Condensed Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net loss	$ (4,764)	$ (38,750)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	31	44
Amortization	179	179
Change in fair value of derivative instruments	(5,075)	8,003
Non-cash interest expense	4,091	21,254
Non-cash compensation expense	220	685
Gain on disposal of fixed assets		(1)
Changes in assets and liabilities excluding non-cash transactions:
(Increase) decrease in accounts receivable	(21)	99
Decrease (increase) in inventory	2	(24)
Decrease (increase) in prepaid expenses and other current assets	13	(387)
Increase in deferred revenue	43	2,069
Decrease in accounts payable and accrued expenses	(2,408)	(516)
Increase in other current liabilities	6	415
Decrease in deferred lease liability	(30)	(25)
Decrease in restructuring accrual	(300)	(300)
Total adjustments	(3,249)	31,495
Net cash used in operating activities	(8,013)	(7,255)
Net cash provided by investing activities - proceeds from sale of fixed assets		1
Cash flows provided by financing activities
Exercise of warrants	236
Proceeds from the issuance of common stock	7,174	6,674
Exercise of options	6
Proceeds from notes payable		500
Payment on notes payable		(525)
Net cash provided by financing activities	7,416	6,649
Net decrease in cash and cash equivalents	(597)	(605)
Cash and cash equivalents, beginning of period	5,326	3,566
Cash and cash equivalents, end of period	4,729	2,961
Schedule of non-cash financing activities
Common stock issued to settle accrued Directors compensation		11
Exchange of debt as deferred revenue		13,000
Reclassification of derivative liability to equity upon exercise of warrants	$ 349