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Fixed Assets, Net (Tables)
6 Months Ended
Jun. 30, 2019
Property Plant And Equipment [Abstract]  
Components of Fixed Assets, Net

Fixed assets, net consisted of the following (in thousands):

 

 

 

June 30,

2019

 

 

December 31,

2018

 

Leasehold improvements and other fixed assets

 

$

101,885

 

 

$

99,207

 

Software, including software development costs

 

 

28,044

 

 

 

21,417

 

Computer and communications equipment

 

 

20,289

 

 

 

16,605

 

 

 

 

150,218

 

 

 

137,229

 

Accumulated depreciation and amortization

 

 

(66,675

)

 

 

(58,424

)

 

 

$

83,543

 

 

$

78,805