Condensed Balance Sheets (unaudited) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 38,814	$ 39,259
Prepaid expenses and other current assets	40	63
Total current assets	38,854	39,322
Property and equipment, net	5	6
Total assets	38,859	39,328
Current liabilities:
Accounts payable and accrued liabilities	85	201
Warrant liability	2	30
Total current liabilities	87	231
Other long-term liabilities	92	89
Total liabilities	179	320
Stockholders’ equity:
Common stock, $0.001 par value; 250,000,000 shares authorized; 41,647,394 and 41,647,394 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively	42	42
Additional paid-in capital	4,320,576	4,320,534
Accumulated deficit	(4,281,938)	(4,281,568)
Total stockholders’ equity	38,680	39,008
Total liabilities and stockholders’ equity	$ 38,859	$ 39,328