CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues	$ 6,459,775	$ 6,315,142	$ 19,565,350	$ 18,542,666
Cost of revenues	2,742,072	2,371,255	8,079,141	7,243,474
Gross profit	3,717,703	3,943,887	11,486,209	11,299,192
Operating Expenses:
General & administrative	921,891	1,018,967	2,921,880	2,898,426
Marketing & selling	1,067,768	981,197	3,413,388	2,945,492
Research & development	297,090	136,281	679,031	399,785
Total Operating Expenses	2,286,749	2,136,445	7,014,299	6,243,703
Operating income	1,430,954	1,807,442	4,471,910	5,055,489
Interest income	447	773	1,442	4,790
Net income before provision for income taxes	1,431,401	1,808,215	4,473,352	5,060,279
Provision for income taxes	552,920	708,830	1,766,336	2,009,184
Net income and comprehensive income	$ 878,481	$ 1,099,385	$ 2,707,016	$ 3,051,095
Basic net income per share (in dollars per share)	$ 0.17	$ 0.21	$ 0.52	$ 0.58
Diluted net income per share (in dollars per share)	$ 0.17	$ 0.21	$ 0.51	$ 0.58
Dividends declared per share	$ 0.15	$ 0.12	$ 0.45	$ 0.36
Weighted average common shares outstanding, basic (in shares)	5,272,428	5,237,603	5,256,240	5,227,699
Weighted average common shares outstanding, diluted (in shares)	5,289,808	5,240,895	5,266,237	5,234,577