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Impairments
 12 Months Ended
Dec. 31, 2021
Disclosure Text Block Supplement [Abstract]  
Impairments
26. Impairments
The following table summarizes impairments recognized by the Company:
 
    
Years Ended December 31,
  
    
2021
     
2020
     
2019
  
Lease termination – New York office (Note 14)
    $ 9,277      $ —        $ —    
Fixed assets – New York office (Note
9
)
      6,576        —          —    
Lease termination – London office (Note 14)
      303        —          —    
AdvisorEngine – Financial interests
      —        19,672      $ 30,138  
Thesys – Series Y Preferred
      —        3,080        —    
WisdomTree Japan
      —        —          572  
    
 
 
     
 
 
     
 
 
  
Total
    $
 
 16,156      $
 
 22,752      $
 
 30,710  
    
 
 
     
 
 
     
 
 
  
AdvisorEngine
During the years ended December 31, 2020 and 2019, the Company recognized impairments of $19,672 and $30,138 to adjust the carrying value of its previously held financial interests in AdvisorEngine to fair value. Fair value was subsequently adjusted during the year ended December 31, 2020 by recognizing a gain of $1,093 in other losses and gains, net. These fair value adjustments were based upon the final sale terms as disclosed above (Note 25).
Thesys
During the year ended December 31, 2020, the Company recognized an impairment of $3,080 on its Series Y Preferred shares in Thesys, as the investment had underperformed financially when assessed against prior expectations, resulting in a carrying value of $0 at December 31, 2020.

WisdomTree Japan
The Company recorded an impairment expense of $572 in connection with the termination of its Japan office lease during the year ended December 31, 2019 in connection with the closure of WTJ.