CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY (DEFICIT) - USD ($) $ in Thousands	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Earnings (Deficit)	Total
Balance at Dec. 31, 2021	$ 1,492,174	$ (1,262)	$ (9,045,735)	$ (7,554,823)
Increase (Decrease) in Stockholder's Equity
Non-cash, stock-based compensation	8,383			8,383
Change in unrealized holding gains (losses) on available-for-sale debt securities, net		(76)		(76)
Deferred income tax (expense) benefit attributable to other comprehensive income (loss)		21		21
Foreign currency translation		(187)		(187)
Net income (loss)			444,411	444,411
Other	13			13
Balance at Mar. 31, 2022	1,500,570	(1,504)	(8,601,324)	(7,102,258)
Balance at Dec. 31, 2022	1,532,906	(2,445)	(7,234,990)	(5,704,529)
Increase (Decrease) in Stockholder's Equity
Non-cash, stock-based compensation	6,131			6,131
Change in unrealized holding gains (losses) on available-for-sale debt securities, net		12		12
Deferred income tax (expense) benefit attributable to other comprehensive income (loss)		(13)		(13)
Foreign currency translation		136		136
Net income (loss)			433,283	433,283
Balance at Mar. 31, 2023	$ 1,539,037	$ (2,310)	$ (6,801,707)	$ (5,264,980)