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Property and Equipment
12 Months Ended
Dec. 31, 2014
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment
Property and equipment consisted of the following:
 
 
December 31,
 
 
2014
 
2013
Computer hardware and equipment
 
$
13,370

 
$
8,917

Purchased software and licenses
 
5,759

 
3,501

Furniture and fixtures
 
3,116

 
3,014

Leasehold improvements
 
4,064

 
4,020

 
 
26,309

 
19,452

Accumulated depreciation
 
(7,788
)
 
(4,621
)
Property and equipment
 
$
18,521

 
$
14,831


Depreciation expense, including amortization of assets held under capital leases, was $4.0 million, $2.9 million and $1.5 million for the years ended December 31, 2014, 2013 and 2012, respectively. Property and equipment included $3.2 million for assets acquired under capital leases at each of December 31, 2014 and 2013.