Fair Values of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Mar. 22, 2014	Dec. 28, 2013	Mar. 23, 2013	Dec. 29, 2012
Financial assets, Carrying Amount
Cash and cash equivalents, Carrying Amount	$ 3,027	$ 2,346	$ 1,913	$ 2,544
Time deposits, Carrying Amount	1,450	1,700	1,950
Financial liabilities, Carrying Amount
Notes payable, Carrying Amount	13,871		14,672
Current portion of Long-term debt, Carrying Amount	1,569		2,546
Long-term debt, Carrying Amount	4,551	4,946	4,620
Fair Value, Inputs, Level 1 [Member]
Financial assets, Fair Value
Cash and cash equivalents, Fair Value	3,027		1,913
Time deposits, Fair Value	1,450		1,950
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	13,871		14,672
Current portion of Long-term debt, Fair Value	1,569		2,546
Long-term debt, Fair Value	4,551		4,620
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