EARNINGS PER SHARE: Level 4 (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net Income Attributable to IDACORP, Inc.	$ 46,260	$ 44,831
Denominator:
Weighted-average common shares outstanding - basic	50,632	50,567
Effect of dilutive securities	28	13
Weighted-average common shares outstanding - diluted	50,660	50,580
Earnings attributable to IDACORP, Inc. - basic (in dollars per share)	$ 0.91	$ 0.89
Earnings attributable to IDACORP, Inc. - diluted (in dollars per share)	$ 0.91	$ 0.89