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Related Party Transactions (Tables)
 12 Months Ended
Dec. 31, 2017
Related Party Transactions [Abstract]  
Summary of Accounts Receivable from Related Parties

The following table summarizes accounts receivable from related parties which are included as a component of Accounts receivable on the Company’s Consolidated Balance Sheets:

 

     December 31,  
     2017      2016  

Receivable from WTT

    $ 19,433      $ 16,506  

Receivable from BI and WTI

      979        645  

Receivable from WTCS

      97        158  

Receivable from WTAMC

      87        40  
  

 

 

     

 

 

  

Total

    $ 20,596      $ 17,349  
  

 

 

     

 

 

  
Summary of Revenues from Advisory Services Provided to Related Parties

The following table summarizes revenues from advisory services provided to related parties:

 

     Year Ended December 31,  
     2017      2016      2015  

Advisory services provided to WTT

    $ 215,513      $ 209,199      $ 293,788  

Advisory services provided to BI and WTI

      10,288        7,251        4,156  

Advisory services provided to WTCS

      1,508        1,867        —    

Advisory services provided to WTAMC

      466        148        —    
  

 

 

     

 

 

     

 

 

  

Total

    $ 227,775      $ 218,465      $ 297,944