Note 22 - Quarterly Financial Data (Unaudited) (Detail) - Quarterly Financial Data (USD $)	12 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
For Fiscal 2012
Net sales	$ 76,146,423	$ 52,578,372	$ 52,355,662
Gross profit	23,522,130	18,144,454	19,421,235
Operating income	7,510,065	5,475,173	6,734,021
Net income	5,214,973	3,699,066	4,506,215
Earnings per share
Earnings per share - Basic (in Dollars per share)	$ 1.80	$ 1.33	$ 1.65
Earnings per share - Diluted (in Dollars per share)	$ 1.77	$ 1.30	$ 1.59
Approximation [Member] | First Quarter [Member]
For Fiscal 2012
Gross profit	5,224,000	3,999,000
Approximation [Member] | Second Quarter [Member]
For Fiscal 2012
Gross profit	6,994,000	4,780,000
Approximation [Member] | Third Quarter [Member]
For Fiscal 2012
Gross profit	5,148,000	4,720,000
Approximation [Member] | Fourth Quarter [Member]
For Fiscal 2012
Gross profit	6,157,000	4,646,000
Approximation [Member]
For Fiscal 2012
Gross profit	23,522,000	18,144,000
First Quarter [Member]
For Fiscal 2012
Net sales	20,495,000	11,707,000
Operating income	1,706,000	1,065,000
Net income	1,125,000	717,000
Earnings per share
Earnings per share - Basic (in Dollars per share)	$ 0.40	$ 0.26
Earnings per share - Diluted (in Dollars per share)	$ 0.39	$ 0.25
Second Quarter [Member]
For Fiscal 2012
Net sales	20,933,000	13,454,000
Operating income	2,697,000	1,576,000
Net income	1,825,000	1,050,000
Earnings per share
Earnings per share - Basic (in Dollars per share)	$ 0.63	$ 0.38
Earnings per share - Diluted (in Dollars per share)	$ 0.62	$ 0.37
Third Quarter [Member]
For Fiscal 2012
Net sales	16,937,000	13,695,000
Operating income	1,146,000	1,533,000
Net income	743,000	1,022,000
Earnings per share
Earnings per share - Basic (in Dollars per share)	$ 0.25	$ 0.37
Earnings per share - Diluted (in Dollars per share)	$ 0.25	$ 0.36
Fourth Quarter [Member]
For Fiscal 2012
Net sales	17,782,000	13,722,000
Operating income	1,961,000	1,301,000
Net income	$ 1,522,000	$ 910,000
Earnings per share
Earnings per share - Basic (in Dollars per share)	$ 0.52	$ 0.33
Earnings per share - Diluted (in Dollars per share)	$ 0.51	$ 0.32