Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ 3,499,000	$ (8,387,000)
Depreciation and amortization	53,000	43,000
Stock-based compensation expense	201,000	544,000
Change in fair value of warrant and options liabilities	(6,964,000)	1,617,000
Change in fair value of convertible notes	(4,814,000)	2,024,000
Loss on extinguishment of convertible notes	3,274,000
Financing costs associated with convertible notes		80,000
Non-cash interest expense	95,000	331,000
Change in assets and liabilities:
Restricted cash	(30,000)
Accounts receivable	(80,000)	48,000
Inventory	42,000	56,000
Prepaid expenses and other assets	81,000	58,000
Accounts payable	48,000	228,000
Deferred revenue	(319,000)	32,000
Accrued liabilities	110,000	161,000
Net cash flows used in operating activities	(4,804,000)	(3,165,000)
Cash flows from investing activities:
Purchase of property and equipment		(74,000)
Net cash used for investing activities		(74,000)
Cash flows from financing activities:
Net proceeds from sale of common stock and warrants	5,079,000
Net proceeds from issuance of convertible notes and warrants	250,000	920,000
Net cash provided by financing activities	5,329,000	920,000
Effect of exchange rate changes on cash and cash equivalents	(14,000)	(8,000)
Net (decrease) increase in cash and cash equivalents	511,000	(2,327,000)
Cash and cash equivalents at beginning of period	258,000	2,585,000
Cash and cash equivalents at end of period	769,000	258,000
Supplemental disclosure of cash flow information:
Cash paid for interest	107,000	217,000
Supplemental disclosure of non-cash financing activities:
Cashless exercise of warrants	2,655,000
Cashless conversion of convertible notes	$ 810,000