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SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2013
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS  
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS
For the Years Ended December 31, 2013, 2012 and 2011
(Dollars in thousands)

Description
  Balance at
Beginning
of Year		   Additions
Charged to
Costs and
Expenses		   Deductions   Balance at
End of Year		  

Year Ended December 31, 2013:

                          

Allowance for inventory obsolescence

   $ 9,189     949     —     10,138  

Allowance for doubtful accounts receivable

     94     —     —     94  
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

 

     9,283     949     —     10,232  
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
                   

Year Ended December 31, 2012:

                          

Allowance for inventory obsolescence

   $ 8,248     941     —   $ 9,189  

Allowance for doubtful accounts receivable

     240     —     (146 )   94  
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

 

     8,488     941     (146 )   9,283  
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
                   

Year Ended December 31, 2011:

                          

Allowance for inventory obsolescence

   $ 7,541   $ 707     —   $ 8,248  

Allowance for doubtful accounts receivable

     47     193     —     240  
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

 

     7,588     900     —     8,488  
                   
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​