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Net Income (Loss) Per Share Net Income (Loss) Per Share - Summary of Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Earnings Per Share [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations |  |  |  |  |  |  |  |  | $ (46,741) | $ (262,987) | $ 24,549
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 0 | 0 | 137,688
Net income (loss) |  |  |  |  |  |  |  |  | (46,741) | (262,987) | 162,237
Preferred Stock Dividends and Other Adjustments |  |  |  |  |  |  |  |  | (642) |  |
Net Income (Loss) Available to Common Stockholders, Basic |  |  |  |  |  |  |  |  | $ (47,383) | $ (262,987) | $ 162,237
Weighted average shares outstanding (in shares) |  |  |  |  |  |  |  |  | 42,030,000 | 31,678,000 | 27,433,000
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements |  |  |  |  |  |  |  |  | 0 | 0 | 322,000
Weighted average shares outstanding (in shares) |  |  |  |  |  |  |  |  | 42,030,000 | 31,678,000 | 27,755,000
Income (loss) from continuing operations per share (in usd per share) |  |  |  |  |  |  |  |  | $ (1.13) | $ (8.30) | $ 0.89
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share |  |  |  |  |  |  |  |  | 0.00 | 0.00 | 5.02
Basic net income (loss) per common share (in usd per share) | $ (0.35) | $ (0.14) | $ (0.17) | $ (0.47) | $ (5.18) | $ (0.48) | $ (0.91) | $ (0.23) | (1.13) | (8.30) | 5.91
Income (loss) from continuing operations per share (in usd per share) |  |  |  |  |  |  |  |  | (1.13) | (8.30) | 0.89
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share |  |  |  |  |  |  |  |  | 0.00 | 0.00 | 4.96
Diluted net income (loss) per common share (in usd per share) | $ (0.35) | $ (0.14) | $ (0.17) | $ (0.47) | $ (5.18) | $ (0.48) | $ (0.91) | $ (0.23) | (1.13) | (8.30) | 5.85
Common Stock, Dividends, Per Share, Declared |  |  |  |  |  |  |  |  | $ 0.21 | $ 0.28 | $ 0.28

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