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Selected Quarterly Financial Data - Unaudited (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
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
Selected Quarterly Financial Data - Unaudited |  |  |  |  |  |  |  |  |  |  |
Net interest income | $ 33,797 | $ 32,445 | $ 33,887 | $ 29,412 | $ 30,361 | $ 27,952 | $ 21,411 | $ 18,225 | $ 129,541 | $ 97,950 | $ 66,105
Total other revenue | 62,365 | 62,558 | 50,072 | 44,848 | 77,464 | 55,580 | 46,923 | 53,162 | 219,845 | 233,131 | 190,487
Total other expenses | 41,670 | 48,882 | 45,471 | 46,287 | 50,255 | 34,739 | 40,610 | 43,849 | 182,308 | 169,454 | 149,889
Income before extinguishment of debt, income from equity affiliates and income taxes | 54,492 | 46,121 | 38,488 | 27,973 | 57,570 | 48,793 | 27,724 | 27,538 | 167,078 | 161,627 | 106,703
(Loss) gain on extinguishment of debt | (7,311) |  |  | (128) | (82) | (4,960) |  |  | (7,439) | (5,041) | 7,116
Income (loss) from equity affiliates | 1,502 | 3,718 | 3,264 | 2,151 | 91 | (1,028) | 1,387 | 746 | 10,635 | 1,196 | (2,951)
Provision for income taxes | (4,072) | (6,623) | (4,350) | 10 | (8,635) | (5,381) | (4,499) | 8,784 | (15,036) | (9,731) | (13,359)
Net income | 44,611 | 43,216 | 37,402 | 30,006 | 48,944 | 37,424 | 24,612 | 37,068 | 155,238 | 148,051 | 97,509
Preferred stock dividends | 1,888 | 1,888 | 1,888 | 1,888 | 1,888 | 1,888 | 1,888 | 1,888 | 7,554 | 7,554 | 7,554
Net income attributable to noncontrolling interest | 7,181 | 7,363 | 6,598 | 5,468 | 9,838 | 7,799 | 5,557 | 8,991 | 26,610 | 32,185 | 24,120
Net income attributable to common stockholders | $ 35,542 | $ 33,965 | $ 28,916 | $ 22,650 | $ 37,218 | $ 27,737 | $ 17,167 | $ 26,189 | $ 121,074 | $ 108,312 | $ 65,835
Basic earnings per common share (in dollars per share) | $ 0.35 | $ 0.36 | $ 0.32 | $ 0.27 | $ 0.48 | $ 0.37 | $ 0.26 | $ 0.42 | $ 1.30 | $ 1.54 | $ 1.14
Diluted earnings per common share (in dollars per share) | $ 0.34 | $ 0.35 | $ 0.31 | $ 0.26 | $ 0.47 | $ 0.36 | $ 0.25 | $ 0.42 | $ 1.27 | $ 1.50 | $ 1.12

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