Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Current assets:    
Cash and cash equivalents $ 12,507 $ 15,533
Short-term investments, available-for-sale 25,611 30,167
Accounts receivable 33 93
Prepaid expenses and other current assets 635 470
Assets of discontinued operations 0 3,029
Current assets 38,786 49,292
Property and equipment, net 75 59
Long-term investments 0 1,513
Other non-current assets 87 26
Intangible assets, net 253 335
Goodwill 595 595
Total assets 39,796 51,820
Current liabilities:    
Accounts payable 1,306 1,282
Accrued liabilities 1,900 1,902
Liabilities of discontinued operations 95 3,503
Total current liabilities 3,301 6,687
Other liabilities 0 1
Total liabilities 3,301 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 June 30, 2014 and December 31, 2013. 0 0
Common stock - $0.00001 par value, 100,000,000 shares authorized, 15,541,758 and 15,300,214 shares issued and outstanding at June 30, 2014 and December 31, 2013, respectively. 0 0
Additional paid-in capital 129,265 126,615
Accumulated other comprehensive income 4 3
Accumulated deficit (92,774) (81,486)
Total stockholders' equity 36,495 45,132
Total liabilities and stockholders' equity $ 39,796 $ 51,820