Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Jan. 02, 2016	Dec. 27, 2014
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at beginning of period		$ 33	$ 67	$ 67
Provision		0	0
Deduction	[1]	(4)	(34)	0
Balance at end of period		$ 29	$ 33	$ 67

[1] Deductions related to allowance for doubtful accounts represent amounts written off against the allowance, less recoveries.