Derivative and Hedging Instruments (Tables)

3 Months Ended

Mar. 31, 2012

Derivative and Hedging Instruments (Tables) [Abstract]

Gross Notional Volume of Open Derivatives

	March 31, 2012	December 31, 2011
Commodity derivative contracts	451,750 MWh	482,545 MWh
Commodity derivative contracts	2,970,000 Dth	4,030,000 Dth
FTRs	962 MW	2,382 MW

Fair Value of Derivative Instruments on the Balance Sheet

	Asset Derivatives			Liability Derivatives
(In thousands)	Balance Sheet Location		Fair Value	Balance Sheet Location		Fair Value
March 31, 2012
Commodity derivative contracts	Other current assets	$	266	Derivative liability (current)	$	2,723
Commodity derivative contracts	Other deferred charges		153	Derivative liability (long-term)		160
FTRs	Other current assets		0	Derivative liability (current)		40
Ten-year PPA	N/A		N/A	Derivative liability (current)		8,130
Ten-year PPA	N/A		N/A	Derivative liability (long-term)		60,880
December 31, 2011
Commodity derivative contracts	Other current assets	$	177	Derivative liability (current)	$	3,060
Commodity derivative contracts	Other deferred charges		92	Derivative liability (long-term)		231
FTRs	Other current assets		186	Derivative liability (current)		0
Ten-year PPA	N/A		N/A	Derivative liability (current)		4,600
Ten-year PPA	N/A		N/A	Derivative liability (long-term)		34,920

Derivative Gains and Losses in Balance Sheet

		2012				2011
(In thousands)		Current and long-term regulatory asset		Other current assets		Current and long-term regulatory asset		Other current assets
Three Months Ended March 31:
Balance at January 1,	$	42,356	$	1,604	$	19,230	$	1,411
Change in unrealized loss		33,310		0		3,047		0
Realized loss reclassified to a deferred account		(2,658)		2,658		(663)		663
Realized gain (loss) reclassified to income
statement		(1,494)		(3,590)		63		(1,569)
Balance at March 31,	$	71,514	$	672	$	21,677	$	505

Derivative Gains and Losses in Income Statement

		Realized losses (gains)
				Fuel for electric
		Regulated		generation/		Cost of
(In thousands)		gas revenues		purchased power		gas sold
Three Months Ended March 31, 2012:
Commodity derivative contracts	$	0	$	1,928	$	3,090
FTRs		0		66		0
Ten-year PPA		0		0		0
Three Months Ended March 31, 2011:
Commodity derivative contracts	$	0	$	254	$	1,315
FTRs		0		(63)		0
Ten-year PPA		0		0		0