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Condensed Balance Sheets (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Current assets:    
Cash and cash equivalents $ 13,444 $ 17,974
Prepaid expenses and other current assets 306 266
Total current assets 13,750 18,240
Property and equipment, net 1,114 1,075
Other long-term assets 130 130
Total assets 14,994 19,445
Current liabilities:    
Accounts payable 890 1,010
Accrued expenses 1,155 1,498
Accrued disposition costs 1,173 1,082
Convertible notes payable to related parties, net of discount 143 103
Total current liabilities 3,361 3,693
Total liabilities 3,361 3,693
Stockholders' equity:    
Common stock 2,002 2,002
Additional paid-in capital 174,791 173,989
Accumulated deficit (165,160) (160,239)
Total stockholders' equity 11,633 15,752
Total liabilities and stockholders' equity $ 14,994 $ 19,445