Property, Plant and Equipment (Details) - Property, Plant and Equipment - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 4,508	$ 4,508
Less accumulated depreciation	2,902	2,721
Property, plant and equipment, net	1,606	1,787
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 2,675	2,675
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Depreciable Lives	15 years
Property, plant and equipment, at cost	$ 1,833	$ 1,833
Minimum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Depreciable Lives	5 years
Maximum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Depreciable Lives	12 years