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Earnings Per Common Share Attributable To Avista Corporation (Tables)
12 Months Ended
Dec. 31, 2016
Earnings Per Share [Abstract]  
Computations Of Earnings Per Share
 
2016
 
2015
 
2014
Numerator:
 
 
 
 
 
Net income from continuing operations attributable to Avista Corp. shareholders
$
137,228

 
$
118,080

 
$
119,817

Net income from discontinued operations attributable to Avista Corp. shareholders

 
5,147

 
72,224

Subsidiary earnings adjustment for dilutive securities (discontinued operations)

 

 
5

Adjusted net income from discontinued operations attributable to Avista Corp. shareholders for computation of diluted earnings per common share
$

 
$
5,147

 
$
72,229

Denominator:
 
 
 
 
 
Weighted-average number of common shares outstanding-basic
63,508

 
62,301

 
61,632

Effect of dilutive securities:
 
 
 
 
 
Performance and restricted stock awards
412

 
407

 
255

Weighted-average number of common shares outstanding-diluted
63,920

 
62,708

 
61,887

Earnings per common share attributable to Avista Corp. shareholders, basic:
 
 
 
 
 
Earnings per common share from continuing operations
$
2.16

 
$
1.90

 
$
1.94

Earnings per common share from discontinued operations
$

 
$
0.08

 
$
1.18

Total earnings per common share attributable to Avista Corp. shareholders, basic
$
2.16

 
$
1.98

 
$
3.12

Earnings per common share attributable to Avista Corp. shareholders, diluted:
 
 
 
 
 
Earnings per common share from continuing operations
$
2.15

 
$
1.89

 
$
1.93

Earnings per common share from discontinued operations
$

 
$
0.08

 
$
1.17

Total earnings per common share attributable to Avista Corp. shareholders, diluted
$
2.15

 
$
1.97

 
$
3.10

There were no shares excluded from the calculation because they were antidilutive.