Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
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	$ 47,700	$ 35,299	$ 40,461
Weighted average common shares outstanding for basic earnings per common share (in shares)	60,133,821	59,478,343	46,684,384
Dilutive potential common shares	555,241	690,796	1,221,845
Shares used in computing diluted earnings per common share (in shares)	60,689,062	60,169,139	47,906,229
Basic earnings per share (in dollars per share)	$ 0.79	$ 0.59	$ 0.87
Diluted earnings per share (in dollars per share)	$ 0.79	$ 0.59	$ 0.84
Number of shares not in computing diluted earnings per common share	1,058,250	1,524,757	789,065