Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net income per share calculations for basic and diluted methods
Net income	$ 28,439	$ 37,816
Shares:
Weighted average common shares outstanding	55,427,696	54,471,860
Dilutive effect of outstanding options, warrants, and restricted stock units as determined by the application of the treasury stock method (in shares)	755,748	563,946
Weighted average common shares outstanding, as adjusted for diluted earnings per share calculation	56,194,946	55,035,806
Basic earnings per common share (in dollars per share)	$ 0.51	$ 0.69
Diluted earnings per common share (in dollars per share)	$ 0.51	$ 0.69
Total anti-dilutive common stock equivalents	241,452	358,279
RSU and DSU awards
Shares:
Total anti-dilutive common stock equivalents		243,396
PSU awards
Shares:
Total anti-dilutive common stock equivalents	241,452	114,883
Employee Stock Purchase Plan Shares
Shares:
Dilutive effect of outstanding options, warrants, and restricted stock units as determined by the application of the treasury stock method (in shares)	11,502