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Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2012
Valuation and Qualifying Accounts [Abstract]  
VALUATION AND QUALIFYING ACCOUNTS VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS

 

                                 
    Beginning
of Period		     Costs and
Expenses		     Deductions/
Write-offs		     End of
Period		  
    (In thousands)  

Year ended December 31, 2012

                                

Allowance for doubtful accounts

   $ 21     $ 113     $ 0     $ 134  

Year ended December 31, 2011

                                

Allowance for doubtful accounts

   $ 97     $ (71 )    $ 5     $ 21  

Year ended December 31, 2010

                                

Allowance for doubtful accounts

   $             207     $             (40)     $             70     $             97