Property and Equipment (Schedule of Property and Equipment by Major Asset Class) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment	$ 39,689	$ 46,332
Less: Accumulated depreciation and amortization	(15,581)	(14,333)
Property and equipment, net, excluding construction in progress	24,108	31,999
Construction in progress	390	975
Property and equipment, net	24,498	32,974
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	1,583	2,090
Building and building improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	7,682	12,242
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	16,750	21,469
Computer and software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	2,454	2,694
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	1,281	1,208
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	491	646
Right Of Use Assets - Finance Leases [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	9,204	5,739
Service Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 244	$ 244