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VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2012
Valuation and Qualifying Accounts [Abstract]  
VALUATION AND QUALIFYING ACCOUNTS
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
 
For each of the three years in the period ended December 31, 2012
(Amounts in thousands)
                                 
Column A - Description
  
Column B
    
Column C - Additions
    
Column D
      
Column E
  
   
Balance at
beginning
of period
    
(1)
Charged to
costs and
expenses
    
(2)
Charged to
other
accounts
    
Deductions
      
Balance
at end of
period
  
                                 
Year ended December 31, 2012
                                
Allowance for doubtful accounts receivable
   $ 2,757     $ 80     $ —     $ 2,245
(b)
 
   $ 592  
                                           
Allowance for obsolete inventory
   $ 617     $ 323     $ —     $ 192
(c)
 
   $ 748  
                                           
Year ended December 31, 2011
                                          
Allowance for doubtful accounts receivable
   $ 2,413     $ 348     $ —     $ 4
(b)
 
   $ 2,757  
                                           
Allowance for obsolete inventory
   $ 569     $ 89     $ —     $ 41
(c)
 
   $ 617  
                                           
Year ended December 31, 2010
                                          
Allowance for doubtful accounts receivable
   $ 384     $ 2,060     $ —     $ 31
(b)
 
   $ 2,413  
                                           
Allowance for obsolete inventory
   $ 670     $ —     $ —     $
18
83
(a)
(c)
 
   $ 569  
 
(a) - reduction in allowance for obsolete inventory amounts
(b) - write-off of uncollectible amounts
(c) - disposal of inventory