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Earnings (Loss) Per Share - Schedule of Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ 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] |  |  |  |  |  |  |  |  |  |  |
Net Income (Loss) | $ 29,782 | $ 25,359 | $ 27,899 | $ 22,468 | $ 1,093 | $ 27,931 | $ 23,229 | $ 23,827 | $ 105,508 | $ 76,080 | $ 39,939
Noncontrolling interests |  |  |  |  |  |  |  |  | (9,859) | (551) | (2,927)
Net Income (Loss) Attributable to Stockholders |  |  |  |  |  |  |  |  | 95,649 | 75,529 | 37,012
Preferred stockholder dividends |  |  |  |  |  |  |  |  | (8,337) | (8,337) | (8,336)
Net Income (Loss) Attributable to Common Stockholders | $ 20,808 | $ 22,000 | $ 24,842 | $ 19,662 | $ 77 | $ 24,913 | $ 20,986 | $ 21,216 | $ 87,312 | $ 67,192 | $ 28,676
Shares (in thousands): |  |  |  |  |  |  |  |  |  |  |
Basic: Weighted-average number of shares outstanding (in shares) |  |  |  |  |  |  |  |  | 6,963 | 7,174 | 7,013
Plus: Incremental shares from assumed conversion of dilutive instruments (in shares) |  |  |  |  |  |  |  |  | 1,186 | 1,353 | 234
Diluted: Weighted-average number of shares outstanding (in shares) |  |  |  |  |  |  |  |  | 8,149 | 8,527 | 7,247
Earnings per share—basic (in $ per share) | $ 3.02 | $ 3.17 | $ 3.55 | $ 2.80 | $ 0.01 | $ 3.47 | $ 2.91 | $ 2.95 | $ 12.54 | $ 9.37 | $ 4.09
Earnings per share—diluted (in $ per share) | $ 2.83 | $ 2.95 | $ 3.26 | $ 2.61 | $ 0.01 | $ 3.19 | $ 2.75 | $ 2.77 | $ 11.74 | $ 8.86 | $ 3.96

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