Line of Credit and Debt Obligations (Details Textual) (USD $)	0 Months Ended	1 Months Ended		12 Months Ended		1 Months Ended
	Apr. 23, 2012	Jul. 31, 2012	Jul. 31, 2011	Dec. 29, 2012	Dec. 31, 2011	Apr. 30, 2012 Revolving line of credit facility [Member]	Jul. 31, 2008 Residential Mortgage [Member]	Dec. 29, 2012 Residential Mortgage [Member]
Line of Credit and Debt Obligations (Textual) [Abstract]
Commitment fee minimum percentage decreased	0.1875%
Commitment fee minimum percentage further decreased	0.10%
Extension of maturity period on amendment of existing credit facility						2 years
Interest rate during period				5.75%
Borrowing interest rate				3.00%
Mortgage agreement, borrowed amount				$ 5,302,000	$ 7,452,000			$ 13,500,000
Interest rate description for mortgage							Initially bears interest at the rate of 7.18% per annum, which rate will be reset after five years to 3.03% over the then weekly average yield of five-year U.S. Dollar Interest Rate Swaps as published by the Federal Reserve
Mortgage bears interest rate initially								7.18%
Mortgage bears interest rate after five year								3.03%
Line of Credit and Debt Obligations (Additional Textual) [Abstract]
Maturity date	Apr. 30, 2014
Limited borrowing amount				7,500,000
Borrowing base				13,500,000
Amortization period of mortgage loan for sixty month				20 years
Monthly principal and interest payments description				A twenty year amortization for the first sixty months and fifteen year amortization thereafter. The remaining principal balance of the mortgage and any accrued but unpaid interest will be due on August 1, 2018
Amortization period of mortgage loan after sixty month				15 years
Maximum percentage of outstanding debt for pre payment				20.00%
Debt instrument pre payment		1,400,000	1,950,000
Early Repayment Percent of Outstanding Debt		20.00%	20.00%
Estimated fair value of debt				$ 5,700,000	$ 8,300,000