Note 18 - Information on Industry Segments (Details)	12 Months Ended
	Oct. 03, 2015 USD ($)	Sep. 27, 2014 USD ($)	Sep. 28, 2013 USD ($)
UNITED STATES
Net sales	$ 56,470,245	$ 49,804,659	$ 66,222,867
Property and equipment, net	3,927,018	4,181,361	4,515,702
Goodwill	1,924,131	1,924,131	1,924,131
Intangibles, net	309,164	303,456	326,465
CANADA
Net sales	7,704,410	5,922,543	7,506,498
Property and equipment, net	609,086	706,735	620,833
Intangibles, net	1,905,598	2,556,804	3,103,884
Other Areas [Member]
Net sales	140,341	130,173	104,184
Goodwill	2,006,151	2,367,712	2,563,415
Medical [Member] | Operating Segments [Member]
Net sales	47,810,988	42,334,896	47,531,676
Operating profit	6,342,253	3,966,605	5,446,274
Identifiable assets	20,886,470	22,221,526	22,512,205
Depreciation and Amortization, Operating	977,922	1,069,882	987,851
Capital Expenditures	428,206	595,002	476,928
Custom Products [Member] | Operating Segments [Member]
Net sales	16,504,008	13,522,479	26,301,873
Operating profit	(234,948)	257,997	2,509,105
Identifiable assets	7,172,290	3,991,467	5,769,403
Depreciation and Amortization, Operating	243,342	218,234	296,754
Capital Expenditures	226,659	75,843	80,935
Operating Segments [Member]
Net sales	64,314,996	55,857,375	73,833,549
Operating profit	6,107,305	4,224,602	7,955,379
Corporate, Non-Segment [Member]
Corporate expense	(849,853)	(614,022)	(660,940)
Identifiable assets	4,122,862	9,633,841	8,095,020
Depreciation and Amortization, Operating	514	409	409
Net sales	64,314,996	55,857,375	73,833,549
Operating profit	5,257,452	3,610,580	7,294,439
Corporate expense	16,378,531	15,179,058	16,269,453
Other income (expense)	407,946	18,187	(9,022)
Income before income taxes	5,665,398	3,628,767	7,285,417
Identifiable assets	32,181,622	35,846,834	36,376,628
Depreciation and Amortization, Operating	1,221,778	1,288,525	1,285,014
Capital Expenditures	654,865	670,845	557,863
Property and equipment, net	4,536,104	4,888,096	5,136,535
Goodwill	3,930,282	4,291,843	4,487,546
Intangibles, net	$ 2,214,762	$ 2,860,260	$ 3,430,349