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CONSOLIDATED BALANCE SHEETS (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Current assets:    
Cash and cash equivalents $ 16,412 $ 24,449
Prepaid expenses and other current assets 1,599 1,069
Current assets of discontinued operations 861 313
Total current assets 18,872 25,831
Property, plant and equipment (net) 129 167
Long-term assets of discontinued operations 353  
Total assets 19,354 25,998
Current liabilities:    
Accounts payable 2,259 1,717
Accrued and other current liabilities 5,601 4,183
Economic Rights measured at fair value 1,120  
Other liabilities measured at fair value 20 71
Current liabilities of discontinued operations 335 527
Total current liabilities 9,335 6,498
Total liabilities 9,335 6,498
Commitments and contingencies      
Stockholders' equity:    
Preferred stock, $0.001 par value; 5,000,000 shares authorized at December 31, 2011 and 2012; 1,213,142 shares issued and outstanding at December 31, 2011 and 2012. Aggregate preference in liquidation of $13,708,505 and $14,436,390 at December 31, 2011 and December 31, 2012, respectively 1 1
Common stock, $0.001 par value; 100,000,000 shares authorized at December 31, 2011 and 2012; 7,745,780 and 8,686,484 shares issued and outstanding at December 31, 2011 and 2012, respectively 9 8
Additional paid-in capital 280,211 276,498
Accumulated other comprehensive income 48 57
Deficit accumulated during the development stage (270,250) (257,064)
Total stockholders' equity 10,019 19,500
Total liabilities and stockholders' equity $ 19,354 $ 25,998