Condensed Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Current assets:    
Cash and cash equivalents $ 70,037 $ 10,659
Marketable securities 28,634 51,703
Prepaid and other current assets 2,348 3,275
Restricted cash 200 200
Total current assets 101,219 65,837
Property and equipment, net 166 314
Goodwill 2,962 2,962
Other assets   38
Total assets 104,347 69,151
Current liabilities:    
Accounts payable 1,100 987
Accrued liabilities 2,227 2,108
Other liabilities, current portion 42 244
Total current liabilities 3,369 3,339
Other liabilities, non-current portion   60
Total liabilities 3,369 3,399
Stockholders' equity:    
Common stock 19 14
Additional paid-in capital 206,509 165,803
Accumulated deficit (105,556) (100,094)
Accumulated other comprehensive income 6 29
Total stockholders' equity 100,978 65,752
Total liabilities and stockholders' equity $ 104,347 $ 69,151