Fair Value Measurements (Tables)
 6 Months Ended
Jun. 30, 2012
Assets Measured at Fair Value on a Recurring Basis, Categorized by the Level of Inputs Used in the Valuation
(Dollars in thousands)
  
Carrying amount as of
June 30, 2012
    
Level 1
    
Level 2
    
Level 3
  
Foreign currency option contracts
   $ -     $ -     $ -     $ -  
                                 
Copper derivative contracts
     (82 )     -       (82 )     -  
Reconciliation of Assets Measured at Fair Value on a Recurring Basis using Unobservable Inputs (Level 3)
The reconciliation of our assets measured at fair value on a recurring basis using unobservable inputs (Level 3) is as follows:

(Dollars in thousands)
  
Auction Rate
Securities
  
Balance at December 31, 2011
   $ 25,960  
Cash received for redemptions at par
     -  
Cash received for redemptions below par
     (25,438 )
Reclassified from other comprehensive income
     2,723  
Reported in earnings
     (3,245 )
Balance at June 30, 2012
   $ -  
Rollforward of Credit Losses Recognized in Earnings
2012.  Below is a roll forward of credit losses recognized in earnings for the six months ended June 30, 2011.

(Dollars in thousands)
      
   
Credit Losses
  
Balance at December 31, 2010
   $ 917  
Credit losses recorded
     39  
Reduction in credit losses due to redemptions
     (71 )
Balance at June 30, 2011
   $ 885