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Condensed Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Current assets:    
Cash $ 13,307 $ 12,940
Accounts receivable 1,091 3,345
Prepaid expenses and other current assets 268 234
Total current assets 14,666 16,519
Property and equipment, net 298 108
Total assets 14,964 16,627
Current liabilities:    
Accounts payable 319 447
Accrued expenses 565 601
Deferred revenue 1,917 1,906
Total current liabilities 2,801 2,954
Total liabilities 2,801 2,954
Commitments and contingencies (Note 8)    [1]    [1]
Stockholders’ equity:    
Common stock, 70,000,000 shares authorized with par value $0.001per share; 32,956,300 and 32,778,993 shares issued and outstanding at March 31, 2012 and December 31, 2011, respectively 33 33
Additional paid-in capital 142,989 142,955
Accumulated other comprehensive income 57 13
Accumulated deficit (130,916) (129,328)
Total stockholders’ equity 12,163 13,673
Total liabilities and stockholders’ equity 14,964 16,627
Series A Preferred Stock
    
Stockholders’ equity:    
Preferred stock, value 0 0
Series B Preferred Stock
    
Stockholders’ equity:    
Preferred stock, value $ 0 $ 0
[1] Note 8