v2.4.0.8
Property and Equipment, Net
 12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property and Equipment, net
NOTE 3.
Property and Equipment, Net

Property and equipment, which includes assets under capital lease, consists of the following:
 
 
December 31,
 
 
2013
 
2012
 
 
(in thousands)
Computer equipment
 
$
27,464

 
$
18,798

Computer software
 
9,277

 
6,327

Furniture, fixtures and equipment
 
2,031

 
1,545

Scanner appliances
 
17,055

 
16,470

Leasehold improvements
 
2,100

 
1,672

Total property and equipment
 
57,927

 
44,812

Less: accumulated depreciation and amortization
 
(34,852
)
 
(26,664
)
Property and equipment, net
 
$
23,075

 
$
18,148



Assets held under capital lease included in computer software at December 31, 2013 and 2012 totaled approximately $3.1 million and $3.8 million, respectively. The related accumulated depreciation at December 31, 2013 and 2012 totaled $1.2 million. The capital lease obligations are secured by the related software.

Physical scanner appliances and other computer equipment that are or will be subject to subscriptions by customers have a net carrying value of $4.7 million and $5.5 million at December 31, 2013 and 2012, respectively, including assets that have not been placed in service of $0.6 million and $1.5 million, respectively. Other fixed assets not placed in service at December 31, 2013 and 2012, included in computer equipment and leasehold improvements, relate to new information technology systems and tenant improvements of approximately $1.6 million and $1.7 million, respectively. Depreciation and amortization expense relating to property and equipment, including capitalized leases, was $9.2 million, $6.9 million and $4.9 million for 2013, 2012 and 2011, respectively.