Schedule II - Valuation and Qualifying accounts (Details) - Allowance for Doubtful Accounts [Member] - USD ($)		12 Months Ended
		Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		$ 414,000	$ 410,000	$ 487,000
Charged to Costs and Expenses		$ 52,144	$ 71,927	$ 106,485
Charged to Other Accounts
Deductions	[1]	$ 16,144	$ 67,927	$ 183,485
Balance at End of Period		$ 450,000	$ 414,000	$ 410,000

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