Note 12 - Summary of Activity Under Two Stock Option Plans (Details) - $ / shares	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013	Sep. 29, 2012
Shares Available for Grant (in shares)	190,500	190,500	(190,500)	190,500
Number of Shares, Outstanding (in shares)	73,307	92,992	(119,405)	143,821
Weighted Average Ex. Price Per Share, Outstanding (in dollars per share)		$ 11.53	$ (11.30)	$ 10.44
Number of Shares, Exercisable (in shares)	73,307	89,592	(107,605)	123,621
Weighted Average Ex. Price Per Share, Exercisable (in dollars per share)	$ 12.16	$ 11.40	$ (10.90)	$ 9.71
Exercised (in shares)	(19,685)	(26,091)	(24,416)
Shares Available for Grant (in shares)	(190,500)	(190,500)	190,500	(190,500)
Number of Shares, Outstanding (in shares)	(73,307)	(92,992)	119,405	(143,821)
Weighted Average Ex. Price Per Share, Outstanding (in dollars per share)		$ (11.53)	$ 11.30	$ (10.44)
Number of Shares, Exercisable (in shares)	(73,307)	(89,592)	107,605	(123,621)
Weighted Average Ex. Price Per Share, Exercisable (in dollars per share)	$ (12.16)	$ (11.40)	$ 10.90	$ (9.71)
Expired Unexercised (in shares)		(322)