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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Current assets    
Cash and cash equivalents $ 9,420 $ 40,025
Short-term investments 23,368 9,413
Accounts receivable, net 308 969
Unbilled contracts receivable 6 74
Prepaid expenses and other current assets 1,993 1,522
Total current assets 35,095 52,003
Long-term investments 21,908 8,537
Property and equipment, net 1,149 1,382
Goodwill 23,134 23,134
Intangible assets, net 3,717 4,400
Other assets 182 181
Total assets 85,185 89,637
Current liabilities    
Accounts payable 757 336
Accrued expenses and other liabilities 4,064 2,779
Deferred revenue 875 920
Total current liabilities 5,696 4,035
Long-term liabilities 126 109
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; 38,746 shares and 38,423 shares issued and outstanding at March 31, 2012 and December 31, 2011, respectively 385 384
Additional paid-in capital 151,604 150,507
Accumulated other comprehensive income (loss) (12) 1
Accumulated deficit (72,614) (65,399)
Total stockholders' equity 79,363 85,493
Total liabilities and stockholders' equity $ 85,185 $ 89,637