Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net loss	$ (2,784)	$ (569)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	20	36
Foreign exchange (gain) loss		264
Stock-based compensation expense	88	404
Warrant amendment expense		936
Amortization and write-off of deferred financing costs and discount on loans	116	307
Changes in operating assets and liabilities:
Decrease (increase) in accounts receivable	15	(68)
Decrease in inventory		354
Decrease in prepaid expenses and other current assets	2	153
Increase (decrease) in accounts payable	955	(292)
Decrease in accrued research contract costs	(120)	(17)
Increase in other accrued liabilities	454	252
Recognition of deferred revenue	(148)	(4,247)
Decrease in other liabilities		(112)
Net cash used in operating activities	(1,402)	(2,599)
Cash flows from financing activities:
Proceeds from exercise of warrants		728
Proceeds from issuance of preferred stock and warrants, net of issuance costs		2,834
Proceeds from issuance of common stock to related party, net of issuance costs	500
Proceeds from related party loan	638
Repayment of loans		(2,559)
Net cash provided by financing activities	1,138	1,003
Effect of exchange rate changes on cash and cash equivalents	(16)	(9)
Net increase in cash and cash equivalents	28	(1,605)
Cash and cash equivalents at beginning of year	172	6,378
Cash and cash equivalents at end of period	200	4,773
Supplemental disclosure of cash flow information:
Cash paid for interest	237	448
Cash paid for income taxes	5	2
Supplemental disclosure of non-cash financing activities:
Conversion of preferred stock to common stock	2	1
Beneficial conversion feature in connection with issuance of preferred stock		1,925
Unpaid costs associated with issuance of preferred stock		1
Unpaid financing costs		301
Release of Restricted Cash - Subordinated Notes (Member)
Cash flows from investing activities:
Release of restricted cash	308
Net cash provided by investing activities	$ 308