CONDENSED STATEMENTS OF INCOME (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONDENSED STATEMENTS OF INCOME
NET SALES	$ 4,654,745	$ 4,547,080	$ 8,677,017	$ 8,556,704
COST OF GOODS SOLD	2,770,787	2,743,794	5,328,800	5,247,858
GROSS PROFIT	1,883,958	1,803,286	3,348,217	3,308,846
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	1,329,056	1,285,371	2,794,602	2,711,568
RESEARCH AND DEVELOPMENT EXPENSES	153,412	153,265	325,927	328,979
INCOME FROM OPERATIONS	401,490	364,650	227,688	268,299
INTEREST INCOME	1,744	3,079	3,959	6,805
INCOME BEFORE INCOME TAXES	403,234	367,729	231,647	275,104
INCOME TAX EXPENSE	110,122	124,646	26,285	94,427
NET INCOME	$ 293,112	$ 243,083	$ 205,362	$ 180,677
EARNINGS PER COMMON SHARE:
Basic (in dollars per share)	$ 0.15	$ 0.12	$ 0.10	$ 0.09
Diluted (in dollars per share)	$ 0.15	$ 0.12	$ 0.10	$ 0.09
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	2,007,623	1,986,364	2,004,108	1,985,530
Diluted (in shares)	2,012,552	1,991,311	2,007,724	1,990,129