CONDENSED STATEMENTS OF INCOME - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues	$ 9,700,052	$ 7,001,409	$ 16,367,116	$ 13,757,150
Cost of revenues	4,490,907	3,731,667	8,419,529	7,148,540
Gross profit	5,209,145	3,269,742	7,947,587	6,608,610
Operating Expenses:
General & administrative	1,185,775	1,154,489	2,437,850	2,298,579
Marketing & selling	1,302,034	1,322,117	2,429,688	2,610,598
Research & development	350,205	437,090	710,663	892,872
Total Operating Expenses	2,838,014	2,913,696	5,578,201	5,802,049
Operating income	2,371,131	356,046	2,369,386	806,561
Interest expense, net	(35,492)	(30,877)	(70,133)	(64,204)
Net income before provision for income taxes	2,335,639	325,169	2,299,253	742,357
Provision for income taxes	701,884	72,840	688,942	212,506
Net income	$ 1,633,755	$ 252,329	$ 1,610,311	$ 529,851
Basic net income per share (in dollars per share)	$ 0.3	$ 0.05	$ 0.30	$ 0.10
Diluted net income per share (in dollars per share)	0.3	0.05	0.30	0.10
Dividends declared per share (in dollars per share)	$ 0.15	$ 0.15	$ 0.30	$ 0.30
Weighted average common shares outstanding, basic (in shares)	5,443,150	5,399,270	5,432,902	5,387,232
Weighted average common shares outstanding, diluted (in shares)	5,454,167	5,408,372	5,440,376	5,396,740