CONDENSED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Net loss	$ (3,537)	$ (5,153)
Adjustments to reconcile net loss to net cash used in operating activities
Stock based compensation	133	214
Share-based consulting and other services	73	38
Non-cash interest expense	0	45
Allowance for doubtful accounts	12	2
Depreciation and amortization	960	948
Change in fair value of derivative liabilities	(485)	0
Non-monetary transaction	43	0
Changes in assets and liabilities
Accounts receivable	133	(100)
Inventory	312	(962)
Prepaid expenses and other current assets	31	(26)
Accounts payable	509	(651)
Accrued expenses	330	17
Deferred revenue - related party	(480)	0
Due to related parties	55	1,105
Long term capital lease obligation	87	0
Net cash used in operating activities	(1,824)	(4,523)
Cash flows from investing activities
Capital expenditures for property and equipment	(130)	(84)
Capitalization of intangible assets	(625)	(193)
Net cash used in investing activities	(755)	(277)
Cash flows from financing activities
Payment of capital lease	(35)	(31)
Proceeds from issuance of convertible preferred stock, net of issuance costs	2,677	0
Restricted cash	(600)	0
Net cash provided by (used in) financing activities	2,042	(31)
Net (decrease) in cash	(537)	(4,831)
Cash, beginning of period	758	5,517
Cash, end of period	221	686
Supplemental cash flow disclosures of investing and financing activities
Stock issued in connection with conversion of due to related party	1,756	0
Stock issued in connection with conversion of preferred stock and deemed dividend	1,379	0
Derivative liability in connection with conversion option and warrants	460	0
Stock issued as payment of fees on convertible preferred stock	88	0
Amortization of prepaid fees related to the $15M purchase agreement	45	0
Stock issued as payment of bonus	$ 0	$ 168