Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Net sales	$ 5,464,904	$ 4,729,983	$ 15,804,184	$ 14,022,775
Cost of sales	2,829,746	2,618,095	8,164,917	7,851,606
Gross profit	2,635,158	2,111,888	7,639,267	6,171,169
Operating expenses:
Research and development	851,846	849,854	2,584,103	2,484,739
Selling, general and administrative	3,240,832	2,730,042	9,464,833	8,967,491
Total operating expenses	4,092,678	3,579,896	12,048,936	11,452,230
Operating loss	(1,457,520)	(1,468,008)	(4,409,669)	(5,281,061)
Interest expense	216,667	226,342	648,755	566,895
Other income	(267)	(16,962)	(1,393)	(17,869)
Loss from continuing operations before income taxes	(1,673,920)	$ (1,677,388)	$ (5,057,031)	(5,830,087)
Income tax benefit	(16,287)			(6,857)
Loss from continuing operations	(1,657,633)	$ (1,677,388)	$ (5,057,031)	(5,823,230)
Income (loss) from discontinued operations, net of income taxes	30,248	(9,835)	(51,151)	12,735
Net loss	(1,627,385)	(1,687,223)	(5,108,182)	(5,810,495)
Preferred stock dividend accretion	348,747	325,367	1,028,350	959,409
Net loss applicable to common stockholders	$ (1,976,132)	$ (2,012,590)	$ (6,136,532)	$ (6,769,904)
Loss per common share from continuing operations - basic and diluted	$ (0.08)	$ (0.10)	$ (0.25)	$ (0.35)
Income (loss) per common share from discontinued operations - basic and diluted	0.01	(0.00)	(0.00)	0
Per share basic and diluted loss applicable to common stockholders	$ (0.07)	$ (0.10)	$ (0.25)	$ (0.35)
Weighted-average number of common shares outstanding: Basic and diluted	26,643,297	19,283,787	24,716,125	19,251,789