Statements Of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities
Net loss	$ (4,607,417)	$ (4,674,268)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation	185,802	134,025
Amortization of intangibles	99,660	149,917
Amortization of deferred finance costs	108,850	111,018
Share-based compensation	566,975	637,246
Adjustment of warrants	(166,664)	(106,792)
Changes in operating assets and liabilities:
Accounts receivable	1,318,967	(969,414)
Inventories	(806,755)	609,088
Prepaid expenses and other current assets	147,942	244,527
Other assets	(13,081)	67,541
Accounts payable	587,562	(60,014)
Accrued liabilities	(627,335)	497,625
Deferred revenue	(1,398,213)	(435,029)
Other liabilities	(5,307)	(409,358)
Net cash used in operating activities	(4,609,014)	(4,203,888)
Cash flows from investing activities
Purchase of equipment		(52,410)
Net cash used in investing activities		(52,410)
Cash flows from financing activities
Payments of deferred financing costs	(100,000)
Proceeds from (payments of) revolving line of credit	3,000,000
Payments of Healthcare Royalty Partners debt	(23,709)	(80,328)
Proceeds from issuance of stock, net of issuance costs	(2,770)	695,598
Net cash provided by (used in) financing activities	2,873,521	615,270
Net increase (decrease) in cash and cash equivalents	(1,735,493)	(3,641,028)
Cash and cash equivalents at beginning of period	5,593,582	7,270,301
Cash and cash equivalents at end of period	$ 3,858,089	$ 3,629,273