Common Stock Common Stock (Notes)

9 Months Ended

Sep. 30, 2016

Stockholders' Equity Note [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

COMMON STOCK

In March 2016, the Company entered into four separate sales agency agreements under which the sales agents, as Avista Corp.’s agents, may offer and sell up to 3.8 million new shares of Avista Corp.'s common stock, no par value, from time to time. The sales agency agreements expire on February 29, 2020. As of September 30, 2016, 1.6 million shares have been issued under these agreements resulting in total net proceeds of $65.6 million, leaving 2.2 million shares remaining to be issued.

In the nine months endedSeptember 30, 2016, Avista Corp. also issued 0.3 million shares of common stock for total net proceeds of $1.2 million in share-based compensation.