.15 | 0.26 | 0.22 | 0.27 | 0.64 | 0.18 | 0.42 | 0.84 | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| Other Marine Services,US | 5.40 | 5.44 | 2.99 | 3.84 | 2.92 | 2.16 | 2.40 | 2.05 | 1.12 | 1.22 | 0.73 | 0.55 | 0.79 | 0.47 | 0.51 | 0.64 | 0.52 | 0.84 | 1.32 | 1.13 | 8.71 | 2.72 | 1.68 | 1.66 | 1.08 | 1.12 | 1.20 | 0.83 | NA | NA | NA | NA | |
| Other Marine Services, Africa And Europe | 3.64 | 0.81 | -1.04 | -0.83 | -0.68 | 0.06 | 1.07 | -0.62 | -0.42 | -0.43 | -0.22 | -0.27 | 0.32 | -0.26 | -0.38 | 0.18 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| Other Marine Services, Middle East And Asia | 1.03 | 0.10 | 3.36 | -0.14 | -0.07 | 0.32 | 0.46 | 0.05 | 0.05 | 0.09 | 0.03 | 0.36 | 0.93 | 0.30 | 0.51 | 0.42 | 0.68 | 0.41 | 0.35 | 0.23 | 0.12 | -0.08 | -0.79 | -0.13 | -0.17 | -0.34 | 0.11 | 0.88 | NA | NA | NA | NA | |
| Time Charter, | 14.05 | 13.82 | 13.71 | 13.83 | 10.11 | 10.16 | 10.91 | 8.94 | 11.71 | 12.63 | 12.87 | 9.72 | 7.54 | 8.62 | 4.25 | 3.40 | 2.54 | 1.95 | 2.05 | 4.92 | 3.93 | 7.48 | 4.56 | 1.37 | NA | NA | NA | NA | NA | NA | NA | NA | |
| Time Charter,US | 12.93 | 16.24 | 6.12 | 6.56 | 16.57 | 17.07 | 9.76 | 7.86 | 5.29 | 5.29 | 3.42 | 1.49 | 2.35 | 1.67 | 1.48 | 4.38 | 7.41 | 10.91 | 12.63 | 8.01 | 10.97 | 12.80 | 9.05 | 5.98 | 5.61 | 4.59 | 4.89 | 3.00 | NA | NA | NA | NA | |
| Time Charter, Africa And Europe | 21.79 | 22.53 | 24.41 | 19.00 | 15.30 | 17.55 | 14.93 | 12.28 | 11.88 | 10.45 | 11.44 | 10.50 | 9.80 | 10.86 | 13.05 | 14.01 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| Time Charter, Middle East And Asia | 17.73 | 16.09 | 16.56 | 16.03 | 12.80 | 11.71 | 13.91 | 13.66 | 13.40 | 13.42 | 13.75 | 12.57 | 13.01 | 13.67 | 13.61 | 11.77 | 13.84 | 14.80 | 13.18 | 12.50 | 12.52 | 12.59 | 13.59 | 11.37 | 10.68 | 9.49 | 7.42 | 5.82 | NA | NA | NA | NA | |
| 14.56 | 14.36 | 14.48 | 15.52 | 11.08 | 10.91 | 11.49 | 10.30 | 16.25 | 13.64 | 13.22 | 10.58 | 8.09 | 8.83 | 4.42 | 3.54 | 2.90 | 3.34 | 3.48 | 6.70 | 5.29 | 9.06 | 6.56 | 2.63 | NA | NA | NA | NA | NA | NA | NA | NA | ||
| US | 18.33 | 21.68 | 9.11 | 10.41 | 19.49 | 19.24 | 12.16 | 9.92 | 6.79 | 6.50 | 4.58 | 2.76 | 3.88 | 2.87 | 2.71 | 5.74 | 8.66 | 12.35 | 14.18 | 9.14 | 19.68 | 15.52 | 10.73 | 7.64 | 6.68 | 5.70 | 6.09 | 3.82 | NA | NA | NA | NA | |
| Africa And Europe | 25.43 | 23.34 | 23.38 | 18.16 | 14.62 | 17.61 | 16.00 | 11.66 | 11.47 | 10.02 | 11.21 | 10.23 | 10.12 | 10.55 | 12.67 | 14.19 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| Middle East And Asia | 18.76 | 16.19 | 19.92 | 15.89 | 12.74 | 12.03 | 14.37 | 13.71 | 13.45 | 13.50 | 13.78 | 12.94 | 13.94 | 13.97 | 14.12 | 12.19 | 14.52 | 15.21 | 13.52 | 12.73 | 12.63 | 12.51 | 12.80 | 11.24 | 10.51 | 9.15 | 7.52 | 6.70 | NA | NA | NA | NA |
