Condensed Consolidated Statement of Stockholders' Equity (Deficit) (unaudited) - USD ($) $ in Thousands	Total	Reclassification Adjustment	Common Stock	Treasury Stock	Additional Paid-in Capital	Additional Paid-in Capital Reclassification Adjustment	Accumulated Deficit
Balance (in shares) at Dec. 31, 2019			49,033,903	0
Balance at Dec. 31, 2019	$ (12,130)		$ 5	$ 0	$ 432,577		$ (444,712)
Increase (Decrease) in Stockholders' Deficit [Roll Forward]
Net loss	(15,969)						(15,969)
Share-based payments	559				559
Balance (in shares) at Mar. 31, 2020			49,033,903	0
Balance at Mar. 31, 2020	(27,540)		$ 5	$ 0	433,136		(460,681)
Balance (in shares) at Dec. 31, 2019			49,033,903	0
Balance at Dec. 31, 2019	(12,130)		$ 5	$ 0	432,577		(444,712)
Increase (Decrease) in Stockholders' Deficit [Roll Forward]
Net loss	(29,119)
Balance (in shares) at Jun. 30, 2020			49,033,903	0
Balance at Jun. 30, 2020	(40,237)		$ 5	$ 0	433,589		(473,831)
Balance (in shares) at Mar. 31, 2020			49,033,903	0
Balance at Mar. 31, 2020	(27,540)		$ 5	$ 0	433,136		(460,681)
Increase (Decrease) in Stockholders' Deficit [Roll Forward]
Net loss	(13,150)						(13,150)
Share-based payments	453				453
Balance (in shares) at Jun. 30, 2020			49,033,903	0
Balance at Jun. 30, 2020	$ (40,237)		$ 5	$ 0	433,589		(473,831)
Balance (in shares) at Dec. 31, 2020	49,156,753		49,156,753	0
Balance at Dec. 31, 2020	$ (31,067)	$ (10,290)	$ 5	$ 0	434,917	$ (10,290)	(465,989)
Increase (Decrease) in Stockholders' Deficit [Roll Forward]
Net loss	(27,907)						(27,907)
Share-based payments (in shares)			62,630
Share-based payments	597				597
Balance (in shares) at Mar. 31, 2021			49,219,383	0
Balance at Mar. 31, 2021	$ (68,667)		$ 5	$ 0	425,224		(493,896)
Balance (in shares) at Dec. 31, 2020	49,156,753		49,156,753	0
Balance at Dec. 31, 2020	$ (31,067)	$ (10,290)	$ 5	$ 0	434,917	$ (10,290)	(465,989)
Increase (Decrease) in Stockholders' Deficit [Roll Forward]
Net loss	$ (157,263)
Balance (in shares) at Jun. 30, 2021	247,038,229		247,038,229	(235,856)
Balance at Jun. 30, 2021	$ 873,888		$ 25	$ (2,256)	1,499,371		(623,252)
Balance (in shares) at Mar. 31, 2021			49,219,383	0
Balance at Mar. 31, 2021	(68,667)		$ 5	$ 0	425,224		(493,896)
Increase (Decrease) in Stockholders' Deficit [Roll Forward]
Net loss	(129,356)						(129,356)
Share-based payments (in shares)			1,118,846	(235,856)
Share-based payments	7,362			$ (2,256)	9,618
Shares issued in business combination (in shares)			196,700,000
Shares issued in business combination	$ 1,064,549		$ 20		1,064,529
Balance (in shares) at Jun. 30, 2021	247,038,229		247,038,229	(235,856)
Balance at Jun. 30, 2021	$ 873,888		$ 25	$ (2,256)	$ 1,499,371		$ (623,252)