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Condensed Consolidated Statements Of Operations (USD $)	3 Months Ended		9 Months Ended
	Oct. 29, 2011	Oct. 30, 2010	Oct. 29, 2011	Oct. 30, 2010
Condensed Consolidated Statements Of Operations [Abstract]
Net Sales	$ 19,568,600	$ 18,329,000	$ 58,764,264	$ 53,159,060
Cost of Sales	11,554,870	10,928,429	35,348,220	31,869,215
Gross Profit	8,013,730	7,400,571	23,416,044	21,289,845
Costs and Expenses:
Selling and Marketing	4,554,875	4,231,926	13,646,526	12,349,272
General and Administrative	1,009,145	1,078,942	2,884,286	3,326,920
Research and Development	1,261,632	1,382,696	3,916,899	3,736,909
Operating Expenses	6,825,652	6,693,564	20,447,711	19,413,101
Operating Income	1,188,078	707,007	2,968,333	1,876,744
Other (Expense) Income	(68,663)	24,157	378,619	130,392
Income Before Income Taxes	1,119,415	731,164	3,346,952	2,007,136
Income Tax Provision (Benefit)	319,428	(61,137)	1,069,688	462,012
Net Income	$ 799,987	$ 792,301	$ 2,277,264	$ 1,545,124
Net Income per Common Share:
Basic	$ 0.11	$ 0.11	$ 0.31	$ 0.21
Diluted	$ 0.11	$ 0.11	$ 0.31	$ 0.21
Weighted Average Number of Shares Outstanding:
Basic	7,339,639	7,334,589	7,300,167	7,276,835
Diluted	7,420,835	7,491,981	7,422,787	7,488,343
Dividends Declared Per Common Share	$ 0.07	$ 0.07	$ 0.21	$ 0.21

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