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Revenue Recognition (Tables)
9 Months Ended
Sep. 30, 2020
Revenue Recognition [Abstract]  
Revenue from contracts
   Three Months Ended
September 30,
  Nine Months Ended
September 30,
   2020  2019  2020  2019
             
Lead fees  $14,758   $22,564   $47,481   $69,953 
Advertising                    
Clicks   2,432    4,948    10,102    14,463 
Display and other advertising   622    1,020    1,720    2,815 
    3,054    5,968    11,822    17,278 
                     
Other revenues   1    20    15    67 
   Total revenues  $17,813   $28,552   $59,318   $87,298