CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2020	$ 140	$ 1,895,519	$ (21,071)	$ (1,131,306)	$ 743,282
Balance (in shares) at Dec. 31, 2020	140,366
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 0	0	0	(28,597)	(28,597)
Change in unrealized gains (losses), net of tax	0	0	(11,486)	0	(11,486)
Foreign currency translation	0	0	(111)	0	(111)
Issuance of common stock in connection with employee stock plans	$ 1	11,563	0	0	11,564
Issuance of common stock in connection with employee stock plans (in shares)	1,132
Issuance of warrants	$ 0	89,752	0	0	89,752
Purchase of note hedges	0	(136,620)	0	0	(136,620)
Stock-based compensation expense	0	120,678	0	0	120,678
Payments of tax withholdings related to vesting of employee stock awards and exercise of employee stock options	$ 0	(16,725)	0	0	(16,725)
Payments of tax withholdings related to vesting of employee stock awards and exercise of employee stock options (in shares)	(288)
Balance at Dec. 31, 2021	$ 141	1,964,167	(32,668)	(1,159,903)	771,737
Balance (in shares) at Dec. 31, 2021	141,210
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 0	0	0	(269,722)	(269,722)
Change in unrealized gains (losses), net of tax	0	0	(24,395)	0	(24,395)
Foreign currency translation	0	0	(417)	0	(417)
Issuance of common stock in connection with employee stock plans	$ 1	6,372	0	0	6,373
Issuance of common stock in connection with employee stock plans (in shares)	1,194
Stock-based compensation expense	$ 0	100,264	0	0	100,264
Payments of tax withholdings related to vesting of employee stock awards and exercise of employee stock options	$ 0	(10,953)	0	0	(10,953)
Payments of tax withholdings related to vesting of employee stock awards and exercise of employee stock options (in shares)	(346)
Balance at Dec. 31, 2022	$ 142	2,059,850	(57,480)	(1,429,625)	572,887
Balance (in shares) at Dec. 31, 2022	142,058
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 0	0	0	(366,286)	(366,286)
Change in unrealized gains (losses), net of tax	0	0	24,484	0	24,484
Foreign currency translation	0	0	351	0	351
Issuance of common stock in connection with employee stock plans	$ 2	49,439	0	0	49,441
Issuance of common stock in connection with employee stock plans (in shares)	2,283
Stock-based compensation expense	$ 0	105,809	0	0	105,809
Balance at Dec. 31, 2023	$ 144	$ 2,215,098	$ (32,645)	$ (1,795,911)	$ 386,686
Balance (in shares) at Dec. 31, 2023	144,341