Unaudited Condensed Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating activities
Net loss	$ (7,364)	$ (2,413)
Adjustments to reconcile net loss to net cash used for operating activities:
Share-based compensation expense	5,825	2,710
Gain on adjustment to fair value of derivative liabilities		(1,469)
Depreciation expense	1
Changes in operating assets and liabilities:
Restricted cash	(37)
Prepaids and other current assets	(42)	(37)
Accounts payable and accrued expenses	68	(30)
Accrued payroll and related expenses	24	5
Net cash used for operating activities	(1,525)	(1,234)
Investing Activities
Purchase of equipment and furnishings	(38)
Net cash used for investing activities	(38)
Net decrease in cash and cash equivalents	(1,563)	(1,234)
Cash and cash equivalents at beginning of period	3,405	5,040
Cash, cash equivalents at end of period	1,842	3,806
Non-cash investing and financing activity
Conversion of Series C-12 and D-12 Preferred Stock into common stock	58	47
Dividends paid in Series C-12 and C-22 Preferred Stock	$ 463	$ 374