Derivative Instruments (tables)

12 Months Ended

Dec. 31, 2011

Summary Of Derivative Instruments Abstract

Income Statement Presentation of Derivative Instruments [Text Block]

		2011								2010
Thousands		Natural gas commodity		(1)	Foreign exchange		(2)	Natural gas commodity		(1)	Foreign exchange ⁽²⁾
Cost of sales		$	(60,799)		$	-		$	(52,677)		$	-
Other comprehensive income (loss)			-			(201)			-			91
Less:
Amounts deferred to regulatory accounts on balance sheet			60,799			201			52,677			(91)
	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 exchange forward purchase 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	$	-	$	-	$	2,013	$	9,585	$	45,869
Without Adequate Assurance Calls	$	-	$	-	$	851	$	5,923	$	37,206

- 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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