Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net loss	$ (2,412,000)	$ (7,808,000)
Depreciation and amortization	13,000	13,000
Stock-based compensation expense	49,000	68,000
Change in fair value of warrant and options liabilities	1,011,000	3,999,000
Change in fair value of convertible notes	367,000	1,312,000
Loss on extinguishment of convertible notes		1,283,000
Non-cash interest expense		95,000
Change in assets and liabilities:
Restricted cash		(500,000)
Accounts receivable	245,000	27,000
Inventories	5,000	71,000
Prepaid expenses and other assets	50,000	(483,000)
Accounts payable	85,000	(39,000)
Deferred revenue		(69,000)
Accrued liabilities	(44,000)	(127,000)
Net cash flows used in operating activities	(631,000)	(2,158,000)
Cash flows from financing activities:
Net proceeds from sale of common stock and warrants		3,504,000
Net proceeds from issuance of convertible notes and warrants		250,000
Net cash provided by financing activities		3,754,000
Effect of exchange rate changes on cash and cash equivalents	(10,000)	9,000
Net (decrease) increase in cash and cash equivalents	(641,000)	1,605,000
Cash and cash equivalents at beginning of period	769,000	258,000
Cash and cash equivalents at end of period	128,000	1,863,000
Supplemental disclosure of cash flow information:
Cash paid for interest		62,000
Supplemental disclosure of non-cash financing activities:
Cashless exercise of warrants		$ 844,000