Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock Voting [Member]	Additional Paid-In Capital [Member]	Treasury Stock - Common Stock Voting	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balance at Dec. 31, 2020	$ 955,061	$ 123	$ 329,742	$ (169,523)	$ 799,369	$ (4,650)
Net Income (Loss)	257,888				257,888
Cumulative translation adjustment and foreign currency exchange hedge, net of tax	(8,680)					(8,680)
Stock-based compensation	27,314		27,314
Exercise of stock options	7,096		7,096
Withholding tax payments on restricted stock vesting and stock option exercises	(33,890)		(33,890)
Repurchases of common stock	(63,189)			(63,189)
Cash dividend on common stock	(100,291)				(100,291)
Ending Balance at Dec. 31, 2021	1,041,309	123	330,262	(232,712)	956,966	(13,330)
Net Income (Loss)	250,224				250,224
Cumulative translation adjustment and foreign currency exchange hedge, net of tax	(24,367)					(24,367)
Stock-based compensation	29,864		29,864
Exercise of stock options	672		672
Withholding tax payments on restricted stock vesting and stock option exercises	(23,404)		(23,404)
Repurchases of common stock	(87,540)			(87,540)
Treasury stock reclassification			8,074	(8,074)
Cash dividend on common stock	(105,665)				(105,665)
Ending Balance at Dec. 31, 2022	1,081,093	123	345,468	(328,326)	1,101,525	(37,697)
Net Income (Loss)	258,055				258,055
Cumulative translation adjustment and foreign currency exchange hedge, net of tax	13,349					13,349
Unrealized net gain (loss) on securities available-for-sale, net of tax	(22)					(22)
Stock-based compensation	29,190		29,190
Exercise of stock options	940		940
Withholding tax payments on restricted stock vesting and stock option exercises	(25,839)		(25,839)
Reissuance of treasury stock	993		(242)	1,235
Treasury stock used for acquisition	43,841		(16,225)	66,793	(6,727)
Cash dividend on common stock	(108,637)				(108,637)
Ending Balance at Dec. 31, 2023	$ 1,292,963	$ 123	$ 333,292	$ (260,298)	$ 1,244,216	$ (24,370)