Note 12 - Equity Compensation - Summary of Stock Options Outstanding and Exercisable (Details)	12 Months Ended
	Oct. 01, 2016 $ / shares shares
Exercise Price Range 1 [Member]
Exercise Price Lower Range Limit (in dollars per share)	$ 9.34
Exercise Price Upper Range Limit (in dollars per share)	$ 9.34
Number of Shares, Outstanding (in shares) | shares	16,150
Weighted Average Ex. Price Per Share, Outstanding (in dollars per share)	$ 9.34
Weighted Average Remaining Contract Life (yrs), Outstanding (Year)	2 years 146 days
Number of Shares, Exercisable (in shares) | shares	16,150
Weighted Average Ex. Price Per Share, Exercisable (Year)	9 years 124 days
Exercise Price Range 2 [Member]
Exercise Price Lower Range Limit (in dollars per share)	$ 14.90
Exercise Price Upper Range Limit (in dollars per share)	$ 14.90
Number of Shares, Outstanding (in shares) | shares	36,000
Weighted Average Ex. Price Per Share, Outstanding (in dollars per share)	$ 14.90
Weighted Average Remaining Contract Life (yrs), Outstanding (Year)	4 years 36 days
Number of Shares, Exercisable (in shares) | shares	36,000
Weighted Average Ex. Price Per Share, Exercisable (Year)	14 years 328 days
Exercise Price Range 3 [Member]
Exercise Price Lower Range Limit (in dollars per share)	$ 9.34
Exercise Price Upper Range Limit (in dollars per share)	$ 14.90
Number of Shares, Outstanding (in shares) | shares	52,150
Weighted Average Ex. Price Per Share, Outstanding (in dollars per share)	$ 13.18
Weighted Average Remaining Contract Life (yrs), Outstanding (Year)	3 years 219 days
Number of Shares, Exercisable (in shares) | shares	52,150
Weighted Average Ex. Price Per Share, Exercisable (Year)	13 years 65 days