Derivative and Hedging Instruments (Tables)

12 Months Ended

Dec. 31, 2011

Derivative and Hedging Instruments (Tables) [Abstract]

Gross Notional Volume of Open Derivatives

	December 31, 2011	December 31, 2010
Commodity derivative contracts	482,545MWh	544,820MWh
Commodity derivative contracts	4,030,000Dth	5,420,000Dth
FTRs	2,382MW	2,609MW

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
December 31, 2011
Commodity derivative contracts	Other current assets	$	177	Other current liabilities	$	3,060
Commodity derivative contracts	Other deferred charges		92	Other deferred liabilities		231
FTRs	Other current assets		186	Other current liabilities		0
Ten-year PPA	N/A		N/A	Other current liabilities		4,600
Ten-year PPA	N/A		N/A	Other deferred liabilities		34,920
December 31, 2010
Commodity derivative contracts	Other current assets	$	649	Other current liabilities	$	1,227
Commodity derivative contracts	Other deferred charges		214	Other deferred liabilities		167
FTRs	Other current assets		312	Other current liabilities		0
Ten-year PPA	N/A		N/A	Other deferred liabilities		19,010

Derivative Gains and Losses in Balance Sheet

		2011				2010
(In thousands)		Current and long-term regulatory asset		Other current assets		Current and long-term regulatory asset		Other current assets
Year Ended December 31:
Balance at January 1,	$	19,230	$	1,411	$	12,542	$	1,334
Change in unrealized loss		24,988		0		10,851		0
Realized loss reclassified to a deferred account		(3,190)		3,190		(2,868)		2,868
Realized loss reclassified to income statement		1,328		(2,997)		(1,295)		(2,791)
Balance at December 31,	$	42,356	$	1,604	$	19,230	$	1,411

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
Year Ended December 31, 2011:
Commodity derivative contracts	$	0	$	(258)	$	2,194
FTRs		0		(267)		0
Ten-year PPA		0		0		0
Year Ended December 31, 2010:
Commodity derivative contracts	$	0	$	2,570	$	1,652
FTRs		0		(136)		0
Ten-year PPA		0		0		0