Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
ASSETS:
Cash and cash equivalents	$ 1,470	$ 5,923
Prepaid expenses	60	100
Deposits	10	28
Other receivables	0	1
Total current assets	1,540	6,052
Property and equipment, net of accumulated depreciation of $66 and $273	7	44
Restricted cash	2,478	0
Total assets	4,025	6,096
LIABILITIES AND STOCKHOLDERS' EQUITY:
Accounts payable	7	201
Accrued expenses	346	1,005
Redeemable preferred stock	2,478	0
Other current liabilities	22	29
Total current liabilities	2,853	1,235
Commitments and contingencies (Notes 6, 11, 12)
Stockholders' equity: (Notes 3, 7, 8, 9, 10)
Preferred stock, $.01, 10,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $.01 par value, 100,000 shares authorized; 35,481 and 35,525 shares issued and 35,422 and 35,466 outstanding respectively	355	355
Paid-in capital	263,395	263,281
Cost of treasury stock (59 shares)	(346)	(346)
Deficit accumulated during development stage	(262,232)	(258,429)
Total stockholders' equity	1,172	4,861
Total liabilities and stockholders' equity	$ 4,025	$ 6,096