Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Net income available to common shareholders	$ 32,733	$ 22,683	$ 57,074	$ 44,025
Less: earnings allocated to participating securities	(291)	(203)	(505)	(403)
Net earnings allocated to common shareholders	32,442	22,480	56,569	43,622
Distributed earnings allocated to common stock	9,668	8,837	19,336	17,671
Undistributed earnings allocated to common stock	$ 22,774	$ 13,643	$ 37,233	$ 25,951
Average shares outstanding (in shares)	14,994	14,888	14,897	14,930
Effect of dilutive securities:
Employee stock awards (in shares)	18	21	22	24
Average shares outstanding, diluted (in shares)	15,012	14,909	14,919	14,954
Basic earnings per common share (in dollars per share)	$ 2.16	$ 1.51	$ 3.80	$ 2.92
Diluted earnings per share (in dollars per share)	$ 2.16	$ 1.51	$ 3.79	$ 2.92