Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share
Common stock, shares authorized	100,000,000	100,000,000
Reconciliation of factors used in computing basic and diluted earnings per common share
Net income	$ 66,555	$ 47,700	$ 35,299
Weighted average common shares outstanding for basic earnings per common share (in shares)	60,602,962	60,133,821	59,478,343
Dilutive potential common shares	487,328	555,241	690,796
Shares used in computing diluted earnings per common share (in shares)	61,090,290	60,689,062	60,169,139
Basic earnings per share (in dollars per share)	$ 1.10	$ 0.79	$ 0.59
Diluted earnings per share (in dollars per share)	$ 1.09	$ 0.79	$ 0.59
Number of shares in computing diluted earnings per common share	1,325,948	1,058,250	1,524,757