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Earnings (Loss) per Share - Calculation of Weighted Average Common Shares Outstanding used in Computation of Diluted Earnings Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] |  |  |
Net Earnings (Loss) | $ 116,738 | $ (277,353) | $ (449,305)
Weighted Average Shares, basic (in shares) | 36,393,000 | 35,689,000 | 35,427,000
Loss Per Share, Basic (in dollars per share) | $ 3.21 | $ (7.77) | $ (12.68)
Effect of dilutive securities |  |  |
Restricted stock awards, Net Earnings (Loss) | $ 0 | $ 0 | $ 0
Restricted stock awards, Weighted Average Shares (in shares) | 58,000 | 0 | 0
Restricted share units, Net Earnings (Loss) | $ 0 | $ 0 | $ 0
Restricted share units, Weighted Average Shares (in shares) | 689,000 | 0 | 0
Performance share units, Net Earnings (Loss) | $ 0 | $ 0 | $ 0
Performance share units, Weighted Average Shares (in shares) | 83,000 | 0 | 0
Stock Options, Net Earnings (Loss) | $ 0 | $ 0 | $ 0
Stock Options, Weighted Average Shares (in shares) | 48,000 | 0 | 0
Warrants, Net Earnings (Loss) | $ 0 | $ 0 | $ 0
Warrants, Weighted Average Shares (in shares) | 0 | 0 | 0
Net (Loss) Income, Diluted | $ 116,738 | $ (277,353) | $ (449,305)
Weighted Average Shares, Diluted (in shares) | 37,271,000 | 35,689,000 | 35,427,000
(Loss) Earnings Per Share, Diluted (in dollars per share) | $ 3.13 | $ (7.77) | $ (12.68)
Warrants |  |  |
Effect of dilutive securities |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) |  | 0 | 0
Performance Share Units |  |  |
Effect of dilutive securities |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) |  | 0 | 0
Restricted Stock |  |  |
Effect of dilutive securities |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) |  | 0 | 0

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- Definition Shares issuable for little or no cash consideration upon the satisfaction of certain conditions (contingently issuable shares) are considered outstanding common shares and included in the computation of basic Earnings Per Share as of the date that all necessary conditions have been satisfied (in essence, when issuance of the shares is no longer contingent). Outstanding common shares that are contingently returnable (that is, subject to recall) are treated in the same manner as contingently issuable shares. Contingently issuable shares include shares that (a) will be issued in the future upon the satisfaction of specified conditions, (b) have been placed in escrow and all or part must be returned if specified conditions are not met, or (c) have been issued but the holder must return all or part if specified conditions are not met. The number of contingently issuable shares is determined by relating the portion of time within a reporting period that these shares have been outstanding to the total time in that period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e2646-109256 + Details
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- 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e1448-109256 + Details
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