CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) / INCOME - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues	$ 6,667,064	$ 6,755,741
Cost of revenues	3,928,622	3,416,873
Gross profit	2,738,442	3,338,868
Operating Expenses:
General & administrative	1,252,075	1,144,090
Marketing & selling	1,127,654	1,288,481
Research & development	360,458	455,782
Total Operating Expenses	2,740,187	2,888,353
Operating (loss) income	(1,745)	450,515
Interest expense, net	(34,641)	(33,327)
Net (loss) / income before (benefit) from / provision for income taxes	(36,386)	417,188
(Benefit) from / provision for income taxes	(12,942)	139,666
Net (loss) / income and comprehensive (loss) / income	$ (23,444)	$ 277,522
Basic net (loss) / income per share (in dollars per share)	$ 0.00	$ 0.05
Diluted net (loss) / income per share (in dollars per share)	0.00	0.05
Dividends declared per share (in dollars per share)	$ 0.15	$ 0.15
Weighted average common shares outstanding, basic (in shares)	5,422,541	5,375,061
Weighted average common shares outstanding, diluted (in shares)	5,422,541	5,401,998