Earnings Per Common 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
Net income per share calculations for basic and diluted methods
Net income	$ 29,824	$ 29,766	$ 58,263	$ 67,582
Shares:
Weighted average number of common shares outstanding, basic	55,421,887	55,050,071	55,424,776	54,762,563
Weighted average number of common shares outstanding, diluted	56,104,017	55,730,883	56,149,466	55,384,942
Basic earnings per common share (in dollars per share)	$ 0.54	$ 0.54	$ 1.05	$ 1.23
Diluted earnings per common share (in dollars per share)	$ 0.53	$ 0.53	$ 1.04	$ 1.22
Total anti-dilutive common stock equivalents	465,287	86,080	353,369	222,180
Stock options
Shares:
Dilutive effect of common stock equivalents		2,806	2,284	1,453
Total anti-dilutive common stock equivalents	31,166		15,583
Warrants
Shares:
Dilutive effect of common stock equivalents	1,686	1,789	1,770	1,746
RSU awards
Shares:
Dilutive effect of common stock equivalents	655,368	667,181	679,471	614,660
Total anti-dilutive common stock equivalents	155,649		77,824	106,213
PSU awards
Shares:
Dilutive effect of common stock equivalents	14,534	2,888	15,456	1,444
Total anti-dilutive common stock equivalents	278,472	86,080	259,962	100,482
DSU awards
Shares:
Dilutive effect of common stock equivalents	3,039	6,148	16,206	3,076
Total anti-dilutive common stock equivalents				15,485
Employee Stock Purchase Plan Shares
Shares:
Dilutive effect of common stock equivalents	7,503		9,503