Financing Agreement (Details) (USD $)	3 Months Ended	12 Months Ended	3 Months Ended				0 Months Ended	3 Months Ended
	Mar. 30, 2013 Amended Credit Facility	Dec. 29, 2012 Amended Credit Facility	Mar. 30, 2013 Amended Credit Facility Period through September 30, 2015	Mar. 30, 2013 Amended Credit Facility Period ending September 30, 2016	Mar. 30, 2013 Amended Credit Facility Minimum	Mar. 30, 2013 Amended Credit Facility Maximum	Feb. 20, 2013 Fourth Amendment	Mar. 30, 2013 Fourth Amendment Period ending March 30, 2013	Mar. 30, 2013 Fourth Amendment Period ending June 29, 2013	Mar. 30, 2013 Fourth Amendment Period through ending on September 30, 2016
Financing agreement
Annual capital expenditure allowed under credit facility	$ 2,000,000
Trailing period under financial covenants							12 months
Trailing twelve months earnings before taxes financial covenant, subsequent to amendment								(100,000)	(300,000)	250,000
Maximum borrowing capacity	15,000,000
Excess borrowing base availability each year as per financial covenant					3,000,000
Base rate	three-month LIBOR
Spread over base rate (as a percent)					1.50%	2.50%
One-time origination fee	150,000
Unused line fee (as a percent)		0.25%			0.25%	0.375%
Effective interest rate (as a percent)		2.375%
Period of notice for termination or reduction of credit facility	90 days
Termination fee as percentage of maximum line amount			0.25%	0.00%
Borrowings outstanding	0
Total availability under credit facility	$ 12,100,000