At December 31,

 

 

    

2016

    

2015

Cost:

 

 

 

 

 

 

 

Computer equipment and software

3 years

 

$
52,921

 

$
44,470

Office furniture and fixtures

3-7 years

 

 
6,911

 

 
5,785

Leasehold improvements

Shorter of the lease term or useful life of the asset

 

 
17,286

 

 
15,123

Other office equipment

3-5 years

 

 
1,367

 

 
683

 

 

 

 
78,485

 

 
66,061

Less accumulated depreciation and amortization

 

 

 
(45,485)

 

 
(37,380)

Property and equipment, net

 

 

$
33,000

 

$
28,681