Property and Equipment (Schedule of Property and Equipment by Major Asset Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment	$ 44,004	$ 36,009
Less: Accumulated depreciation and amortization	(11,210)	(10,270)
Property and equipment, net, excluding construction in progress	32,794	25,739
Construction in progress	940	6,557
Property and equipment, net	33,734	32,296
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	2,037	1,995
Building and improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	11,232	5,185
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	19,624	18,135
Computers and software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	2,277	2,373
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	1,045	1,097
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	7,545	6,980
Service equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 244	$ 244