Stockholders' Equity - Schedule of Changes in Stockholders' Equity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Balance	$ 846,689	$ 803,302	$ 853,211	$ 803,470
Net income	20,312	18,397	36,710	36,259
Other comprehensive (loss) income	3,151	(4,211)	1,817	(1,552)
Equity compensation	2,938	2,944	6,688	6,507
Exercise of stock options	167	102	278	194
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units	2,264	1,539	2,265	1,539
Payments for stock buybacks	(37)	(50)	(22,852)	(21,766)
Dividends declared	(2,639)	(2,606)	(5,272)	(5,234)
Balance	$ 872,845	$ 819,417	$ 872,845	$ 819,417
Common Stock
Balance (in shares)	18,788	18,793	18,883	18,876
Balance	$ 24	$ 23	$ 23	$ 23
Exercise of stock options (in shares)	4	4	8	8
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units (in shares)	23	22	149	162
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units			$ 1
Payments for stock buybacks (in shares)		(1)	(225)	(228)
Balance (in shares)	18,815	18,818	18,815	18,818
Balance	$ 24	$ 23	$ 24	$ 23
Additional Paid-in Capital
Balance	405,818	388,639	401,957	384,984
Equity compensation	2,938	2,944	6,688	6,507
Exercise of stock options	167	102	278	194
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units	2,264	1,539	2,264	1,539
Balance	411,187	393,224	411,187	393,224
Retained Earnings
Balance	716,795	664,532	703,030	649,298
Net income	20,312	18,397	36,710	36,259
Dividends declared	(2,639)	(2,606)	(5,272)	(5,234)
Balance	$ 734,468	$ 680,323	$ 734,468	$ 680,323
Treasury Stock
Balance (in shares)	5,131	4,886	4,906	4,659
Balance	$ (266,481)	$ (241,516)	$ (243,666)	$ (219,800)
Payments for stock buybacks (in shares)		1	225	228
Payments for stock buybacks	$ (37)	$ (50)	$ (22,852)	$ (21,766)
Balance (in shares)	5,131	4,887	5,131	4,887
Balance	$ (266,518)	$ (241,566)	$ (266,518)	$ (241,566)
Accumulated Other Comprehensive Loss
Balance	(9,467)	(8,376)	(8,133)	(11,035)
Other comprehensive (loss) income	3,151	(4,211)	1,817	(1,552)
Balance	$ (6,316)	$ (12,587)	$ (6,316)	$ (12,587)