Net Income per Common Share - Schedule of Calculation of Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Basic:
Net income	$ 27,383	$ 37,297	$ 80,309	$ 98,737
Average common shares outstanding (in shares)	29,910	32,084	30,487	32,066
Basic net income per common share (in dollars per share)	$ 0.91	$ 1.16	$ 2.63	$ 3.08
Diluted:
Net income	$ 27,383	$ 37,297	$ 80,309	$ 98,737
Average common shares outstanding (in shares)	29,910	32,084	30,487	32,066
Adjustment for common share equivalents (in shares)	34	71	48	72
Average common shares outstanding-diluted (in shares)	29,944	32,155	30,535	32,138
Diluted net income per common share (in dollars per share)	$ 0.91	$ 1.16	$ 2.63	$ 3.07
Anti-dilutive shares (in shares)	3	3	3	0