CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating activities:
Net income (loss)	$ 2,777	$ (12,280)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Non-cash gain on debt extinguishment		(5)
Non-cash interest expense		1,007
Non-cash license expense	132
Non-cash gain on settlement of liabilities	(18)	(321)
Share-based compensation expense	412	260
Gain on foreign exchange transactions		(1)
Changes in fair market value of liabilities
Stock reserved for issuance to settle liabilities		2,503
Price adjustable warrants	(6,128)	6,256
Cash changes in assets and liabilities
Accounts receivable	500	5
Prepaid expenses and other assets	82	73
Accounts payable	90	(361)
Accrued and other liabilities	546	(501)
Accrued restructuring		(12)
Net cash used in operating activities	(1,607)	(3,377)
Financing activities:
Cash payments of notes payable		(250)
Insurance financing		(8)
Proceeds from exercise of warrants for common stock	1
Net cash provided by financing activities	1,096	5,671
Net increase (decrease) in cash	(511)	2,294
Cash - Beginning of period	1,824	909
Cash - End of period	1,313	3,203
Non-cash financing activities:
Reclassification of fair value liability for price adjustable warrants exercised		1,916
Issuance of common stock to settle liabilities	195	3,517
Fair value of warrants issued to purchase common stock to settle liabilities	65
Debt conversion to common stock		1,479
Par value of common stock issued upon conversion of Series C convertible preferred stock	4
Supplemental disclosure of cash flow information
Cash paid for interest		83
Series C Preferred Stock
Financing activities:
Proceeds from sales of preferred shares and warrants, net		5,929
Non-cash financing activities:
Proceeds from sales of preferred shares and warrants, net		$ 6,000
Series D Preferred Stock
Financing activities:
Proceeds from sales of preferred shares and warrants, net	1,095
Non-cash financing activities:
Proceeds from sales of preferred shares and warrants, net	$ 690