CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net loss	$ (3,762,025)	$ (3,676,091)
Adjustments to reconcile net loss to net cash used for operating activities:
Depreciation	108,359	78,856
Amortization of intangible assets	23,189	16,016
Amortization of deferred financing costs	44,491	30,810
Provision for bad debt	34,747	80,651
Stock-based compensation	848,589	182,955
Interest added to note payable		71,950
Change in assets and liabilities:
Accounts receivable	(366,469)	(588,243)
Inventory	(391,890)	(581,980)
Prepaid expenses and other	(237,633)	(274,114)
Accounts payable and accrued expenses	(341,899)	55,479
Deferred revenue	86,459	(5,396)
Net cash used for operating activities	(3,954,082)	(4,609,107)
Cash flows from investing activities:
Purchase of property and equipment	(98,391)	(402,927)
Acquisition of intangible assets	(84,898)	(85,416)
Net cash used for investing activities	(183,289)	(488,343)
Cash flows from financing activities:
Borrowings on revolving loan	11,247,114
Payments on revolving loan	(11,295,817)
Repayments of long-term debt	(5,158)
Debt issuance costs	(26,429)
Proceeds from exercise of stock options	117,021	136,702
Net cash provided by financing activities	36,731	136,702
Net increase (decrease) in cash and cash equivalents	(4,100,640)	(4,960,748)
Cash and cash equivalents, beginning of year	30,014,405	25,909,500
Cash and cash equivalents, end of period	25,913,765	20,948,752
Supplemental disclosures of cash flow activity:
Cash paid for interest	$ 505,020	$ 900,410