CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash Flows From Operating Activities
Net loss	$ (1,125,913)	$ (1,572,133)
Adjustments to reconcile net income (loss) to net cash and cash equivalents used in operating activities:
Bad debt expense	2,345	169,054
Depreciation and amortization	100,534	94,157
Provision for product warranties	36,790	80,122
Stock based compensation	541,608	104,070
Decrease (increase) in:
Accounts receivable	(3,107,036)	(1,290,900)
Inventories	(62,071)	(282,406)
Prepaid and other current assets	86,775	(256,274)
Increase (decrease) in:
Accounts payable and accrued expenses	87,870	559,423
Deferred revenue	5,005	(297,879)
Product warranties	(43,467)	(68,300)
Total Adjustments	(2,351,647)	(1,188,933)
Net Cash Used In Operating Activities	(3,477,560)	(2,876,066)
Cash Flows from Investing Activities
Acquisition of property and equipment	(287,594)	(144,492)
Investment in debt securities - held to maturity		(1,840,228)
Investments matured	1,104,635	1,500,000
Net Cash Provided By (Used In) Investing Activities	817,041	(484,720)
Cash Flows from Financing Activities
Exercise of warrants	90,867
Revolving credit facility, net	2,000,663	1,500,000
Net Cash Provided By Financing Activities	2,091,530	1,344,532
Net Decrease in Cash and Cash Equivalents	(568,991)	(1,901,254)
Cash and Cash Equivalents - Beginning	10,085,468
Cash and Cash Equivalents - Ending	9,516,479	3,141,223
Supplemental Disclosure of Cash Flow Information
Interest Paid	$ 33,415	$ 6,641