Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2011

Derivative Instruments [Abstract]

Fair Value Of Outstanding Derivative Contracts Recorded As Assets

		December 31,
(Dollars in thousands)	Balance Sheet Locations	2011		2010
Derivatives designated as hedging instruments under ASC 815:
Foreign exchange contracts	Other current assets	$	694	$	321
Natural gas contracts	Other current assets		—		2
Foreign exchange contracts	Other assets		94		—
Currency swap	Other assets		—		37
Natural gas contracts	Other assets		—		6
Total derivatives designated as hedging instruments under ASC 815			788		366
Derivatives not designated as hedging instruments under ASC 815:
Foreign exchange contracts	Other current assets		15		34
Total asset derivatives		$	803	$	400

Fair Value Of Outstanding Derivative Contracts Recorded As Liabilities

		December 31,
(Dollars in thousands)	Balance Sheet Locations	2011		2010
Derivatives designated as hedging instruments under ASC 815:
Foreign exchange contracts	Accounts payable and accrued liabilities	$	309	$	243
Natural gas contracts	Accounts payable and accrued liabilities		1,286		1,608
Foreign exchange contracts	Accrued pension and other liabilities		26		34
Natural gas contracts	Accrued pension and other liabilities		209		509
Total derivatives designated as hedging instruments under ASC 815			1,830		2,394
Derivatives not designated as hedging instruments under ASC 815:
Foreign exchange contracts	Accounts payable and accrued liabilities		140		59
Total liability derivatives		$	1,970	$	2,453

Changes In Accumulated OCI Relating To Derivative Assets And Liabilities

	December 31
(Dollars in thousands)	2011			2010
Accumulated OCI derivative loss at January 1	$	2,526		$	3,195
Effective portion of changes in fair value		1,269			826
Reclassifications from accumulated OCI derivative gain to earnings		(2,361	)		(1,322	)
Foreign currency translation		(75	)		(173	)
Accumulated OCI derivative loss at December 31	$	1,359		$	2,526

Derivatives in ASC 815 Cash Flow Hedging Relationships

	Amount of (Gain) or Loss Recognized in OCI on Derivatives (Effective Portion) December 31,
(Dollars in thousands)	2011		2010			2009
Foreign Exchange Contracts	$	22	$	(994	)	$	1,261
Currency Swap		—		—			(506	)
Natural Gas Contracts		1,247		1,820			2,414
Total	$	1,269	$	826		$	3,169

Derivatives in ASC 815 Cash Flow Hedging Relationships

	Location of Gain or (Loss) Recognized in Income on Derivatives	Amount of Gain or (Loss) Reclassified from Accumulated OCI in Income (Effective Portion) December 31,
(Dollars in thousands)		2011			2010			2009
Foreign Exchange Contracts	Cost of products sold	$	(290	)	$	465		$	1,038
Currency Swap	Interest expense		—			(121	)		(35	)
Natural Gas Contracts	Cost of products sold		(2,071	)		(1,666	)		(2,132	)
Total		$	(2,361	)	$	(1,322	)	$	(1,129	)

Derivatives in ASC 815 Cash Flow Hedging Relationships

	Location of Loss Recognized in Income on Derivatives	Amount of Loss Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing) December 31,
(Dollars in thousands)		2011			2010			2009
Foreign Exchange Contracts	Other expense – net	$	(75	)	$	(6	)	$	(20	)
Total		$	(75	)	$	(6	)	$	(20	)

Outstanding Derivative Contracts That Were Entered Into To Hedge Forecasted Transactions

	December 31,
(in thousands except for mmbtu)	2011		2010		2009
Natural gas contracts (mmbtu)		700,000		985,000		1,070,000
Foreign exchange contracts	$	35,304	$	20,727	$	14,552
Currency swap	$	—	$	—	$	3,646

Fair Value Gains And Losses On Contracts Recorded In Earnings

	Location of Loss Recognized in Income on Derivatives	Amount of Loss Recognized in Income on Derivatives December 31,
(Dollars in thousands)		2011			2010			2009
Foreign Exchange Contracts *	Other expense – net	$	(189	)	$	(234	)	$	(294	)
Total		$	(189	)	$	(234	)	$	(294	)

* As of December 31, 2011, 2010 and 2009, these foreign exchange contracts were entered into and settled during the respective periods.