Property and Equipment (Schedule of Property and Equipment by Major Asset Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment	$ 35,633	$ 46,332
Less: Accumulated depreciation and amortization	(14,956)	(14,333)
Property and equipment, net, excluding construction in progress	20,677	31,999
Construction in progress	455	975
Property and equipment, net	21,132	32,974
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	1,524	2,090
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	7,264	12,242
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	16,556	21,469
Computers and Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	2,397	2,694
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	1,248	1,208
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	6,400	6,385
Service Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 244	$ 244