Property and Equipment (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	$ 134,966,000		$ 133,757,000
Less accumulated depreciation	(42,828,000)		(40,282,000)
Total property and equipment, net	92,138,000		93,475,000
Depreciation and amortization expense	2,577,000	$ 2,464,000
Machinery and equipment
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	61,421,000		60,935,000
Leasehold improvements
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	18,886,000		18,655,000
Vehicles
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	5,855,000		5,384,000
Furniture and fixtures
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	955,000		936,000
Building
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	35,387,000		35,387,000
Land
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	11,907,000		11,907,000
Computer hardware and software
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	$ 555,000		$ 553,000