Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Less: Accumulated depreciation	$ (21,121)		$ (21,121)		$ (19,067)
Property and equipment, net	261,562		261,562		293,933
Cash paid to acquire fixed assets			37,264	$ 589
Loss on disposal of property and equipment	62,342	$ 0	62,987	0
Other disposals of construction in process property and equipment			7,864
Initial asset retirement obligation	2,974
Depreciation and amortization expense	659	$ 942	2,529	$ 3,046
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,043		13,043		13,043
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	21,899		21,899		21,899
Building improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,940		8,940		8,940
Computer hardware
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,058		4,058		4,058
Tooling, machinery, and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,435		8,435		5,451
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	583		583		583
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,095		7,095		7,095
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	298		298		298
Construction in process
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 218,332		218,332		$ 251,633
Property and equipment disposed			$ 70,851