Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2023 |
Sep. 30, 2023 |
Jun. 30, 2023 |
Mar. 31, 2023 |
Dec. 31, 2022 |
Sep. 30, 2022 |
Jun. 30, 2022 |
Mar. 31, 2022 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
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| Quarterly Financial Information Disclosure [Abstract] | ||||||||||||||||
| Operating revenue | $ 338,428 | $ 340,976 | $ 333,622 | $ 357,709 | $ 403,039 | $ 433,201 | $ 442,191 | $ 401,203 | $ 1,370,735 | $ 1,679,634 | $ 1,387,227 | |||||
| Net income from continuing operations | (14,721) | 6,493 | 17,127 | 33,904 | 39,009 | 48,508 | 51,434 | 40,463 | 42,803 | 179,414 | 106,879 | |||||
| Income (loss) from discontinued operations, net of tax | 116,465 | 2,795 | 2,824 | 2,464 | 3,933 | 3,625 | 3,996 | 2,223 | 124,548 | 13,777 | (1,020) | |||||
| Net income and comprehensive income | $ 101,744 | $ 9,288 | $ 19,951 | $ 36,368 | $ 42,942 | $ 52,133 | $ 55,430 | $ 42,686 | $ 167,351 | $ 193,191 | $ 105,859 | |||||
| Net income per share: | ||||||||||||||||
| Continuing operations (in dollars per share) | $ (0.58) | $ 0.25 | $ 0.66 | $ 1.28 | $ 1.46 | $ 1.80 | $ 1.90 | $ 1.49 | $ 1.64 | $ 6.66 | $ 3.91 | |||||
| Discontinued operations (in dollars per share) | 4.51 | 0.11 | 0.11 | 0.09 | 0.15 | 0.13 | 0.15 | 0.08 | 4.78 | 0.51 | (0.04) | |||||
| Net income per basic share (in dollars per share) | 3.94 | 0.36 | 0.76 | 1.37 | 1.61 | 1.94 | 2.05 | 1.57 | 6.42 | 7.17 | 3.87 | |||||
| Diluted net income (loss) per share: | ||||||||||||||||
| Continuing operations (in dollars per share) | (0.58) | 0.25 | 0.65 | 1.27 | 1.45 | 1.80 | 1.89 | 1.48 | 1.64 | 6.63 | 3.89 | |||||
| Discontinued operations (in dollars per share) | 4.51 | 0.11 | 0.11 | 0.09 | 0.15 | 0.13 | 0.15 | 0.08 | 4.77 | 0.51 | (0.04) | |||||
| Net income per diluted share (in dollars per share) | $ 3.93 | $ 0.36 | $ 0.76 | $ 1.37 | $ 1.60 | $ 1.93 | $ 2.04 | $ 1.57 | $ 6.40 | [1] | $ 7.14 | [1] | $ 3.85 | [1] | ||
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- Definition Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation. No definition available.
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- Definition Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation. No definition available.
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- References No definition available.
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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