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Schedule II Valuation and Qualifying Accounts
12 Months Ended
Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]  
Schedule II Valuation and Qualifying Accounts

SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS

 

     Balance at
Beginning
of Period
     Charged to
Costs and
Expenses
     Deductions/
Write-offs
(Recoveries)
    Balance at
End of
Period
 
     (In thousands)  

Year ended December 31, 2014

          

Allowance for doubtful accounts

   $ 9       $ 16       $ (3   $ 28   

Year ended December 31, 2013

          

Allowance for doubtful accounts

   $ 134       $ 8       $ 133      $ 9   

Year ended December 31, 2012

          

Allowance for doubtful accounts

   $             21       $             113       $             0      $             134