Property and Equipment (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	$ 128,192,000		$ 128,192,000		$ 125,852,000
Less accumulated depreciation	(35,256,000)		(35,256,000)		(30,319,000)
Total property and equipment, net	92,936,000		92,936,000		95,533,000
Depreciation and amortization expense	2,479,000	$ 3,302,000	4,943,000	$ 3,869,000
Machinery and equipment
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	57,682,000		57,682,000		55,528,000
Leasehold improvements
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	17,929,000		17,929,000		17,832,000
Vehicles
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	3,532,000		3,532,000		3,447,000
Furniture and fixtures
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	855,000		855,000		851,000
Building
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	34,134,000		34,134,000		34,134,000
Land
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	11,907,000		11,907,000		11,907,000
Property held under capital leases
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	1,607,000		1,607,000		1,607,000
Computer hardware and software
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	$ 546,000		$ 546,000		$ 546,000