Property, Plant and Equipment, net (Details) - Property, plant and equipment - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 2,984	$ 2,864
Less accumulated depreciation	698	572
Net property, plant and equipment	2,286	2,292
Machinery Fixture And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	2,972	2,839
Leaseholds and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 12	$ 25