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Discontinued Operations Discontinued Operations (Notes)
12 Months Ended
Dec. 31, 2017
Discontinued Operations [Abstract]  
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
DISCONTINUED OPERATIONS
On June 30, 2014, Avista Capital, completed the sale of its interest in Ecova to Cofely USA Inc., an unrelated party to Avista Corp. The sales price was $335.0 million in cash, less the payment of debt and other customary closing adjustments. At the closing of the transaction on June 30, 2014, Ecova became a wholly-owned subsidiary of Cofely USA Inc. and the Company has not had and will not have any further involvement with Ecova after such date.
The purchase price of $335.0 million, as adjusted, was divided among all the security holders of Ecova pro rata based on ownership. After consideration of all escrow amounts received, the sales transaction provided cash proceeds to Avista Corp., net of debt, payment to option and minority holders, income taxes and transaction expenses, of $143.7 million, and resulted in a net gain of $74.8 million. Almost all of the net gain was recognized in 2014 with some true-ups during 2015.
Prior to the completion of the sales transaction, Ecova was a reportable business segment. There were no amounts recorded for discontinued operations during the years ended December 31, 2017 and 2016. The following table presents amounts that were included in discontinued operations for the year ended December 31, 2015 (dollars in thousands):
 
2015
Revenues
$

Gain on sale of Ecova (1)
777

Transaction expenses and accelerated employee benefits
71

Gain on sale of Ecova, net of transaction expenses
706

 
 
Income before income taxes
706

Income tax benefit (2)
(4,441
)
Net income from discontinued operations
5,147

Net income attributable to noncontrolling interests

Net income from discontinued operations attributable to Avista Corp. shareholders
$
5,147


(1)
This represents the gross gain recorded to discontinued operations. The total gain net of taxes and transactions expenses was $74.8 million, of which $69.7 million was recognized during 2014.
(2)
The tax benefit during 2015 primarily resulted from the reversal of a valuation allowance against net operating losses at Ecova because the net operating losses were deemed realizable after further evaluation.