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Cost of Contracts, net
 12 Months Ended
Dec. 31, 2013
Cost of Contracts, net  
Cost of Contracts, net

Note E. Cost of Contracts, net

        Cost of contracts, net is comprised of the following:

 
   December 31,  
 
   2013   2012  

Cost of contracts

   $ 25,607   $ 26,599  

Accumulated amortization

     (14,845 )   (12,384 )
           
​ ​ ​ ​ ​ ​ ​ ​

Cost of contracts, net

   $ 10,762   $ 14,215  
           
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
           

        The expected future amortization of cost of contracts is as follows:

 
   Cost of Contract  

2014

     2,355  

2015

     1,967  

2016

     1,789  

2017

     1,677  

2018

     1,437  

2019 and Thereafter

     1,537  
       
​ ​ ​ ​ ​

Total

   $ 10,762  
       
​ ​ ​ ​ ​
​ ​ ​ ​ ​
       

        Amortization expense related to cost of contracts was $2,788, $3,142 and $2,275 for the years ended December 31, 2013, 2012 and 2011, respectively. During 2013, 2012 and 2011, there was no additional amortization expense recorded relating to losses of contracts that were previously capitalized. The weighted average useful life was 9.6 years, 9.5 years and 9.7 years as of December 31, 2013, 2012 and 2011, respectively.