Summary of Significant Accounting Policies (Details 4) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Summary Of Significant Accounting Policies [Line Items]
Total cost	$ 6,400	$ 11,556
Accumulated depreciation and amortization	(3,672)	(10,741)
Property and equipment, net	2,728	815
Machinery and Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Total cost	3,293	6,105
Buildings [Member]
Summary Of Significant Accounting Policies [Line Items]
Total cost	1,686
Information Systems [Member]
Summary Of Significant Accounting Policies [Line Items]
Total cost	819	819
Land and land Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Total cost	594
Furniture and Fixtures [Member]
Summary Of Significant Accounting Policies [Line Items]
Total cost	8	8
Leasehold Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Total cost		$ 4,624