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

12 Months Ended

Dec. 31, 2012

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following details our assets and liabilities that are measured at fair value on a recurring basis at December 31, 2012 and 2011:

			Fair Value Measurements at December 31, 2012 Using
Description	Total Fair Value at December 31, 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	$	79	$	79	$	—	$	—	$	11
Carbon credits		91		—		—		91		42
Total	$	170	$	79	$	—	$	91	$	53
Liabilities—Current and noncurrent accrued and other liabilities:
Contractual obligations -carbon credits	$	91	$	—	$	—	$	91	$	42
Interest rate contracts		1,874		—		1,874		—		2,241
Total	$	1,965	$	—	$	1,874	$	91	$	2,283

Reconciliation of Beginning and Ending Balances for Assets and Liabilities Measured at Fair Value on Recurring Basis

The following is a 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
	2012			2011			2010		2012			2011			2010
	(In Thousands)
Beginning balance	$	42		$	644		$	—	$	(42	)	$	(644	)	$	—
Transfers into Level 3		—			—			—		—			—			—
Transfers out of Level 3		—			—			—		—			—			—
Total realized and unrealized gains (losses) included in earnings		876			1,995			644		(721	)		(1,844	)		(644	)
Purchases		—			—			—		—			—			—
Issuances		—			—			—		—			—			—
Sales		(827	)		(2,597	)		—		—			—			—
Settlements		—			—			—		672			2,446			—
Ending balance	$	91		$	42		$	644	$	(91	)	$	(42	)	$	(644	)
Total gains (losses) for the period included in earnings attributed to the change in unrealized gains or losses on assets and liabilities still held at the reporting date	$	78		$	42		$	644	$	(78	)	$	(42	)	$	(644	)

Realized and Unrealized Net Losses Included in Earnings and Income Statement

Realized and unrealized net losses included in earnings and the income statement classifications are as follows:

	2012			2011			2010
	(In Thousands)
Total net gains (losses) included in earnings:
Cost of sales - Commodities contracts	$	14		$	(523	)	$	(59	)
Cost of sales - Foreign exchange contracts		(19	)		46			25
Other income - Carbon credits		876			1,995			644
Other expense - Contractual obligations relating to carbon credits		(721	)		(1,844	)		(644	)
Interest expense - Interest rate contracts		(523	)		(1,925	)		(1,527	)
	$	(373	)	$	(2,251	)	$	(1,561	)

	2012			2011			2010
	(In Thousands)
Change in unrealized gains (losses) relating to contracts still held at year end:
Cost of sales - Commodities contracts	$	79		$	11		$	761
Cost of sales - Foreign exchange contracts		—			—			49
Other income - Carbon credits		78			42			644
Other expense - Contractual obligations relating to carbon credits		(78	)		(42	)		(644	)
Interest expense - Interest rate contracts		(41	)		(346	)		34
	$	38		$	(335	)	$	844