Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balances, value at Dec. 31, 2020	$ 989,588	$ 3,629	$ 510,405	$ 492,205	$ (16,651)
Balances, shares at Dec. 31, 2020		36,295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	35,770			35,770
Other comprehensive income (loss)	(507)				(507)
Dividends declared	(23,267)			(23,267)
Stock-based compensation expense	15,262		15,262
Shares repurchased and retired, value	(40,216)	$ (138)	(15,362)	(24,716)
Shares repurchased and retired, shares		(1,380)
Stock options exercised, value	346	$ 3	343
Stock options exercised, shares		30
Vesting of restricted stock units, value		$ 38	(38)
Vesting of restricted stock units, shares		377
Shares withheld for taxes, shares		(109)
Shares withheld for taxes, value	(3,174)	$ (11)	(3,163)
Ending Balances, value at Dec. 31, 2021	973,802	$ 3,521	507,447	479,992	(17,158)
Balances, shares at Dec. 31, 2021		35,213
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	68,229			68,229
Other comprehensive income (loss)	925				925
Dividends declared	(23,149)			(23,149)
Stock-based compensation expense	18,485		18,485
Shares repurchased and retired, value	(9,391)	$ (37)	(4,177)	(5,177)
Shares repurchased and retired, shares		(376)
Stock options exercised, value	716	$ 4	712
Stock options exercised, shares		45
Vesting of restricted stock units, value		$ 41	(41)
Vesting of restricted stock units, shares		407
Shares withheld for taxes, shares		(125)
Shares withheld for taxes, value	(3,201)	$ (13)	(3,188)
Ending Balances, value at Dec. 31, 2022	$ 1,026,416	$ 3,516	519,238	519,895	(16,233)
Balances, shares at Dec. 31, 2022	35,164	35,164
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 64,315			64,315
Other comprehensive income (loss)	2,373				2,373
Dividends declared	(23,673)			(23,673)
Stock-based compensation expense	15,286		15,286
Stock options exercised, value	129	$ 1	128
Stock options exercised, shares		8
Vesting of restricted stock units, value		$ 73	(73)
Vesting of restricted stock units, shares		732
Shares withheld for taxes, shares		(240)
Shares withheld for taxes, value	(5,761)	$ (24)	(5,737)
Ending Balances, value at Dec. 31, 2023	$ 1,079,085	$ 3,566	$ 528,842	$ 560,537	$ (13,860)
Balances, shares at Dec. 31, 2023	35,664	35,664