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Shares will be issued at the end of each 3-year cycle if performance measure is met."}],"balance_after":4158,"derivative":{"underlying":"Common Stock","underlying_shares":4158},"source":{"system":"sec-edgar","filing":"0000104918-17-000031","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/104918/000010491817000031/primary_doc.xml","form_type":"4"}},{"id":4470382,"issuer":{"id":145,"kind":"organization","name":"AVISTA CORP","symbol":"AVA"},"owners":[{"id":63776,"kind":"person","name":"Krasselt Ryan L","position":1,"cik":"0001654845","reported_name":"Krasselt Ryan L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President"}}],"security":"Common Stock - Restricted Shares","published_at":"2017-02-03T21:25:23.000Z","date":"2017-02-02","kind":"grant","acquired":true,"shares":1388,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted Shares vest 1/3 each year over a 3-year period and are payable in Avista Corp. Common Stock at the end of each year in the 3-year period."}],"balance_after":5017,"source":{"system":"sec-edgar","filing":"0000104918-17-000031","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/104918/000010491817000031/primary_doc.xml","form_type":"4"}},{"id":4500604,"issuer":{"id":145,"kind":"organization","name":"AVISTA CORP","symbol":"AVA"},"owners":[{"id":63776,"kind":"person","name":"Krasselt Ryan L","position":1,"cik":"0001654845","reported_name":"Krasselt Ryan L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice President"}}],"security":"Common Stock 2014 2015 and 2016 Restricted Stock Awards","published_at":"2017-01-05T17:39:51.000Z","date":"2017-01-03","kind":"tax_withholding","acquired":false,"shares":296,"price":39.71,"value":11754.16,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold to pay income tax on final 1/3 of 2014, second 1/3 of 2015 and first 1/3 of 2016 restricted shares that vested on January 3, 2017."}],"balance_after":3629,"source":{"system":"sec-edgar","filing":"0000104918-17-000005","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/104918/000010491817000005/primary_doc.xml","form_type":"4"}}]}