Earnings Per Share - Two-class method (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share
Net Income	$ 10,184	$ 15,215
Dividends and undistributed earnings allocated to participating securities	125	254
Net income available to common shareholders	$ 10,059	$ 14,961
Weighted-average common shares outstanding for basic earnings per share	17,244	17,145
Dilutive effect of stock-based awards	256	320
Weighted-average common shares outstanding for diluted earnings per share	17,500	17,465
Earnings per common share:
Basic earnings per common share	$ 0.58	$ 0.87
Diluted earnings per common share	$ 0.57	$ 0.86