Derivatives, Hedges, Financial Instruments and Carbon Credits (Tables)

9 Months Ended

Sep. 30, 2012

Derivatives, Hedges, Financial Instruments and Carbon Credits [Abstract]

Assets and liabilities measured at fair value on recurring basis

	Fair Value Measurements at September 30, 2012 Using
Description	Total Fair Value At September 30, 2012		Quoted Prices in Active Markets  for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value at December 31, 2011
	(In Thousands)
Assets - Supplies, prepaid items and other:
Commodities contracts	$	108	$	108	$	—	$	—	$	11
Carbon credits		224		—		—		224		42
Total	$	332	$	108	$	—	$	224	$	53
Liabilities - Current and noncurrent accrued and other liabilities:
Commodities	$	23	$	23	$	—	$	—	$	—
Contractual obligations - carbon credits		224		—		—		224		42
Interest rate contracts		2,035		—		2,035		—		2,241
Total	$	2,282	$	23	$	2,035	$	224	$	2,283

Reconciliation of the beginning and ending balances for assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3)

	Assets						Liabilities						Assets						Liabilities
	Nine Months Ended September 30,						Nine Months Ended September 30,						Three Months Ended September 30,						Three Months Ended September 30,
	2012			2011			2012			2011			2012			2011			2012			2011
	(In Thousands)
Beginning balance	$	42		$	644		$	(42	)	$	(644	)	$	42		$	9		$	(42	)	$	(7	)
Transfers into Level 3		—			—			—			—			—			—			—			—
Transfers out of Level 3		—			—			—			—			—			—			—			—
Total realized and unrealized gains (losses) included in earnings		248			1,028			(248	)		(936	)		248			(2	)		(248	)		—
Purchases		—			—			—			—			—			—			—			—
Issuances		—			—			—			—			—			—			—			—
Sales		(66	)		(1,665	)		—			—			(66	)		—			—			—
Settlements		—			—			66			1,573			—			—			66			—
Ending balance	$	224		$	7		$	(224	)	$	(7	)	$	224		$	7		$	(224	)	$	(7	)

Realized and unrealized net losses included in earnings and the income statement

	Nine Months Ended September  30,						Three Months Ended September 30,
	2012			2011			2012			2011
	(In Thousands)
Total net gains (losses) included in earnings:
Cost of sales - Commodities contracts	$	85		$	(624	)	$	157		$	(430	)
Cost of sales - Foreign exchange contracts		(19	)		46			(11	)		—
Other income - Carbon credits		248			1,028			248			(2	)
Other expenses - Contractual obligations relating to carbon credits		(248	)		(936	)		(248	)		—
Interest expense - Interest rate contracts		(515	)		(1,825	)		(186	)		(799	)
	$	(449	)	$	(2,311	)	$	(40	)	$	(1,231	)

	Nine Months Ended September 30,						Three Months Ended September 30,
	2012			2011			2012			2011
	(In Thousands)
Change in unrealized gains (losses) relating to contracts still held at period end:
Cost of sales - Commodities contracts	$	85		$	(482	)	$	171		$	(430	)
Other income - Carbon credits		184			7			184			(2	)
Other expenses - Contractual obligations relating to carbon credits		(184	)		(7	)		(184	)		—
Interest expense - Interest rate contracts		206			(635	)		(20	)		(395	)
	$	291		$	(1,117	)	$	151		$	(827	)