CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Preferred stock	Common stock	Additional paid-in capital	Accumulated Other Comprehensive Loss	Accumulated deficit
Beginning balance (in shares) at Dec. 31, 2020		0	369,797,524
Beginning balance at Dec. 31, 2020	$ 56,787	$ 0	$ 37	$ 295,065	$ 0	$ (238,315)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and release of restricted stock units (in shares)			268,426
Issuance of common stock upon exercise of stock options and release of restricted stock units	12			12
Issuance of common stock upon exercise of warrants and other, net (in shares)			8,741,863
Issuance of common stock upon exercise of warrants and other, net	172,519			172,519
Net cash contributions from follow-on offering (in shares)			17,000,000
Net cash contributions from follow-on offering	402,240		$ 2	402,238
Stock-based compensation	10,945			10,945
Net income (loss)	(53,592)					(53,592)
Ending balance (in shares) at Mar. 31, 2021		0	395,807,813
Ending balance at Mar. 31, 2021	588,911	$ 0	$ 39	880,779	0	(291,907)
Beginning balance (in shares) at Dec. 31, 2020		0	369,797,524
Beginning balance at Dec. 31, 2020	56,787	$ 0	$ 37	295,065	0	(238,315)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive loss	0
Net income (loss)	(133,187)
Ending balance (in shares) at Jun. 30, 2021		0	396,671,443
Ending balance at Jun. 30, 2021	534,812	$ 0	$ 39	906,275	0	(371,502)
Beginning balance (in shares) at Mar. 31, 2021		0	395,807,813
Beginning balance at Mar. 31, 2021	588,911	$ 0	$ 39	880,779	0	(291,907)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and release of restricted stock units (in shares)			235,054
Issuance of common stock upon exercise of stock options and release of restricted stock units	97			97
Issuance of common stock upon exercise of warrants and other, net (in shares)			628,576
Issuance of common stock upon exercise of warrants and other, net	9,625			9,625
Net cash contributions from follow-on offering	0
Stock-based compensation	15,774			15,774
Other comprehensive loss	0
Net income (loss)	(79,595)					(79,595)
Ending balance (in shares) at Jun. 30, 2021		0	396,671,443
Ending balance at Jun. 30, 2021	534,812	$ 0	$ 39	906,275	0	(371,502)
Beginning balance (in shares) at Dec. 31, 2021		0	408,753,837
Beginning balance at Dec. 31, 2021	623,700	$ 0	$ 40	1,043,600	(248)	(419,692)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and release of restricted stock units (in shares)			879,936
Issuance of common stock upon exercise of stock options and release of restricted stock units	236			236
Stock-based compensation	77,925			77,925
Other comprehensive loss	(2,046)				(2,046)
Other, net	(64)			(64)
Net income (loss)	(148,113)					(148,113)
Ending balance (in shares) at Mar. 31, 2022		0	409,633,773
Ending balance at Mar. 31, 2022	551,638	$ 0	$ 40	1,121,697	(2,294)	(567,805)
Beginning balance (in shares) at Dec. 31, 2021		0	408,753,837
Beginning balance at Dec. 31, 2021	$ 623,700	$ 0	$ 40	1,043,600	(248)	(419,692)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and release of restricted stock units (in shares)	9,450,757
Other comprehensive loss	$ (2,623)
Net income (loss)	(208,724)
Ending balance (in shares) at Jun. 30, 2022		0	419,133,309
Ending balance at Jun. 30, 2022	504,887	$ 0	$ 41	1,136,133	(2,871)	(628,416)
Beginning balance (in shares) at Mar. 31, 2022		0	409,633,773
Beginning balance at Mar. 31, 2022	551,638	$ 0	$ 40	1,121,697	(2,294)	(567,805)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and release of restricted stock units (in shares)			9,499,536
Issuance of common stock upon exercise of stock options and release of restricted stock units	617		$ 1	616
Stock-based compensation	13,820			13,820
Other comprehensive loss	(577)				(577)
Net income (loss)	(60,611)					(60,611)
Ending balance (in shares) at Jun. 30, 2022		0	419,133,309
Ending balance at Jun. 30, 2022	$ 504,887	$ 0	$ 41	$ 1,136,133	$ (2,871)	$ (628,416)