Earnings per Share - Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Diluted earnings per share:
Net income available for common stockholders, net of dividends and undistributed earnings allocated to participating securities	$ 133,885	$ 255,215	$ 463,204
Weighted average shares of common stock outstanding:
Issued and outstanding (in shares)	94,076,165	103,997,767	117,339,539
Weighted average shares of common stock outstanding (in shares)	94,076,165	104,422,443	118,423,928
Diluted earnings per share (in dollars per share)	$ 1.42	$ 2.44	$ 3.91
Options
Weighted average shares of common stock outstanding:
Dilutive impact excluded from computation of earnings per share (in shares)	37,274
Class A
Weighted average shares of common stock outstanding:
Issued and outstanding (in shares)	94,076,165	103,997,767	117,339,539
Issuable pursuant to Amended and Restated 2015 Management Incentive Plan (in shares)	0	424,676	1,084,389
Weighted average shares of common stock outstanding (in shares)	94,076,165	104,422,443	118,423,928