Consolidated Statement of Cash Flows (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Cash flows from operating activities
Net loss from operations	$ (11,307,000)	$ (1,645,000)	$ (64,583,000)
Adjustments required to reconcile net loss from operations to net cash used in operating activities:
Loss on derivative liabilities	8,773,000	(87,000)	49,330,000
Shares issued for technology access fee	0	0	3,000,000
Amortization of note discount and patents	8,000	311,000	2,667,000
Warrants issued as investment fees	0	0	759,000
Depreciation	18,000	21,000	82,000
Stock-based compensation	234,000	154,000	1,437,000
Changes in operating assets and liabilities net of acquisitions:
Accounts receivable	(4,000)	12,000	15,000
Tax refund	0	618,000	618,000
Accounts payable and accrued expenses	(1,365,000)	(380,000)	454,000
Prepaid expenses and other current assets	(48,000)	(219,000)	(149,000)
Interest on loan notes	0	96,000	233,000
Other	0	0	(155,000)
Net cash used in operating activities	(3,691,000)	(1,119,000)	(6,292,000)
Cash flows from investing activities
Purchases of property and equipment	(229,000)	0	(102,000)
Net cash used in investing activities	(229,000)	0	(102,000)
Cash flows from financing activities
Proceeds from December financings	0	0	16,887,000
Proceeds from Series B redeemable convertible preferred stock	0	0	7,000,000
Proceeds from convertible loan notes	0	976,000	2,000,000
Net cash provided by financing activities	0	976,000	25,887,000
Net increase (decrease) in cash and cash equivalents	(3,920,000)	(143,000)	19,493,000
Cash and cash equivalents, beginning of period	20,355,000	862,000	862,000
Cash and cash equivalents, end of period	16,435,000	719,000	20,355,000
Supplemental schedule of non-cash financing activities:
Conversion of convertible loan notes and accrued interest to Series B redeemable convertible preferred stock	0	0	6,316,000
Accretion of Series B redeemable convertible preferred stock	$ 314,000	$ 0	$ 618,000