Stockholder's Equity and Earnings (Loss) Per Share - Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Basic earnings (loss) per share: | |||||||||||||||||||||
| Net income (loss) | $ 68,207 | $ 69,512 | $ 42,700 | $ 55,546 | $ 65,915 | $ (801) | $ (1,169) | $ (4,981) | $ 235,965 | $ 58,964 | [1],[2] | $ (92,453) | [3],[4] | ||||||||
| Weighted average common shares outstanding (in shares) | 44,845,000 | 44,756,000 | 44,737,000 | 44,650,000 | 44,579,000 | 44,502,000 | 39,500,000 | 37,500,000 | 44,750,000 | 41,548,000 | [1] | 31,500,000 | [3] | ||||||||
| Basic earnings (loss) per share (in USD per share) | $ 1.52 | $ 1.55 | $ 0.95 | $ 1.24 | $ 1.48 | $ (0.02) | $ (0.03) | $ (0.13) | $ 5.27 | $ 1.42 | $ (2.94) | ||||||||||
| Diluted earnings (loss) per share: | |||||||||||||||||||||
| Net income (loss) | $ 68,207 | $ 69,512 | $ 42,700 | $ 55,546 | $ 65,915 | $ (801) | $ (1,169) | $ (4,981) | $ 235,965 | $ 58,964 | [1],[2] | $ (92,453) | [3],[4] | ||||||||
| Weighted average common shares, including dilutive effect (in shares) | 45,021,000 | 41,639,000 | 31,500,000 | ||||||||||||||||||
| Diluted earnings (loss) per share (in USD per share) | $ 1.51 | $ 1.54 | $ 0.95 | $ 1.24 | $ 1.48 | $ (0.02) | $ (0.03) | $ (0.13) | $ 5.24 | $ 1.42 | $ (2.94) | ||||||||||
| Restricted Stock | |||||||||||||||||||||
| Diluted earnings (loss) per share: | |||||||||||||||||||||
| Incremental common shares attributable to dilutive effect of share-based payment arrangements | 0 | ||||||||||||||||||||
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- References No definition available.
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- References No definition available.
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| X | ||||||||||
- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- 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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| X | ||||||||||
- Definition Per unit of ownership amount after tax of income (loss) available to limited partnership (LP) unit-holder and units that would have been outstanding assuming the issuance of limited partner units for dilutive potential units outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Per unit of ownership amount after tax of income (loss) available to outstanding limited partnership (LP) unit-holder. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Weighted average number of limited partnership units outstanding determined by relating the portion of time within a reporting period that limited partnership units have been outstanding to the total time in that period. Used in the calculation of diluted net income or loss per limited partnership unit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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