Financial Instruments And Investments (Tables)

9 Months Ended

Sep. 30, 2011

Financial Instruments And Investments [Abstract]

Fair Values Of Long-Term Debt And Financing Obligations

Long-Term Debt and Short-Term Borrowings Under the RCF. The fair values of the Company’s long-term debt and short-term borrowings under the RCF are based on estimated market prices for similar issues and are presented below (in thousands):

	September 30, 2011				December 31, 2010
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Pollution Control Bonds	$	193,135	$	207,552	$	193,135	$	192,924
Senior Notes	546,649		603,490		546,610		574,700
RGRT Senior Notes (1)	110,000		115,235		110,000		110,371
RCF (1)	17,793		17,793		4,704		4,704
Total	$	867,577	$	944,070	$	854,449	$	882,699

Marketable Securities Fair Value And Unrealized Losses

The tables below present the gross unrealized losses and the fair value of these securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):

	September 30, 2011
	Less than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Description of Securities (1):
Federal Agency Mortgage Backed Securities	$	4,431	$	(28	)	$	—	$	—		$	4,431	$	(28	)
U.S. Government Bonds	1,938		(28		)	—		—			1,938		(28		)
Municipal Obligations	7,979		(180		)	2,571		(45		)	10,550		(225		)
Corporate Obligations	4,423		(159		)	92		(4		)	4,515		(163		)
Total Debt Securities	18,771		(395		)	2,663		(49		)	21,434		(444		)
Common Stock	20,284		(3,000		)	2,255		(760		)	22,539		(3,760		)
Total Temporarily Impaired Securities	$	39,055	$	(3,395	)	$	4,918	$	(809	)	$	43,973	$	(4,204	)

(1) Includes approximately 127 securities.

	December 31, 2010
	Less than 12 Months					12 Months or Longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Description of Securities (2):
Federal Agency Mortgage Backed Securities	$	2,290	$	(51	)	$	441	$	(27	)	$	2,731	$	(78	)
U.S. Government Bonds	9,583		(124		)	—		—			9,583		(124		)
Municipal Obligations	13,145		(278		)	3,763		(145		)	16,908		(423		)
Corporate Obligations	1,855		(18		)	—		—			1,855		(18		)
Total Debt Securities	26,873		(471		)	4,204		(172		)	31,077		(643		)
Common Stock	6,943		(774		)	4,303		(420		)	11,246		(1,194		)
Total Temporarily Impaired Securities	$	33,816	$	(1,245	)	$	8,507	$	(592	)	$	42,323	$	(1,837	)

Unrecognized Gross Unrealized Gains And the Fair Value

The table below presents the unrecognized gross unrealized gains and the fair value of these securities, aggregated by investment category (in thousands):

	September 30, 2011				December 31, 2010
	Fair Value		Unrealized Gains		Fair Value		Unrealized Gains
Description of Securities:
Federal Agency Mortgage Backed Securities	$	24,272	$	1,251	$	18,472	$	793
U.S. Government Bonds	10,437		1,034		10,450		183
Municipal Obligations	24,417		1,427		15,633		592
Corporate Obligations	7,298		475		7,223		362
Total Debt Securities	66,424		4,187		51,778		1,930
Common Stock	43,225		10,419		56,770		14,142
Cash and Cash Equivalents	4,815		—		3,007		—
Total	$	114,464	$	14,606	$	111,555	$	16,072

Contractual Year For Maturity Of Available-For-Sale Securities

	Total		2011 through 2012		2013 through 2016		2017 through 2021		2022 and Beyond
Municipal Debt Obligations	$	34,967	$	1,321	$	13,035	$	13,043	$	7,568
Corporate Debt Obligations	11,813		1,378		3,893		3,533		3,009
U.S. Government Bonds	12,375		1,320		1,109		6,428		3,518

Unrealized Holding Losses Included In Pre-Tax Income

	Three Months Ended					Nine Months Ended						Twelve Months Ended
	September 30,					September 30,						September 30,
	2011			2010		2011			2010			2011			2010
Gross unrealized holding losses included in pre-tax income	$	(1,547	)	$	—	$	(1,746	)	$	(263	)	$	(1,746	)	$	(408	)

Sale of Securities And The Related Effects On Pre-Tax Income

The proceeds from the sale of these securities and the related effects on pre-tax income are as follows (in thousands):

	Three Months Ended						Nine Months Ended						Twelve Months Ended
	September 30,						September 30,						September 30,
	2011			2010			2011			2010			2011			2010
Proceeds from sales of available-for-sale securities	$	31,435		$	12,731		$	67,841		$	46,936		$	82,561		$	74,799
Gross realized gains included in pre-tax income	$	552		$	95		$	1,248		$	621		$	1,657		$	3,981
Gross realized losses included in pre-tax income	(289		)	(288		)	(583		)	(960		)	(512		)	(1,327		)
Gross unrealized losses included in pre-tax income	(1,547		)	—			(1,746		)	(263		)	(1,746		)	(408		)
Net gains (losses) in pre-tax income	$	(1,284	)	$	(193	)	$	(1,081	)	$	(602	)	$	(601	)	$	2,246
Net unrealized holding gains (losses) included in accumulated other comprehensive income	$	(7,503	)	$	7,019		$	(4,914	)	$	3,041		$	(1,290	)	$	4,619
Net gains (losses) reclassified out of accumulated other comprehensive income	1,284			193			1,081			602			601			(2,246		)
Net gains (losses) in other comprehensive income	$	(6,219	)	$	7,212		$	(3,833	)	$	3,643		$	(689	)	$	2,373

Company's Decommissioning Trust Funds And Investments In Debt Securities

The fair value of the Company’s decommissioning trust funds and investments in debt securities, at September 30, 2011 and December 31, 2010, and the level within the three levels of the fair value hierarchy defined by FASB guidance are presented in the table below (in thousands):

Description of Securities	Fair Value as of September 30, 2011		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Trading Securities:
Investments in Debt Securities	$	2,776	$	—	$	—	$	2,776
Available for sale:
U.S. Government Bonds	$	12,375	$	12,375	$	—	$	—
Federal Agency Mortgage Backed Securities	28,703		—		28,703		—
Municipal Bonds	34,967		—		34,967		—
Corporate Asset Backed Obligations	11,813		—		11,813		—
Subtotal Debt Securities	87,858		12,375		75,483		—
Common Stock	65,764		65,764		—		—
Cash and Cash Equivalents	4,815		4,815		—		—
Total available for sale	$	158,437	$	82,954	$	75,483	$	—

Description of Securities	Fair Value as of December 31, 2010		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Trading Securities:
Investments in Debt Securities	$	2,909	$	—	$	—	$	2,909
Available for sale:
U.S. Government Bonds	$	20,033	$	20,033	$	—	$	—
Federal Agency Mortgage Backed Securities	21,204		—		21,204		—
Municipal Bonds	32,541		—		32,541		—
Corporate Asset Backed Obligations	9,077		—		9,077		—
Subtotal Debt Securities	82,855		20,033		62,822		—
Common Stock	68,016		68,016		—		—
Cash and Cash Equivalents	3,007		3,007		—		—
Total available for sale	$	153,878	$	91,056	$	62,822	$	—