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Fair Value Measurements (Tables)
9 Months Ended
Sep. 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 September 30, 2012
 
Level 1
 
Level 2
 
Level 3
Foreign currency option contracts
$
28

 
$

 
$
28

 
$

Copper derivative contracts
3

 

 
3

 

Interest rate swap
(355
)
 

 
(355
)
 

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 below par
(25,438
)
Reclassified from other comprehensive income
2,723

Reported in earnings
(3,245
)
Balance at September 30, 2012
$

Rollforward of Credit Losses Recognized in Earnings
Below is a roll forward of credit losses recognized in earnings for the nine months ended September 30, 2011.

(Dollars in thousands)
Credit Losses
Balance at December 31, 2010
$
917

Credit losses recorded
286

Reduction in credit losses due to redemptions
(83
)
Balance at September 30, 2011
$
1,120