XML 46 R20.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Earnings Per Common Share Attributable To Avista Corporation | 6 Months Ended
--- | ---
Jun. 30, 2018
Earnings Per Share [Abstract] |
Earnings Per Common Share Attributable To Avista Corporation Shareholders | EARNINGS PER COMMON SHARE ATTRIBUTABLE TO AVISTA CORP. SHAREHOLDERS The following table presents the computation of basic and diluted earnings per common share attributable to Avista Corp. shareholders for the three and six months ended June 30 (in thousands, except per share amounts):
| Three months ended June 30, |  | Six months ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Numerator: |  |  |  |  |  |  |
Net income attributable to Avista Corp. shareholders | $ | 25,577 |  |  | $ | 21,771 |  |  | $ | 80,467 |  |  | $ | 83,887 |
Denominator: |  |  |  |  |  |  |
Weighted-average number of common shares outstanding-basic | 65,677 |  |  | 64,401 |  |  | 65,658 |  |  | 64,382 |
Effect of dilutive securities: |  |  |  |  |  |  |
Performance and restricted stock awards | 306 |  |  | 152 |  |  | 299 |  |  | 129 |
Weighted-average number of common shares outstanding-diluted | 65,983 |  |  | 64,553 |  |  | 65,957 |  |  | 64,511 |
Earnings per common share attributable to Avista Corp. shareholders: |  |  |  |  |  |  |
Basic | $ | 0.39 |  |  | $ | 0.34 |  |  | $ | 1.23 |  |  | $ | 1.30 |
Diluted | $ | 0.39 |  |  | $ | 0.34 |  |  | $ | 1.22 |  |  | $ | 1.30 |
There were no shares excluded from the calculation because they were antidilutive.

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration