BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 13,778	$ 24,387
Interest, income taxes and other current assets	758	643
Total current assets	14,536	25,030
Furniture and equipment, net	160	258
Total assets	14,696	25,288
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	77	246
Accrued compensation	13	674
Accrued clinical and other accrued liabilities	29	236
Share-based payments liability	0	660
Total current liabilities	119	1,816
Potentially redeemable equity - See Note 10	0	15,556
Stockholders' Equity
Common Stock $.0005 par value; 100,000,000 shares authorized; 40,775,411 shares in 2011 and 2010 issued and outstanding	20	20
Additional paid-in capital	189,074	188,258
Accumulated deficit ($146,755 at 2011 and $152,600 at 2010 accumulated during development stage period)	(174,517)	(180,362)
Total stockholders' equity	14,577	7,916
Total liabilities, potentially redeemable equity and stockholders' equity	$ 14,696	$ 25,288