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]	Treasury Stock [Member]
Beginning balance, value at Dec. 31, 2019	$ 526,628	$ 613	$ 257,501	$ 576,166		$ (307,652)
Beginning balance, shares at Dec. 31, 2019		61,350				3,689
Vesting of restricted stock		$ 5	(5)
Vesting of restricted stock, shares		511
Stock-based compensation	100,412		100,412
Repurchases of common stock	(114,850)					$ (114,850)
Repurchases of common stock, shares						433
Net income	143,453			143,453
Ending balance, value at Dec. 31, 2020	655,643	$ 618	357,908	719,619		$ (422,502)
Ending balance, shares at Dec. 31, 2020		61,861				4,122
Vesting of restricted stock		$ 5	(5)
Vesting of restricted stock, shares		437
Stock-based compensation	107,691		107,691
Repurchases of common stock	(65,580)					$ (65,580)
Repurchases of common stock, shares						164
Net income	195,960			195,960
Ending balance, value at Dec. 31, 2021	893,714	$ 623	465,594	915,579		$ (488,082)
Ending balance, shares at Dec. 31, 2021		62,298				4,286
Vesting of restricted stock		$ 2	(2)
Vesting of restricted stock, shares		220
Stock-based compensation	111,030		111,030
Repurchases of common stock	(99,823)					$ (99,823)
Repurchases of common stock, shares						365
Net income	281,389			281,389
Other comprehensive income (loss), net of tax	(3,703)				$ (3,703)
Ending balance, value at Dec. 31, 2022	$ 1,182,607	$ 625	$ 576,622	$ 1,196,968	$ (3,703)	$ (587,905)
Ending balance, shares at Dec. 31, 2022		62,518				4,651