Condensed Consolidated Statements of Operations - Segments [Domain] - Finite-Lived Intangible Assets, Major Class Name [Domain] - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Product revenues	$ 22,953,284	$ 19,202,860	$ 39,796,551	$ 36,092,981
Revenue from freight	18,913	11,333	28,766	21,121
Total revenue	22,972,197	19,214,193	39,825,317	36,114,102
Cost of revenues	14,662,027	11,506,825	25,282,102	21,412,512
Gross profit	8,310,170	7,707,368	14,543,215	14,701,590
Operating expenses:
Selling, general and administrative	7,939,123	6,494,599	16,657,167	12,686,299
Depreciation and amortization	646,067	1,076,155	1,643,722	2,129,168
Research and development	485,833	328,765	895,976	598,617
Bad debt	54,136	30,231	136,747	(77,769)
Loss on disposals of fixed assets	0	0	0	4,754
Impairment of intangible asset	0	0	2,500	0
Total operating expenses	9,125,159	7,929,750	19,336,112	15,341,069
Loss from operations	(814,989)	(222,382)	(4,792,897)	(639,479)
Other income (expense):
Other income (expense)	177,213	4,615	133,060	86,189
Unrealized gain (loss) on derivative	106,516	(61,583)	47,113	(117,163)
Earnings from equity investment	10,014	26,740	23,715	42,110
Amortization of investment premiums and discounts	(388)	(17,319)	(14,608)	(32,301)
Interest expense	(96,366)	(127,783)	(209,289)	(253,274)
Total other income (expense), net	196,989	(175,330)	(20,009)	(274,439)
(Loss) before taxes	(618,000)	(397,712)	(4,812,906)	(913,918)
(Benefit) for taxes	(114,124)	(331,250)	(232,874)	(359,538)
Net (loss)	$ (503,876)	$ (66,462)	$ (4,580,032)	$ (554,380)
Basic and diluted (loss) per common share	$ (0.02)	$ (0.00)	$ (0.22)	$ (0.03)
Basic and diluted weighted average common and common equivalent shares outstanding	20,786,081	20,628,347	20,780,074	20,608,048