Note 8 - Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Apr. 02, 2016	Mar. 28, 2015
Numerator for basic and diluted earnings per share:
Net income	$ 757,749	$ 773,438	$ 1,900,501	$ 1,743,763
Denominator for basic earnings per share:
Weighted average shares (in shares)	2,728,633	2,979,097	2,727,380	2,969,895
Effect of dilutive securities:
Employee stock options (in shares)	26,476	26,854	26,110	30,982
Weighted average shares outstanding:
Adjusted weighted average shares and assumed conversions (in shares)	2,755,109	3,005,951	2,753,490	3,000,877
Net income per share of common stock:
Basic (in dollars per share)	$ 0.28	$ 0.26	$ 0.70	$ 0.59
Diluted (in dollars per share)	$ 0.28	$ 0.26	$ 0.69	$ 0.58