Schedule VIII Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) - USD ($)		12 Months Ended
		Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Allowance for Doubtful Accounts [Member]
Balance at beginning of period		$ 148,000	$ 302,000	$ 263,000
Charged to costs and expenses		(9,007)	38,776	128,925
Deductions-describe	[1]		192,776	89,925
Adjustments		1,007
Balance at end of period		140,000	148,000	302,000
Inventory Valuation Reserve [Member]
Balance at beginning of period		570,000	497,000	720,000
Charged to costs and expenses		22,200	73,000	90,803
Deductions-describe	[2]	35,200		313,803
Adjustments		(32,000)
Balance at end of period		$ 525,000	$ 570,000	$ 497,000

[1] Uncollectible accounts written off

[2] Inventory disposed of