CONDENSED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (3,604,936)	$ (4,009,981)
Adjustments to reconcile loss to net cash used in operating activities:
Depreciation and amortization	124,669	142,193
Amortization of loan issuance costs and fair value of warrants	52,631	55,593
Stock-based compensation expense	429,528	399,235
Changes in operating assets and liabilities:
Accounts receivable, net	42,218	6,390
Receivable from related party	(9,038)	(26,782)
Inventory	36,804	12,527
Prepaid expenses and other current assets	157,291	(61,194)
Accounts payable	361,618	(153,689)
Accrued expenses	4,113	33,191
Deferred revenue	(552,553)	(185,679)
Deferred liability	27,835	31,082
Net cash used in operating activities	(2,929,820)	(3,757,114)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital additions	(8,963)	(21,518)
Net cash used in investing activities	(8,963)	(21,518)
CASH FLOWS FROM FINANCING ACTIVITIES:
Private placement offering costs	0	(7,100)
Payment of notes payable	(500,000)	0
Proceeds from employee stock purchase plan	7,131	10,844
Net cash (used in) provided by financing activities	(492,869)	3,744
Net increase (decrease) in cash and cash equivalents	(3,431,652)	(3,774,888)
Cash and cash equivalents, beginning of period	4,706,018	11,466,807
Cash and cash equivalents, end of period	1,274,366	7,691,919
Cash paid for interest	$ 223,708	$ 237,500