Note 10 - Operations and Industry Segments (Detail) - Information on Industry Segments (USD $)	3 Months Ended		6 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013	Mar. 31, 2012
Net sales	$ 16,622,891	$ 20,932,807	$ 38,283,415	$ 41,427,428
Operating profit	1,954,486	2,864,065	4,207,674	4,669,754
Other expense	(27,208)	(10,965)	(37,657)	(25,016)
Income before income taxes	1,785,737	2,685,998	3,852,446	4,377,966
Medical [Member]
Net sales	12,034,860	13,738,805	22,891,827	23,174,097
Operating profit	1,783,907	2,073,903	2,312,746	2,707,732
Custom Products [Member]
Net sales	4,588,031	7,194,002	15,391,588	18,253,331
Operating profit	170,579	790,162	1,894,928	1,962,022
Corporate [Member]
Corporate expense	$ (141,541)	$ (167,102)	$ (317,571)	$ (266,772)