Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2012

Effect of Derivative Instruments on Statement of Operations

The effect of derivative instruments on the statement of operations for the years ended December 31 is as follows (in thousands):


	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)									Amount Reclassified from Accumulated OCI into Income
Derivatives in Cash Flow Hedging Relationships	2012		2011			2010			Location of Amount Reclassified from Accumulated OCI into Income	2012		2011		2010
Interest rate swaps	$	—	$	(447	)	$	(6,720	)	Interest expense, net of amounts capitalized	$	—	$	12,674	$	20,154
Natural gas swaps		—		(533	)		(521	)	Operating costs		—		759		295

Total	$	—	$	(980	)	$	(7,241	)	Total	$	—	$	13,433	$	20,449


		Amount of Gain Recognized in Income on Derivative
Derivatives Not Designated as Hedging Instruments	Location of Gain Recognized in Income on Derivatives	2012		2011		2010
Natural gas swaps	Other gains and (losses), net	$	—	$	—	$	202

- Definition

Tabular disclosure of the location and amount of gains and losses reported in the statement of financial performance, or when applicable, the statement of financial position. For example, (a) gains and losses recognized in the income statement on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges and (b) gains and losses initially recognized in other comprehensive income on derivative instruments designated and qualifying as cash flow hedges.

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