Statements of Stockholder's Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
Beginning balance at Dec. 31, 2019	$ 7	$ 18,940	$ (10,391)	$ 8,556
Beginning balance (in shares) at Dec. 31, 2019	68,279
Issuance of common stock, value	$ 1	6,403		6,404
Issuance of common stock (in shares)	4,701
Stock compensation		2,022		2,022
Net loss			(62,321)	(62,321)
Ending balance at Sep. 30, 2020	$ 8	27,365	(72,712)	(45,339)
Ending balance (in shares) at Sep. 30, 2020	72,980
Beginning balance at Jun. 30, 2020	$ 8	26,657	(30,214)	(3,549)
Beginning balance (in shares) at Jun. 30, 2020	72,980
Stock compensation		708		708
Net loss			(42,498)	(42,498)
Ending balance at Sep. 30, 2020	$ 8	27,365	(72,712)	(45,339)
Ending balance (in shares) at Sep. 30, 2020	72,980
Beginning balance at Dec. 31, 2020	$ 17	765,162	(134,441)	630,738
Beginning balance (in shares) at Dec. 31, 2020	168,008
Issuance of common stock, value		3,822		3,822
Issuance of common stock (in shares)	2,136
Common stock issued for exercise of warrants	$ 1	194,797		194,798
Common stock issued for exercise of warrants (in shares)	7,984
Common stock issued under Equity Purchase Agreement		20,000		20,000
Common stock issued under Equity Purchase Agreement (in shares)	3,947
Stock compensation		12,365		12,365
Net loss			(329,217)	(329,217)
Ending balance at Sep. 30, 2021	$ 18	996,146	(463,658)	532,506
Ending balance (in shares) at Sep. 30, 2021	182,075
Beginning balance at Jun. 30, 2021	$ 18	966,837	(367,852)	599,003
Beginning balance (in shares) at Jun. 30, 2021	176,606
Issuance of common stock, value		2,724		2,724
Issuance of common stock (in shares)	1,522
Common stock issued under Equity Purchase Agreement		20,000		20,000
Common stock issued under Equity Purchase Agreement (in shares)	3,947
Stock compensation		6,585		6,585
Net loss			(95,806)	(95,806)
Ending balance at Sep. 30, 2021	$ 18	$ 996,146	$ (463,658)	$ 532,506
Ending balance (in shares) at Sep. 30, 2021	182,075