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Property and Equipment
 9 Months Ended
Sep. 30, 2018
Property Plant And Equipment [Abstract]  
Property and Equipment

5. Property and Equipment

As of September 30, 2018 and December 31, 2017, property and equipment consisted of the following:

 

(in thousands)

 

September 30, 2018

 

 

December 31, 2017

 

Building

 

$

71,780

 

 

$

71,780

 

Computer equipment

 

 

21,412

 

 

 

22,225

 

Leasehold improvements

 

 

59,481

 

 

 

54,004

 

Furniture, fixtures, and other assets

 

 

10,951

 

 

 

10,573

 

Gross property and equipment

 

 

163,624

 

 

 

158,582

 

Less: Accumulated depreciation

 

 

(38,874

)

 

 

(27,251

)

Property and equipment, net

 

$

124,750

 

 

$

131,331

 

 

Depreciation expense was $4.9 million and $14.4 million, during the three and nine months ended September 30, 2018, respectively, and $4.0 million and $11.1 million, during the three and nine months ended September 30, 2017, respectively.