Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Current assets:    
Cash and cash equivalents $ 10,421 $ 15,533
Short-term investments, available-for-sale 32,707 30,167
Accounts receivable 46 93
Prepaid expenses and other current assets 554 470
Assets of discontinued operations 168 3,029
Current assets 43,896 49,292
Property and equipment, net 51 59
Long-term investments 0 1,513
Deposits 0 26
Intangible assets, net 294 335
Goodwill 595 595
Total assets 44,836 51,820
Current liabilities:    
Accounts payable 877 1,282
Accrued liabilities 1,005 1,902
Liabilities of discontinued operations 114 3,503
Total current liabilities 1,996 6,687
Other liabilities 0 1
Total liabilities 1,996 6,688
Commitments and contingencies (Note 8)      
Stockholders' equity:    
Preferred Stock - $0.00001 par value, 5,000,000 shares authorized and no shares issued or outstanding at March 31, 2014 and December 31, 2013. 0 0
Common stock - $0.00001 par value, 100,000,000 shares authorized, 15,523,692 and 15,300,214 shares issued and outstanding at March 31, 2014 and December 31, 2013, respectively. 0 0
Additional paid-in capital 128,386 126,615
Accumulated other comprehensive income 5 3
Deficit accumulated during the development stage (85,551) (81,486)
Total stockholders' equity 42,840 45,132
Total liabilities and stockholders' equity $ 44,836 $ 51,820