Fair Values of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Financial assets, Fair Value
Cash and Cash Equivalents, Fair Value	$ 2,346	$ 2,544	$ 3,821	$ 1,536
Time deposits, Fair Value	1,700	1,200
Financial liabilities, Fair Value
Note payable and Short-term debt, Fair Value	21,700	17,070
Current portion of Long-term debt, Fair Value	1,563	2,000
Long-term debt, Fair Value	4,946	3,500
Fair Value, Inputs, Level 1 [Member]
Financial assets, Fair Value
Cash and Cash Equivalents, Fair Value	2,346	2,544
Time deposits, Fair Value	1,700	1,200
Financial liabilities, Fair Value
Note payable and Short-term debt, Fair Value	0	0
Current portion of Long-term debt, Fair Value	0	0
Long-term debt, Fair Value	0	0
Fair Value, Inputs, Level 2 [Member]
Financial assets, Fair Value
Cash and Cash Equivalents, Fair Value	0	0
Time deposits, Fair Value	0	0
Financial liabilities, Fair Value
Note payable and Short-term debt, Fair Value	21,700	17,070
Current portion of Long-term debt, Fair Value	1,563	2,000
Long-term debt, Fair Value	4,946	3,500
Fair Value, Inputs, Level 3 [Member]
Financial assets, Fair Value
Cash and Cash Equivalents, Fair Value	0	0
Time deposits, Fair Value	0	0
Financial liabilities, Fair Value
Note payable and Short-term debt, Fair Value	0	0
Current portion of Long-term debt, Fair Value	0	0
Long-term debt, Fair Value	$ 0	$ 0