UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2020		24,418,939
Beginning balance at Dec. 31, 2020	$ 1,748,319	$ 244	$ 1,519,549	$ 179,646	$ 48,880
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	12,714		12,659	55
Exercise of stock options, net (in shares)		1,632
Exercise of stock options, net	113		113
Issuance of restricted stock, net (in shares)		256,877
Issuance of restricted stock, net	(2,339)	$ 3	(2,342)
Repurchase of common stock (in shares)		(76,969)
Repurchase of common stock	(5,905)	$ (1)	(4,790)	(1,114)
Common stock dividends	(44,329)			(44,329)
Foreign currency translation adjustment	(46,864)				(46,864)
Unrealized gains (losses) on marketable securities, net of tax	(60)				(60)
Net income	33,407			33,407
Ending balance (in shares) at Sep. 30, 2021		24,600,479
Ending balance at Sep. 30, 2021	1,695,056	$ 246	1,525,189	167,665	1,956
Beginning balance (in shares) at Jun. 30, 2021		24,621,111
Beginning balance at Jun. 30, 2021	1,733,180	$ 246	1,523,022	179,089	30,823
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	4,646		4,624	22
Issuance of restricted stock, net (in shares)		18,843
Issuance of restricted stock, net	1	$ 1
Repurchase of common stock (in shares)		(39,475)
Repurchase of common stock	(3,001)	$ (1)	(2,457)	(543)
Common stock dividends	(14,757)			(14,757)
Foreign currency translation adjustment	(28,876)				(28,876)
Unrealized gains (losses) on marketable securities, net of tax	9				9
Net income	3,854			3,854
Ending balance (in shares) at Sep. 30, 2021		24,600,479
Ending balance at Sep. 30, 2021	1,695,056	$ 246	1,525,189	167,665	1,956
Beginning balance (in shares) at Dec. 31, 2021		24,592,098
Beginning balance at Dec. 31, 2021	1,713,990	$ 246	1,529,969	174,572	9,203
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	16,209		16,202	7
Issuance of restricted stock, net (in shares)		434,068
Issuance of restricted stock, net	(2,868)	$ 5	(2,873)
Repurchase of common stock (in shares)		(571,789)
Repurchase of common stock	(36,916)	$ (6)	(35,396)	(1,514)
Common stock dividends	(44,702)			(44,702)
Foreign currency translation adjustment	(74,677)				(74,677)
Unrealized gains (losses) on marketable securities, net of tax	(895)				(895)
Net income	28,341			28,341
Ending balance (in shares) at Sep. 30, 2022		24,454,377
Ending balance at Sep. 30, 2022	1,598,482	$ 245	1,507,902	156,704	(66,369)
Beginning balance (in shares) at Jun. 30, 2022		24,637,268
Beginning balance at Jun. 30, 2022	1,651,921	$ 246	1,513,509	166,175	(28,009)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	5,612		5,605	7
Issuance of restricted stock, net (in shares)		(4,138)
Issuance of restricted stock, net	(90)	$ 1	(91)
Repurchase of common stock (in shares)		(178,753)
Repurchase of common stock	(11,944)	$ (2)	(11,121)	(821)
Common stock dividends	(14,749)			(14,749)
Foreign currency translation adjustment	(38,171)				(38,171)
Unrealized gains (losses) on marketable securities, net of tax	(189)				(189)
Net income	6,092			6,092
Ending balance (in shares) at Sep. 30, 2022		24,454,377
Ending balance at Sep. 30, 2022	$ 1,598,482	$ 245	$ 1,507,902	$ 156,704	$ (66,369)