Selected Quarterly Financial Data

12 Months Ended

Dec. 31, 2011

Selected Quarterly Financial Data [Abstract]

Selected Quarterly Financial Data

NOTE 25. SELECTED QUARTERLY FINANCIAL DATA (Unaudited)

The Company's energy operations are significantly affected by weather conditions. Consequently, there can be large variances in revenues, expenses and net income between quarters based on seasonal factors such as, but not limited to, temperatures and streamflow conditions. A summary of quarterly operations (in thousands, except per share amounts) for 2011 and 2010 follows:

	Three Months Ended
	March 31			June 30			September 30			December 31
2011
Operating revenues	$	476,586		$	360,557		$	343,710		$	438,927
Operating expenses		391,761			305,033			308,832			378,532
Income from operations	$	84,825		$	55,524		$	34,878		$	60,395
Net income	$	42,403		$	23,528		$	11,637		$	25,971
Less: Net income attributable to noncontrolling interests		(485	)		(527	)		(935	)		(1,368	)
Net income attributable to Avista Corporation	$	41,918		$	23,001		$	10,702		$	24,603
Outstanding common stock:
Weighted average, basic		57,342			57,787			58,057			58,304
Weighted average, diluted		57,414			58,143			58,232			58,583
Earnings per common share attributable to Avista Corporation, diluted	$	0.73		$	0.39		$	0.18		$	0.42
2010
Operating revenues	$	456,415		$	360,733		$	367,172		$	374,420
Operating expenses		388,591			298,984			329,428			311,549
Income from operations	$	67,824		$	61,749		$	37,744		$	62,871
Net income	$	29,317		$	26,047		$	13,334		$	26,250
Less: Net income attributable to noncontrolling interests		(507	)		(507	)		(988	)		(521	)
Net income attributable to Avista Corporation	$	28,810		$	25,540		$	12,346		$	25,729
Outstanding common stock:
Weighted average, basic		54,869			55,031			55,616			56,835
Weighted average, diluted		55,115			55,231			55,801			57,126
Earnings per common share attributable to Avista Corporation, diluted	$	0.52		$	0.46		$	0.22		$	0.45