Earnings per Share - Basic (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic earnings (loss) per share:
Net income (loss) available for common stockholders	$ (58,595)	$ 289,441	$ 2,939
Less: Dividends and undistributed earnings allocated to participating securities	(1,926)	(5,418)	(1,326)
Net income (loss) available for common stockholders, net of dividends and undistributed earnings allocated to participating securities	$ (60,521)	$ 284,023	$ 1,613
Weighted average shares of common stock outstanding:
Outstanding (in shares)	113,918,103	100,875,793	62,579,147
Basic earnings (loss) per share (in dollars per share)	$ (0.53)	$ 2.82	$ 0.03
Class A
Weighted average shares of common stock outstanding:
Outstanding (in shares)	113,918,103	100,875,793	62,579,147