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Consolidated Statements of Income (Unaudited) (USD $)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
NET SALES $ 19,237,827 $ 18,177,078
COST OF SALES 7,306,998 6,811,445
Gross profit 11,930,829 11,365,633
OPERATING EXPENSES 9,309,969 8,811,458
INCOME FROM OPERATIONS 2,620,860 2,554,175
OTHER (INCOME) EXPENSE:    
Interest expense 56,094 58,392
Other, net (26,739) (19,814)
Total other (income) expense 29,355 38,578
INCOME BEFORE INCOME TAXES 2,591,505 2,515,597
PROVISION FOR INCOME TAXES 1,005,184 941,492
NET INCOME $ 1,586,321 $ 1,574,105
BASIC (in Dollars per share) $ 0.16 $ 0.15
DILUTED (in Dollars per share) $ 0.16 $ 0.15
BASIC (in Shares) 10,162,442 10,156,442
DILUTED (in Shares) 10,194,219 10,172,950