Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Basic EPS [Abstract]
Net income	$ 154,885	$ 104,388	$ 121,021
Weighted average shares, basic (in shares)	43,421	43,693	43,815
Basic EPS (in dollars per share)	$ 3.57	$ 2.39	$ 2.76
Diluted earnings per share [Abstract]
Net income	$ 154,885	$ 104,388	$ 121,021
Dilutive effect of stock based compensation (in shares)	298	296	309
Weighted average shares, diluted (in shares)	43,719	43,989	44,124
Diluted EPS (in dollars per share)	$ 3.54	$ 2.37	$ 2.74