Detail of Certain Balance Sheet Accounts - Schedule of Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrual for known contingencies	$ 472	$ 747
Customer prepayments	37	150
Deferred rent	64	140
Current portion of capital leases	62	229
Federal and state income taxes payable	54
Insurance note	378
Accrued interest and other		4
Other current liabilities	$ 1,067	$ 1,270