Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock Voting [Member]	Additional Paid-In Capital [Member]	Treasury Stock - Common Stock Voting [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]
Beginning Balance at Dec. 31, 2023	$ 1,292,963	$ 123	$ 333,292	$ (260,298)	$ 1,244,216	$ (24,370)
Net Income (Loss)	72,615				72,615
Cumulative translation adjustment	(4,241)					(4,241)
Unrealized net gain (loss) on securities available-for-sale, net of tax	(40)					(40)
Stock-based compensation	7,298		7,298
Exercise of stock options	1,977		1,977
Withholding tax payments on Full Value Awards vesting and stock option exercises	(14,893)		(14,893)
Reissuance of treasury stock	704		(155)	1,440	(581)
Repurchases of common stock	(10,147)			(10,147)
Cash dividend on common stock	(28,003)				(28,003)
Ending Balance at Mar. 31, 2024	1,318,233	123	327,519	(269,005)	1,288,247	(28,651)
Beginning Balance at Dec. 31, 2023	1,292,963	123	333,292	(260,298)	1,244,216	(24,370)
Net Income (Loss)	209,042
Cumulative translation adjustment	13,936
Ending Balance at Sep. 30, 2024	1,386,254	123	344,138	(316,524)	1,368,661	(10,144)
Beginning Balance at Mar. 31, 2024	1,318,233	123	327,519	(269,005)	1,288,247	(28,651)
Net Income (Loss)	64,938				64,938
Cumulative translation adjustment	(563)					(563)
Unrealized net gain (loss) on securities available-for-sale, net of tax	(13)					(13)
Stock-based compensation	8,328		8,328
Withholding tax payments on Full Value Awards vesting and stock option exercises	(206)		(206)
Repurchases of common stock	(33,450)			(33,450)
Cash dividend on common stock	(28,046)				(28,046)
Ending Balance at Jun. 30, 2024	1,329,221	123	335,641	(302,455)	1,325,139	(29,227)
Net Income (Loss)	71,489				71,489
Cumulative translation adjustment	18,740					18,740
Unrealized net gain (loss) on securities available-for-sale, net of tax	343					343
Stock-based compensation	8,294		8,294
Exercise of stock options	444		444
Withholding tax payments on Full Value Awards vesting and stock option exercises	(164)		(164)
Reissuance of treasury stock	886		(77)	963
Repurchases of common stock	(15,032)			(15,032)
Cash dividend on common stock	(27,967)				(27,967)
Ending Balance at Sep. 30, 2024	1,386,254	123	344,138	(316,524)	1,368,661	(10,144)
Beginning Balance at Dec. 31, 2024	1,388,660	123	350,701	(333,369)	1,405,904	(34,699)
Net Income (Loss)	15,065				15,065
Cumulative translation adjustment	11,010					11,010
Unrealized net gain (loss) on securities available-for-sale, net of tax	234					234
Stock-based compensation	7,696		7,696
Withholding tax payments on Full Value Awards vesting and stock option exercises	(9,525)		(9,525)
Reissuance of treasury stock	940		(164)	1,104
Repurchases of common stock	(38,077)			(38,077)
Cash dividend on common stock	(28,690)				(28,690)
Ending Balance at Mar. 31, 2025	1,347,313	123	348,708	(370,342)	1,392,279	(23,455)
Beginning Balance at Dec. 31, 2024	1,388,660	123	350,701	(333,369)	1,405,904	(34,699)
Net Income (Loss)	154,390
Cumulative translation adjustment	30,593
Ending Balance at Sep. 30, 2025	1,378,450	123	358,607	(451,403)	1,474,752	(3,629)
Beginning Balance at Mar. 31, 2025	1,347,313	123	348,708	(370,342)	1,392,279	(23,455)
Net Income (Loss)	71,149				71,149
Cumulative translation adjustment	24,628					24,628
Unrealized net gain (loss) on securities available-for-sale, net of tax	148					148
Stock-based compensation	8,430		8,430
Withholding tax payments on Full Value Awards vesting and stock option exercises	(321)		(321)
Repurchases of common stock	(36,687)			(36,687)
Cash dividend on common stock	(28,475)				(28,475)
Ending Balance at Jun. 30, 2025	1,386,185	123	356,817	(407,029)	1,434,953	1,321
Net Income (Loss)	68,176				68,176
Cumulative translation adjustment	(5,045)					(5,045)
Unrealized net gain (loss) on securities available-for-sale, net of tax	95					95
Stock-based compensation	8,832		8,832
Withholding tax payments on Full Value Awards vesting and stock option exercises	(6,915)		(6,915)
Reissuance of treasury stock	750		(127)	877
Repurchases of common stock	(45,251)			(45,251)
Cash dividend on common stock	(28,377)				(28,377)
Ending Balance at Sep. 30, 2025	$ 1,378,450	$ 123	$ 358,607	$ (451,403)	$ 1,474,752	$ (3,629)