GSE SYSTEMS INC | 2013 | FY | 3

Software development costs, net consist of the following:

(in thousands)
 
December 31,
 
 
 
2013
  
2012
  
2011
 
Beginning Balance
 
$
2,426
  
$
1,815
  
$
1,790
 
Additions
  
1,309
   
1,315
   
838
 
Amortization
  
(541
)
  
(704
)
  
(813
)
Impairments
  
(2,174
)
  
-
   
-
 
Ending Balance
 
$
1,020
  
$
2,426
  
$
1,815
 
 
            

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