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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Current assets    
Cash and cash equivalents $ 5,967 $ 40,025
Short-term investments 30,208 9,413
Accounts receivable, net 1 969
Prepaid expenses and other current assets 2,092 1,596
Total current assets 38,268 52,003
Long-term investments 9,089 8,537
Property and equipment, net 1,034 1,382
Goodwill 23,134 23,134
Intangible assets, net 2,904 4,400
Other assets 182 181
Total assets 74,611 89,637
Current liabilities    
Accounts payable 847 336
Accrued expenses and other liabilities 1,923 2,779
Deferred revenue 663 920
Total current liabilities 3,433 4,035
Long-term liabilities 158 109
Commitments and contingencies (Note 4)      
Stockholders' equity    
Preferred stock, $0.01 par value; 20,000 shares authorized; none issued and outstanding      
Common stock, $0.01 par value; 120,000 shares authorized; 39,810 shares and 38,423 shares issued and outstanding at September 30, 2012 and December 31, 2011, respectively 398 384
Additional paid-in capital 155,836 150,507
Accumulated other comprehensive income 26 1
Accumulated deficit (85,240) (65,399)
Total stockholders' equity 71,020 85,493
Total liabilities and stockholders' equity $ 74,611 $ 89,637