Condensed Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating activities:
Net loss	$ (2,413)	$ (1,795)
Adjustments to reconcile net loss to net cash used for operating activities:
Share-based compensation expense	2,710	131
(Gain) loss on adjustments to fair value of derivative liabilities	(1,469)	647
Change in operating assets and liabilities:
Prepaids and other current assets	(37)	48
Accounts payable	121	(13)
Accrued expenses	(151)	(79)
Accrued payroll and related expenses	5	(13)
Net cash used for operating activities	(1,234)	(1,074)
Net decrease in cash and cash equivalents	(1,234)	(1,074)
Cash and cash equivalents at beginning of period	5,040	6,866
Cash and cash equivalents at end of period	3,806	5,792
Supplemental schedule of noncash investing and financing activities:
Issuance of preferred stock	3,611
Conversion of preferred stock into common stock	(25)	(248)
Reclassification of preferred stock currently redeemable		5,532
Preferred stock dividends forfeited (earned)	(76)	78
Payment of preferred stock dividends	374
Forfeiture of preferred stock dividends		$ (78)