Information By Business Segments (Tables)

12 Months Ended

Dec. 31, 2011

Information By Business Segments [Abstract]

Information By Business Segments

	Avista Utilities		Ecova		Other			Total Non-Utility		Intersegment Eliminations (1)			Total
For the year ended December 31, 2011:
Operating revenues	$	1,443,322	$	137,848	$	40,410		$	178,258	$	(1,800	)	$	1,619,780
Resource costs		790,048		—		—			—		—			790,048
Other operating expenses		255,326		109,738		33,897			143,635		(1,800	)		397,161
Depreciation and amortization		105,629		7,193		778			7,971		—			113,600
Income from operations		208,970		20,917		5,735			26,652		—			235,622
Interest expense (2)		69,347		305		4,943			5,248		(387	)		74,208
Income taxes		48,964		7,852		(184	)		7,668		—			56,632
Net income (loss) attributable to Avista Corporation		90,902		9,671		(349	)		9,322		—			100,224
Capital expenditures		239,782		2,998		592			3,590		—			243,372
For the year ended December 31, 2010:
Operating revenues	$	1,419,646	$	102,035	$	61,067		$	163,102	$	(24,008	)	$	1,558,740
Resource costs		795,075		—		—			—		—			795,075
Other operating expenses		242,521		80,100		53,846			133,946		(24,008	)		352,459
Depreciation and amortization		100,554		6,070		1,002			7,072		—			107,626
Income from operations		208,104		15,865		6,219			22,084		—			230,188
Interest expense (2)		70,867		276		5,530			5,806		(249	)		76,424
Income taxes		46,428		5,679		(950	)		4,729		—			51,157
Net income (loss) attributable to Avista Corporation		86,681		7,433		(1,689	)		5,744		—			92,425
Capital expenditures		202,227		1,932		497			2,429		—			204,656
For the year ended December 31, 2009:
Operating revenues	$	1,395,201	$	77,275	$	40,089		$	117,364	$	—		$	1,512,565
Resource costs		799,539		—		—			—		—			799,539
Other operating expenses		229,907		60,985		45,118			106,103		—			336,010
Depreciation and amortization		93,783		4,687		1,305			5,992		—			99,775
Income (loss) from operations		195,389		11,603		(6,334	)		5,269		—			200,658
Interest expense (2)		66,688		302		231			533		(187	)		67,034
Income taxes		44,480		3,969		(2,126	)		1,843		—			46,323
Net income (loss) attributable to Avista Corporation		86,744		5,329		(5,002	)		327		—			87,071
Capital expenditures		205,384		3,031		89			3,120		—			208,504
Total Assets:
As of December 31, 2011	$	3,809,446	$	292,940	$	112,145		$	405,085	$	—		$	4,214,531
As of December 31, 2010	$	3,589,235	$	221,086	$	129,774		$	350,860	$	—		$	3,940,095

(1) Intersegment eliminations reported as operating revenues and resource costs represent intercompany purchases and sales of electric capacity and energy. Intersegment eliminations reported as interest expense represent intercompany interest.

(2) Including interest expense to affiliated trusts.