Consolidated Statements of Income Statement - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Revenues:
General business	$ 1,151,038	$ 1,122,281	$ 1,101,728
Off-system sales	30,887	77,165	54,473
Other revenues	85,580	79,205	86,897
Total electric utility revenues	1,267,505	1,278,651	1,243,098
Other	2,784	3,873	3,116
Total operating revenues	1,270,289	1,282,524	1,246,214
Operating Expenses:
Purchased power	226,470	244,628	220,579
Fuel expense	186,231	201,241	214,482
Power cost adjustment	16,766	22,235	(39,537)
Other operations and maintenance	342,146	354,567	348,867
Energy efficiency programs	30,532	27,154	35,636
Depreciation	138,110	132,987	129,735
Taxes other than income taxes	32,808	31,748	30,561
Total electric utility expenses	973,063	1,014,560	940,323
Other	15,129	14,268	14,149
Total operating expenses	988,192	1,028,828	954,472
Operating Income	282,097	253,696	291,742
Other Income (Expense):
Allowance for equity funds used during construction	21,785	17,931	14,858
Earnings Losses of Unconsolidated Equity-Method Investments	11,128	12,372	11,939
Other income, net	7,159	6,328	17,013
Total other income	25,905	21,554	29,440
Interest Expense:
Interest on long-term debt	83,056	80,562	81,492
Other interest	8,922	7,703	7,203
Allowance for borrowed funds used during construction	(10,044)	(8,464)	(7,663)
Total interest expense, net	81,934	79,801	81,032
Income Before Income Taxes	240,235	210,526	254,520
Income Tax Expense (Benefit)	45,760	16,772	72,226
Net Income	194,475	193,754	182,294
Adjustment for (income) loss attributable to noncontrolling interests	204	(274)	123
Net Income Attributable to IDACORP, Inc.	$ 194,679	$ 193,480	$ 182,417
Weighted Average Common Shares Outstanding - Basic (000’s) (in shares)	50,220	50,131	50,052
Weighted Average Common Shares Outstanding - Diluted (000’s) (in shares)	50,292	50,199	50,126
Earnings Per Share of Common Stock:
Earnings Attributable to IDACORP, Inc. - Basic (in dollars per share)	$ 3.88	$ 3.86	$ 3.64
Earnings Attributable to IDACORP, Inc. - Diluted (in dollars per share)	$ 3.87	$ 3.85	$ 3.64
Idaho Power Company
Operating Revenues:
General business	$ 1,151,038	$ 1,122,281	$ 1,101,728
Off-system sales	30,887	77,165	54,473
Other revenues	85,580	79,205	86,897
Total electric utility revenues	1,267,505	1,278,651	1,243,098
Operating Expenses:
Purchased power	226,470	244,628	220,579
Fuel expense	186,231	201,241	214,482
Power cost adjustment	16,766	22,235	(39,537)
Other operations and maintenance	342,146	354,567	348,867
Energy efficiency programs	30,532	27,154	35,636
Depreciation	138,110	132,987	129,735
Taxes other than income taxes	32,808	31,748	30,561
Total electric utility expenses	973,063	1,014,560	940,323
Operating Income	294,442	264,091	302,775
Other Income (Expense):
Allowance for equity funds used during construction	21,785	17,931	14,858
Earnings Losses of Unconsolidated Equity-Method Investments	9,773	10,814	10,242
Other income, net	(5,071)	(4,363)	5,772
Total other income	26,487	24,382	30,872
Interest Expense:
Interest on long-term debt	83,056	80,562	81,492
Other interest	8,706	7,472	6,817
Allowance for borrowed funds used during construction	(10,044)	(8,464)	(7,663)
Total interest expense, net	81,718	79,570	80,646
Income Before Income Taxes	239,211	208,903	253,001
Income Tax Expense (Benefit)	48,228	19,516	76,260
Net Income	$ 190,983	$ 189,387	$ 176,741