Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other Accrued Liabilities [Abstract]
Accrued expenses	$ 462	$ 842
Self-insurance accruals	679	911
Customer deposits	0	556
Restructuring obligations	0	81
Other accrued liabilities	189	106
Total other accrued liabilities	$ 1,330	$ 2,496