CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock
Shares at beginning of year (in shares) at Dec. 31, 2019			72,202					49,277
Beginning of period at Dec. 31, 2019	$ 167,263	$ (214)	$ 722	$ 459,545	$ (1,526)	$ 350,545	$ (214)	$ (642,023)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	56,039					56,039
Issuance for stock-based compensation and dividend equivalents, net of forfeitures (in shares)			398
Issuance for stock-based compensation and dividend equivalents, net of forfeitures	0		$ 4	934		(938)
Stock-based compensation expense	$ 11,595			11,595
Employee stock purchase plan (in shares)	(19)							(19)
Employee stock purchase plan	$ 549			304				$ 245
Dividends	(16,787)					(16,787)
Defined benefit pension plan, no tax benefit	(1,706)				(1,706)
Change in fair value of interest rate swap, net of tax	(1,191)				(1,191)
Repurchases of common stock (in shares)								1,169
Repurchases of common stock	(35,613)							$ (35,613)
Shares at end of year (in shares) at Dec. 31, 2020			72,600					50,427
End of period at Dec. 31, 2020	179,935		$ 726	472,378	(4,423)	388,645		$ (677,391)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Tax effect of new accounting standard | Accounting Standards Update 2016-13	75
Net income	75,177					75,177
Issuance for stock-based compensation and dividend equivalents, net of forfeitures (in shares)			397
Issuance for stock-based compensation and dividend equivalents, net of forfeitures	0		$ 4	1,102		(1,106)
Stock-based compensation expense	$ 13,999			13,999
Employee stock purchase plan (in shares)	(15)							(15)
Employee stock purchase plan	$ 762			557				$ 205
Dividends	(20,120)					(20,120)
Defined benefit pension plan, no tax benefit	3,103				3,103
Change in fair value of interest rate swap, net of tax	1,941				1,941
Repurchases of common stock (in shares)								1,080
Repurchases of common stock	(66,391)							$ (66,391)
Shares at end of year (in shares) at Dec. 31, 2021			72,997					51,492
End of period at Dec. 31, 2021	188,406		$ 730	488,036	621	442,596		$ (743,577)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	75,431					75,431
Issuance for stock-based compensation and dividend equivalents, net of forfeitures (in shares)			245
Issuance for stock-based compensation and dividend equivalents, net of forfeitures	0		$ 2	1,234		(1,236)
Stock-based compensation expense	$ 17,655			17,655
Employee stock purchase plan (in shares)	(17)							(17)
Employee stock purchase plan	$ 1,054			809				$ 245
Dividends	(24,027)					(24,027)
Defined benefit pension plan, no tax benefit	0
Change in fair value of interest rate swap, net of tax	(615)				(615)
Repurchases of common stock (in shares)								1,269
Repurchases of common stock	(75,706)							$ (75,706)
Shares at end of year (in shares) at Dec. 31, 2022			73,242					52,744
End of period at Dec. 31, 2022	$ 182,198		$ 732	$ 507,734	$ 6	$ 492,764		$ (819,038)