Condensed Consolidated Statements of Income Statement - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Revenues:
Electric utility revenues	$ 315,568	$ 290,488
Other operating revenues	486	520
Total operating revenues	316,054	291,008
Operating Expenses:
Purchased power	67,988	61,201
Fuel expense	33,306	30,015
Power cost adjustment	5,671	(3,391)
Other operations and maintenance	85,657	89,808
Energy efficiency programs	9,027	9,475
Depreciation	43,315	42,526
Taxes other than income taxes	9,327	9,141
Total electric utility expenses	254,291	238,775
Other	654	663
Total operating expenses	254,945	239,438
Operating Income	61,109	51,570
Nonoperating (Income) Expense:
Allowance for equity funds used during construction	(7,769)	(7,272)
Earnings of equity-method investments	(2,317)	(2,316)
Interest on long-term debt	21,036	19,662
Other interest	3,519	3,812
Allowance for borrowed funds used during construction	(3,005)	(2,730)
Other Income (Expense), Net	(241)	(932)
Total nonopearting expense, net	11,223	10,224
Income Before Income Taxes	49,886	41,346
Income Tax Expense	5,086	3,888
Net Income	44,800	37,458
Loss attributable to noncontrolling interests	31	32
Net Income Attributable to IDACORP, Inc.	$ 44,831	$ 37,490
Weighted-average common shares outstanding - basic	50,567	50,517
Weighted-average common shares outstanding - diluted	50,580	50,527
Earnings Per Share of Common Stock:
Earnings attributable to IDACORP, Inc. - basic (in dollars per share)	$ 0.89	$ 0.74
Earnings attributable to IDACORP, Inc. - diluted (in dollars per share)	$ 0.89	$ 0.74
Idaho Power Company
Operating Expenses:
Purchased power	$ 67,988	$ 61,201
Fuel expense	33,306	30,015
Power cost adjustment	5,671	(3,391)
Other operations and maintenance	85,657	89,808
Energy efficiency programs	9,027	9,475
Depreciation	43,315	42,526
Taxes other than income taxes	9,327	9,141
Total electric utility expenses	254,291	238,775
Operating Income	61,277	51,713
Nonoperating (Income) Expense:
Allowance for equity funds used during construction	(7,769)	(7,272)
Earnings of equity-method investments	(2,550)	(2,453)
Interest on long-term debt	21,036	19,662
Other interest	3,514	3,813
Allowance for borrowed funds used during construction	(3,005)	(2,730)
Other Income (Expense), Net	(191)	(469)
Total nonopearting expense, net	11,035	10,551
Income Before Income Taxes	50,242	41,162
Income Tax Expense	5,873	4,386
Net Income	$ 44,369	$ 36,776