Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Outstanding stock options (in shares)	0	0	0	0
Distributed earnings allocated to common stock	$ 7,890	$ 7,749	$ 23,230	$ 22,681
Undistributed earnings allocated to common stock	24,571	24,472	65,489	67,422
Net earnings allocated to common stock	32,461	32,221	88,719	90,103
Net earnings allocated to participating securities	276	262	722	708
Net income available to common shareholders	$ 32,737	$ 32,483	$ 89,441	$ 90,811
Weighted average shares outstanding for basic earnings per common share	24,656,736	24,919,956	24,697,106	25,126,703
Dilutive effect of stock compensation (in shares)	0	0	0	0
Weighted average shares outstanding for diluted earnings per common share	24,656,736	24,919,956	24,697,106	25,126,703
Basic earnings per common share (in dollars per share)	$ 1.32	$ 1.29	$ 3.59	$ 3.59
Diluted earnings per common share (in dollars per share)	$ 1.32	$ 1.29	$ 3.59	$ 3.59