EPS (Computation of Basic and Diluted Earnings Per 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
Earnings Per Share [Abstract]
Net income	$ 15,026	$ 18,143	$ 31,821	$ 37,883
Dividends and undistributed earnings allocated to participating securities	(40)	(51)	(83)	(105)
Net income available to common shareholders	$ 14,986	$ 18,092	$ 31,738	$ 37,778
Weighted-average common shares outstanding for basic EPS	14,651,851	14,943,486	14,696,323	14,930,017
Dilutive effect of stock-based awards (shares)	52,800	63,985	60,739	64,121
Weighted-average common and potential common shares for diluted EPS (shares)	14,704,651	15,007,471	14,757,062	14,994,138
Basic EPS (in dollars per share)	$ 1.02	$ 1.21	$ 2.16	$ 2.53
Diluted EPS (in dollars per share)	$ 1.02	$ 1.21	$ 2.15	$ 2.52