CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Non-Controlling Interest
Beginning balance at Dec. 31, 2019	$ (136,622)	$ 78	$ 4,310	$ 6	$ (145,530)	$ 4,514
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	1,612				(1,978)	3,590
Foreign currency translation gain (loss)	1			1
Distributions	(1,000)					(1,000)
Ending balance at Jun. 30, 2020	(136,009)	78	4,310	7	(147,508)	7,104
Beginning balance at Mar. 31, 2020	(138,083)	78	4,310	5	(147,774)	5,298
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	3,072				266	2,806
Foreign currency translation gain (loss)	2			2
Distributions	(1,000)					(1,000)
Ending balance at Jun. 30, 2020	(136,009)	78	4,310	7	(147,508)	7,104
Beginning balance at Dec. 31, 2020	127,104	103	270,800	44	(143,843)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(33,507)				(33,507)
Issuance of common stock	64,269	2	64,267
Foreign currency translation gain (loss)	(27)			(27)
Stock-based compensation	35,006		35,006
Repurchase of outstanding warrants	(26,894)		(26,894)
Repurchase of common stock	(1,251)		(1,251)
Ending balance at Jun. 30, 2021	164,700	105	341,928	17	(177,350)	0
Beginning balance at Mar. 31, 2021	125,964	103	284,470	12	(158,621)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(18,729)				(18,729)
Issuance of common stock	64,269	2	64,267
Foreign currency translation gain (loss)	5			5
Stock-based compensation	21,336		21,336
Repurchase of outstanding warrants	(26,894)		(26,894)
Repurchase of common stock	(1,251)		(1,251)
Ending balance at Jun. 30, 2021	$ 164,700	$ 105	$ 341,928	$ 17	$ (177,350)	$ 0