Note 14 - Earnings Per Share of Common Stock - Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended								12 Months Ended
	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Oct. 03, 2015	Jul. 01, 2015	Mar. 31, 2015	Dec. 29, 2014	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Numerator for basic and diluted earnings per share:
Net income	$ 1,412,000	$ 935,000	$ 758,000	$ 1,143,000	$ 1,287,000	$ 963,000	$ 773,000	$ 970,000	$ 4,247,331	$ 3,993,398	$ 2,590,767
Denominator for basic earnings per share:
Weighted average shares (in shares)									2,734,862	2,978,107	2,948,992
Effect of dilutive securities:
Employee stock options (in shares)									23,257	27,975	44,341
Weighted average shares outstanding:
Adjusted weighted average shares and assumed conversions (in shares)									2,758,119	3,006,082	2,993,333
Net income per share:
Basic (in dollars per share)	$ 0.51	$ 0.34	$ 0.28	$ 0.42	$ 0.43	$ 0.32	$ 0.26	$ 0.33	$ 1.55	$ 1.34	$ 0.88
Diluted (in dollars per share)	$ 0.51	$ 0.34	$ 0.28	$ 0.42	$ 0.43	$ 0.32	$ 0.26	$ 0.32	$ 1.54	$ 1.33	$ 0.87