Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
NET SALES	$ 20,672,227	$ 20,788,764
COST OF SALES	8,019,481	8,205,836
Gross profit	12,652,746	12,582,928
OPERATING EXPENSES	10,289,956	10,194,047
INCOME FROM OPERATIONS	2,362,790	2,388,881
OTHER (INCOME) EXPENSE:
Interest expense	23,429	44,163
Other, net	39	(19,873)
Total other (income) expense	23,468	24,290
INCOME BEFORE INCOME TAXES	2,339,322	2,364,591
PROVISION FOR INCOME TAXES	818,325	920,184
NET INCOME	$ 1,520,997	$ 1,444,407
NET INCOME PER COMMON SHARE:
BASIC (in dollars per share)	$ 0.16	$ 0.14
DILUTED (in dollars per share)	$ 0.16	$ 0.14
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING:
BASIC (in shares)	9,698,951	10,211,333
DILUTED (in shares)	9,718,453	10,241,096