Derivative Instruments (tables)

9 Months Ended

Sep. 30, 2011

Summary Of Derivative Instruments Abstract

Income Statement Presentation of Derivative Instruments [Text Block]

		Three Months Ended
		September 30, 2011								September 30, 2010
Thousands			Natural gas commodity	(1)		Foreign currency	(2)		Natural gas commodity	(1)		Foreign currency(2)
Cost of sales		$	(18,987)		$	-		$	(35,744)		$	-
Other comprehensive income (loss)			-			(1,221)			-			449
Less:
Amounts deferred to regulatory accounts on balance sheet			18,987			1,221			35,744			(449)
	Total impact on earnings	$	-		$	-		$	-		$	-
		Nine Months Ended
		September 30, 2011								September 30, 2010
Thousands			Natural gas commodity	(1)		Foreign currency	(2)		Natural gas commodity	(1)		Foreign currency(2)
Cost of sales		$	(49,106)		$	-		$	(84,837)		$	-
Other comprehensive income (loss)			-			(815)			-			110
Less:
Amounts deferred to regulatory accounts on balance sheet			49,106			815			84,837			(110)
	Total impact on earnings	$	-		$	-		$	-		$	-
(1)	Unrealized gain (loss) from natural gas commodity hedge contracts is recorded in cost of sales and reclassified to regulatory deferral accounts on the balance sheet.
(2)	Unrealized gain (loss) from foreign currency exchange contracts is recorded in other comprehensive income, and reclassified to regulatory deferral accounts on the balance sheet.

Credit Rating Downgrade Scenarios [Text Block]

				Credit Rating Downgrade Scenarios
Thousands		(Current Ratings) A+/A3		BBB+/Baa1		BBB/Baa2		BBB-/Baa3		Speculative
With Adequate Assurance Calls	$	-	$	-	$	-	$	5,609	$	37,171
Without Adequate Assurance Calls	$	-	$	-	$	-	$	4,581	$	31,143