Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Operating activities
Net loss	$ (17,935)	$ (7,737)
Adjustments to reconcile net loss to net cash used for operating activities:
Share-based compensation expense	12,373	8,604
Gain on adjustment to fair value of derivative liabilities	0	(2,998)
Depreciation expense	5	0
Changes in operating assets and liabilities:
Restricted Cash	(37)	0
Prepaids and other current assets	(18)	35
Accounts payable and accrued expenses	822	(49)
Accrued payroll and related expenses	56	10
Net cash used for operating activities	(4,734)	(2,135)
Investing Activities
Purchase of equipment and furnishings	(43)	0
Net cash used for investing activities	(43)	0
Financing Activities
Net proceeds from the issuance of common stock	6,751	0
Proceeds from the issuance of series F convertible preferred stock	3,250	0
Exercise of Series C-2 Warrants for Preferred Shares	0	500
Net cash provided by financing activities	10,001	500
Net increase (decrease) in cash and cash equivalents	5,224	(1,635)
Cash and cash equivalents at beginning of period	3,405	5,040
Cash and cash equivalents at end of period	8,629	3,405
Supplemental disclosure of cash flow information:
Dividends paid in Series C-1 and C-2 preferred stock	801	780
Exchange of Series C-2 for Series C-1 preferred stock	557	0
Redemption of Series D-1 preferred stock and Series C-2 preferred stock warrants	4,568	0
Conversion of Series C-1 and D-1 Preferred Stock into common stock	124	47
Issuance of Series D-1 Preferred Stock	0	4,631
Reclassification of preferred stock no longer redeemable	0	5,792
Reclassification of Derivative Liabilities value due to removal of redemption and certain conversion features	$ 0	$ 12,418