Fair Values of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Jul. 13, 2013	Dec. 29, 2012	Jul. 14, 2012	Dec. 31, 2011
Financial assets, Carrying Amount
Cash and cash equivalents, Carrying Amount	$ 1,896	$ 2,544	$ 1,615	$ 3,821
Time deposits, Carrying Amount	1,950	1,200	1,200
Financial liabilities, Carrying Amount
Notes payable, Carrying Amount	16,930		12,671
Current portion of Long-term debt, Carrying Amount	2,557		2,000
Long-term debt, Carrying Amount	3,338	3,500	4,000
Fair Value, Inputs, Level 1 [Member]
Financial assets, Fair Value
Cash and Cash Equivalents, Fair Value	1,896		1,615
Time deposits, Fair Value	1,950		1,200
Financial liabilities, Fair Value
Notes payable, 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
Notes payable, Fair Value	16,930		12,671
Current Portion of Long-term Debt, Fair Value	2,557		2,000
Long-term Debt, Fair Value	3,338		4,000
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
Notes payable, Fair Value	0		0
Current Portion of Long-term Debt, Fair Value	0		0
Long-term Debt, Fair Value	$ 0		$ 0