Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Basic and Diluted Earnings:
Net income	$ 26,951	$ 25,405	$ 24,996	$ 29,306	$ 21,317	$ 34,091	$ 77,352	$ 84,714
Basic weighted-average shares outstanding (in shares)	32,112			32,465			32,195	32,641
Add: Stock awards (in shares)	109			91			146	118
Diluted weighted-average shares outstanding (in shares)	32,221			32,556			32,341	32,759
Basic earnings per share:
Earnings per common share - basic (in dollars per share)	$ 0.84			$ 0.90			$ 2.40	$ 2.60
Diluted earnings per share:
Earnings per common share - diluted (in dollars per share)	$ 0.84			$ 0.90			$ 2.39	$ 2.59
Number of antidilutive options (in shares)	22			462			0	288