CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock Issued [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Additional Paid-In Capital [Member] Cumulative Effect Period Of Adoption Adjustment [Member] Revision Of Prior Period Accounting Standards Update Adjustment [Member]	Retained Earnings (Accumulated Deficit) [Member]	Retained Earnings (Accumulated Deficit) [Member] Cumulative Effect Period Of Adoption Adjustment [Member] Revision Of Prior Period Accounting Standards Update Adjustment [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balance, Shares at Dec. 31, 2020		274,558,000	(134,616,000)
Beginning Balance at Dec. 31, 2020	$ 1,666,243	$ 2,745	$ (870,558)	$ 1,902,776		$ 633,118		$ (1,838)
Beginning Balance (ASU 2020-06 [Member]) at Dec. 31, 2020					$ 0		$ 0
Stock-based compensation				25,861
Common stock issued under stock compensation plans, net of shares withheld for employee taxes, Shares		2,139,000
Common stock issued under stock compensation plans, net of shares withheld for employee taxes		$ 21		(13,988)
Issuance of treasury stock, Shares			33,000
Issuance of treasury stock	534		$ 465	69
Purchase of treasury stock, Shares			(6,397,000)
Purchase of treasury stock			$ (108,953)
Accelerated share repurchase program, Shares			(13,146,000)
Accelerated share repurchase program			$ (234,269)	34,269
Warrants issued				3,110
Net income (loss)						47,163
Foreign currency translation adjustments, net	285							(285)
Unrecognized loss on derivatives qualifying as cash flow hedges, net of tax								(1,119)
Ending Balance, Shares at Sep. 30, 2021		276,697,000	(154,126,000)
Ending Balance at Sep. 30, 2021	1,418,587	$ 2,766	$ (1,213,315)	1,952,097		680,281		(3,242)
Ending Balance (ASU 2020-06 [Member]) at Sep. 30, 2021							0
Beginning Balance, Shares at Dec. 31, 2020		274,558,000	(134,616,000)
Beginning Balance at Dec. 31, 2020	$ 1,666,243	$ 2,745	$ (870,558)	1,902,776		633,118		(1,838)
Beginning Balance (ASU 2020-06 [Member]) at Dec. 31, 2020					0		0
Common stock issued under stock compensation plans, net of shares withheld for employee taxes, Shares	2,200,000
Ending Balance, Shares at Dec. 31, 2021	276,705,000	276,705,000	(160,591,000)
Ending Balance at Dec. 31, 2021	$ 1,408,138	$ 2,766	$ (1,321,805)	1,962,386		767,556		(2,765)
Ending Balance (ASU 2020-06 [Member]) at Dec. 31, 2021					(38,918)		12,477
Beginning Balance, Shares at Jun. 30, 2021		276,668,000	(151,657,000)
Beginning Balance at Jun. 30, 2021	1,393,474	$ 2,766	$ (1,174,498)	1,903,542		664,101		(2,437)
Beginning Balance (ASU 2020-06 [Member]) at Jun. 30, 2021					0
Stock-based compensation				8,777
Common stock issued under stock compensation plans, net of shares withheld for employee taxes, Shares		29,000
Common stock issued under stock compensation plans, net of shares withheld for employee taxes		$ 0		(76)
Issuance of treasury stock, Shares			0
Issuance of treasury stock			$ 0	0
Purchase of treasury stock, Shares			0
Purchase of treasury stock			$ 0
Accelerated share repurchase program, Shares			(2,469,000)
Accelerated share repurchase program			$ (38,817)	38,817
Warrants issued				1,037
Net income (loss)						16,180
Foreign currency translation adjustments, net	(805)							(805)
Unrecognized loss on derivatives qualifying as cash flow hedges, net of tax								0
Ending Balance, Shares at Sep. 30, 2021		276,697,000	(154,126,000)
Ending Balance at Sep. 30, 2021	$ 1,418,587	$ 2,766	$ (1,213,315)	1,952,097		680,281		(3,242)
Ending Balance (ASU 2020-06 [Member]) at Sep. 30, 2021							0
Beginning Balance, Shares at Dec. 31, 2021	276,705,000	276,705,000	(160,591,000)
Beginning Balance at Dec. 31, 2021	$ 1,408,138	$ 2,766	$ (1,321,805)	1,962,386		767,556		(2,765)
Beginning Balance (ASU 2020-06 [Member]) at Dec. 31, 2021					(38,918)		12,477
Stock-based compensation				24,503
Common stock issued under stock compensation plans, net of shares withheld for employee taxes, Shares	2,900,000	2,895,000
Common stock issued under stock compensation plans, net of shares withheld for employee taxes		$ 28		(32,707)
Issuance of treasury stock, Shares			0
Issuance of treasury stock	$ 0		$ 0	0
Purchase of treasury stock, Shares			(9,749,000)
Purchase of treasury stock			$ (177,031)
Accelerated share repurchase program, Shares			0
Accelerated share repurchase program			$ 0	0
Warrants issued				8,295
Net income (loss)						(26,641)
Accounting Standards Update [Extensible List]	Stock-based compensation
Foreign currency translation adjustments, net	$ (808)							(808)
Unrecognized loss on derivatives qualifying as cash flow hedges, net of tax								(313)
Ending Balance, Shares at Sep. 30, 2022	279,600,000	279,600,000	(170,340,000)
Ending Balance at Sep. 30, 2022	$ 1,177,023	$ 2,794	$ (1,498,836)	1,923,559		753,392		(3,886)
Beginning Balance, Shares at Jun. 30, 2022		279,175,000	(168,383,000)
Beginning Balance at Jun. 30, 2022	1,196,348	$ 2,790	$ (1,465,177)	1,923,805		738,864		(3,934)
Beginning Balance (ASU 2020-06 [Member]) at Jun. 30, 2022					$ 0		$ 0
Stock-based compensation				4,553
Common stock issued under stock compensation plans, net of shares withheld for employee taxes, Shares		425,000
Common stock issued under stock compensation plans, net of shares withheld for employee taxes		$ 4		(4,799)
Issuance of treasury stock, Shares			0
Issuance of treasury stock			$ 0	0
Purchase of treasury stock, Shares			(1,957,000)
Purchase of treasury stock			$ (33,659)
Accelerated share repurchase program, Shares			0
Accelerated share repurchase program			$ 0	0
Warrants issued				0
Net income (loss)						14,528
Foreign currency translation adjustments, net	$ 59							59
Unrecognized loss on derivatives qualifying as cash flow hedges, net of tax								(11)
Ending Balance, Shares at Sep. 30, 2022	279,600,000	279,600,000	(170,340,000)
Ending Balance at Sep. 30, 2022	$ 1,177,023	$ 2,794	$ (1,498,836)	$ 1,923,559		$ 753,392		$ (3,886)