Schedule II - Valuation and Qualifying accounts (Details) (Allowance for Doubtful Accounts [Member], USD $)	12 Months Ended
	Jan. 03, 2015		Dec. 28, 2013		Dec. 29, 2012
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 410,000		$ 487,000		$ 423,000
Charged to Costs and Expenses	71,927		106,485		147,313
Deductions	67,927	[1]	183,485	[1]	83,313	[1]
Balance at End of Period	$ 414,000		$ 410,000		$ 487,000

[1] Uncollectible accounts written off, net of recoveries.