CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Noncontrolling Interests [Member]
Beginning balance at Dec. 31, 2020	$ 3,087,553	$ 6,547	$ 844,979	$ (61,452)	$ 2,593,393	$ (299,161)	$ 3,247
Beginning balance (in shares) at Dec. 31, 2020		65,472,000				(5,434,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises	629		21			$ 608
Stock option exercises (in shares)						12,000
Issuance of stock for equity awards, net of forfeitures			(6,206)			$ 6,206
Issuance of stock for equity awards, net of forfeitures (in shares)						113,000
Tax withholdings on equity award vesting	(2,856)					$ (2,856)
Tax withholdings on equity award vesting (in shares)						(52,000)
Amortization of share-based compensation	12,793		12,793
Total comprehensive income (loss), net of taxes	(251,131)			6,789	(257,915)		(5)
Return of investment to noncontrolling interests	(764)						(764)
Ending balance at Sep. 30, 2021	2,846,224	$ 6,547	851,587	(54,663)	2,335,478	$ (295,203)	2,478
Ending balance (in shares) at Sep. 30, 2021		65,472,000				(5,361,000)
Beginning balance at Jun. 30, 2021	3,105,329	$ 6,547	848,081	(57,683)	2,600,208	$ (295,463)	3,639
Beginning balance (in shares) at Jun. 30, 2021		65,472,000				(5,366,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises	124		(9)			$ 133
Stock option exercises (in shares)						2,000
Issuance of stock for equity awards, net of forfeitures			(130)			$ 130
Issuance of stock for equity awards, net of forfeitures (in shares)						3,000
Tax withholdings on equity award vesting	(3)					$ (3)
Amortization of share-based compensation	3,645		3,645
Total comprehensive income (loss), net of taxes	(262,132)			3,020	(264,730)		(422)
Return of investment to noncontrolling interests	(739)						(739)
Ending balance at Sep. 30, 2021	2,846,224	$ 6,547	851,587	(54,663)	2,335,478	$ (295,203)	2,478
Ending balance (in shares) at Sep. 30, 2021		65,472,000				(5,361,000)
Beginning balance at Dec. 31, 2021	2,888,782	$ 6,547	854,512	(25,966)	2,346,439	$ (295,208)	2,458
Beginning balance (in shares) at Dec. 31, 2021		65,472,000				(5,361,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises	3,885		691			$ 3,194
Stock option exercises (in shares)						58,000
Issuance of stock for equity awards, net of forfeitures			(8,977)			$ 8,977
Issuance of stock for equity awards, net of forfeitures (in shares)						162,000
Tax withholdings on equity award vesting	(3,192)					$ (3,192)
Tax withholdings on equity award vesting (in shares)						(50,000)
Amortization of share-based compensation	11,448		11,448
Treasury stock purchases	(22,901)					$ (22,901)
Treasury stock purchases (in shares)						(386,000)
Total comprehensive income (loss), net of taxes	97,947			12,511	84,982		454
Return of investment to noncontrolling interests	(606)						(606)
Ending balance at Sep. 30, 2022	2,975,363	$ 6,547	857,674	(13,455)	2,431,421	$ (309,130)	2,306
Ending balance (in shares) at Sep. 30, 2022		65,472,000				(5,577,000)
Beginning balance at Jun. 30, 2022	2,929,744	$ 6,547	854,781	(21,957)	2,392,330	$ (304,314)	2,357
Beginning balance (in shares) at Jun. 30, 2022		65,472,000				(5,501,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Amortization of share-based compensation	2,893		2,893
Treasury stock purchases	(4,816)					$ (4,816)
Treasury stock purchases (in shares)						(76,000)
Total comprehensive income (loss), net of taxes	47,746			8,502	39,091		153
Return of investment to noncontrolling interests	(204)						(204)
Ending balance at Sep. 30, 2022	$ 2,975,363	$ 6,547	$ 857,674	$ (13,455)	$ 2,431,421	$ (309,130)	$ 2,306
Ending balance (in shares) at Sep. 30, 2022		65,472,000				(5,577,000)