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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment

8. Property, Plant and Equipment

Property, plant and equipment, net consisted of the following at December 31 (in thousands):

 

     Estimated
Useful Lives
(in Years)
   2015      2014  

Computer hardware and software

   3 to 5    $ 131,409       $ 100,383   

Card-reading equipment

   5      10,887         13,066   

Furniture, fixtures, and vehicles

   5      10,291         10,319   

Buildings and improvements

   5 to 7      10,982         11,294   
     

 

 

    

 

 

 

Property, plant and equipment, gross

        163,569         135,062   

Less: accumulated depreciation

        (82,809      (61,499
     

 

 

    

 

 

 

Property, plant and equipment, net

      $ 80,760       $ 73,563   
     

 

 

    

 

 

 

Depreciation expense related to property and equipment for the years ended December 31, 2015, 2014 and 2013 was $30.5 million, $21.1 million and $16.9 million, respectively. Depreciation expense includes $11.6 million, $9.2 million and $7.3 million, for capitalized computer software costs for the years ended December 31, 2015, 2014 and 2013, respectively. At December 31, 2015 and 2014, the Company had unamortized computer software costs of $44.9 million and $33.0 million, respectively.