CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member] Adoption of ASU	Retained Earnings [Member]	Adoption of ASU	Total
Balances (ASU 2016-02) at Dec. 31, 2018				$ 95		$ 95
Balances at Dec. 31, 2018	$ 213	$ 3,813,678	$ (10,165)		$ (1,877,759)		$ 1,925,967
Increase (Decrease) in Stockholders' Equity
Issuance of shares of Common Stock upon exercise of stock options and settlement of employee restricted stock units and performance shares, net of shares withheld for taxes and shares of Common Stock under the ESPP	3	63,296					63,299
Issuance of shares of Common Stock for services rendered		487					487
Stock compensation		167,029					167,029
Other comprehensive income (loss)			(5,377)				(5,377)
Net income (loss)					446,906		446,906
Balances at Dec. 31, 2019	216	4,044,490	(15,542)		(1,430,758)		2,598,406
Increase (Decrease) in Stockholders' Equity
Issuance of shares of Common Stock upon exercise of stock options and settlement of employee restricted stock units and performance shares, net of shares withheld for taxes and shares of Common Stock under the ESPP	3	110,302					110,305
Issuance of shares of Common Stock for services rendered		546					546
Issuance of shares of Common Stock upon conversion of Convertible Senior Notes		18,999					18,999
Stock compensation		178,527					178,527
Other comprehensive income (loss)			182				182
Net income (loss)					(295,697)		(295,697)
Balances at Dec. 31, 2020	219	4,352,864	(15,360)		(1,726,455)		2,611,268
Increase (Decrease) in Stockholders' Equity
Issuance of shares of Common Stock upon exercise of stock options and settlement of employee restricted stock units and performance shares, net of shares withheld for taxes and shares of Common Stock under the ESPP	2	28,684					28,686
Issuance of shares of Common Stock for services rendered		434					434
Stock compensation		185,129					185,129
Other comprehensive income (loss)			(4,094)				(4,094)
Net income (loss)					948,581		948,581
Balances at Dec. 31, 2021	$ 221	$ 4,567,111	$ (19,454)		$ (777,874)		$ 3,770,004