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Revenue Recognition (Tables)
3 Months Ended
Mar. 31, 2019
Accounting Policies [Abstract]  
Revenue from contracts
   

Three Months Ended

March 31,

 
    2019     2018  
             
Lead fees   $ 25,698     $ 24,080  
Advertising                
Click traffic     5,059       6,691  
Display and other advertising     819       1,396  
Total Advertising     5,878       8,087  
                 
Other revenues     28       182  
Total revenue   $ 31,604     $ 32,349