Consolidated Statements of Comprehensive Income (Unaudited) (USD $)
 3 Months Ended 9 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Net sales $ 18,621,212 $ 16,937,129 $ 56,904,627 $ 58,364,557
Cost of goods sold 12,396,380 11,789,275 38,760,002 40,999,334
Gross profit 6,224,832 5,147,854 18,144,625 17,365,223
Selling and marketing expenses 2,903,918 2,658,221 8,166,201 7,731,704
Research and development expenses 311,030 279,268 978,777 780,474
General and administrative expenses 1,195,663 1,064,464 3,295,323 3,304,162
4,410,611 4,001,953 12,440,301 11,816,340
Operating income 1,814,221 1,145,901 5,704,324 5,548,883
Non-operating income (expense):        
Interest expense (3,160) (4,337) (12,002) (12,970)
Other 823 (18,110) (27,992) (34,493)
Net non-operating (expense) income (2,337) (22,447) (39,994) (47,463)
Income before income taxes 1,811,884 1,123,454 5,664,330 5,501,420
Provision for income taxes 589,000 380,000 1,844,000 1,808,000
Net income 1,222,884 743,454 3,820,330 3,693,420
Other comprehensive income (loss), after tax:        
Foreign currency translation (loss) gain (371,513) (216,030) (714,194) (83,124)
Comprehensive income $ 851,371 $ 527,424 $ 3,106,136 $ 3,610,296
Net income per share of common stock - Note 9:        
Basic (in Dollars per share) $ 0.41 $ 0.25 $ 1.30 $ 1.28
Diluted (in Dollars per share) $ 0.41 $ 0.25 $ 1.28 $ 1.26
Dividends per common share (1) (in Dollars per share) $ 0.125 $ 0.125 $ 1.375 [1] $ 0.345
Weighted average shares outstanding:        
Basic (in Shares) 2,951,894 2,919,250 2,939,057 2,884,191
Diluted (in Shares) 3,002,567 2,975,863 2,993,317 2,937,343
[1] Dividends per share for the nine months ended June 29, 2013 include a special dividend of $1.00 per share paid on December 4, 2012.