Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net income available to common shareholders	$ 29,115	$ 32,733	$ 58,638	$ 57,074
Less: earnings allocated to participating securities	(258)	(291)	(519)	(505)
Net earnings allocated to common shareholders	28,857	32,442	58,119	56,569
Distributed earnings allocated to common stock	10,418	9,668	20,835	19,336
Undistributed earnings allocated to common stock	$ 18,439	$ 22,774	$ 37,284	$ 37,233
Average shares outstanding (in shares)	14,695	14,994	14,721	14,897
Effect of dilutive securities:
Employee stock awards (in shares)	15	18	19	22
Average shares outstanding, diluted (in shares)	14,710	15,012	14,740	14,919
Basic earnings per common share (in dollars per share)	$ 1.96	$ 2.16	$ 3.95	$ 3.80
Diluted earnings per share (in dollars per share)	$ 1.96	$ 2.16	$ 3.94	$ 3.79