Long-Term Debt and Financing Liabilities (Long Term Debt) (Details) - USD ($)	Dec. 27, 2015	Dec. 28, 2014
Debt Instrument [Line Items]
Full-recourse factoring liabilities	$ 0	$ 83,000
Other capital leases with maturities through 2020	601,000	249,000
Total long-term debt	70,601,000	65,332,000
Less current portion	239,000	171,000
Total long-term portion	$ 70,362,000	$ 65,161,000
Long-term Debt, Weighted Average Interest Rate	1.90%	1.50%
Two Thousand Thirteen (2013) Senior Secured Credit Facility
Debt Instrument [Line Items]
Long-term revolving credit facility	$ 70,000,000	$ 65,000,000
Two Thousand Thirteen (2013) Senior Secured Credit Facility | Senior Secured Credit Facility
Debt Instrument [Line Items]
Long-term revolving credit facility	70,000,000	$ 65,000,000
Face amount	$ 200,000,000