Net Income Per Common Share - Basic and Diluted Net Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Basic
Net income applicable to common stock	$ 39,678	$ 40,867	$ 73,225	$ 98,775
Average common shares outstanding (shares)	55,906,755	56,325,717	55,858,243	56,283,195
Net income per common share - basic (usd per share)	$ 0.71	$ 0.73	$ 1.31	$ 1.75
Diluted
Net income applicable to common stock	$ 39,678	$ 40,867	$ 73,225	$ 98,775
Average common shares outstanding (shares)	55,906,755	56,325,717	55,858,243	56,283,195
Effect of dilutive stock-based compensation (shares)	276,090	310,181	272,519	295,385
Average common shares outstanding - diluted (shares)	56,182,845	56,635,898	56,130,762	56,578,580
Net income per common share - diluted (usd per share)	$ 0.71	$ 0.72	$ 1.30	$ 1.75