Condensed Consolidated Statements of Income Statement (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Operating Revenues:
General business	$ 306,066	$ 252,313	$ 724,025	$ 649,881
Off-system sales	4,826	24,083	43,953	74,648
Other revenues	21,865	31,649	58,810	68,502
Total electric utility revenues	332,757	308,045	826,788	793,031
Other	1,262	1,585	3,074	3,076
Total operating revenues	334,019	309,630	829,862	796,107
Operating Expenses:
Purchased power	71,570	66,141	151,026	127,658
Fuel expense	55,978	41,195	110,014	90,801
Power cost adjustment	(42,871)	(10,189)	(37,074)	36,618
Other operations and maintenance	89,968	84,562	254,487	240,695
Energy efficiency programs	8,410	18,504	20,971	31,011
Depreciation	31,607	30,115	92,028	89,272
Taxes other than income taxes	7,012	7,302	22,961	21,696
Total electric utility expenses	221,674	237,630	614,413	637,751
Other	1,002	607	2,961	2,573
Total operating expenses	222,676	238,237	617,374	640,324
Operating Income	111,343	71,393	212,488	155,783
Other Income (Expense):
Other (expense) income, net	2,928	6,010	16,091	15,589
Earnings (Losses) of Unconsolidated Equity-Method Investments	1,304	2,085	795	(3,657)
Interest Expense:
Interest on long-term debt	19,670	19,499	59,252	59,850
Other interest, net of AFUDC	(269)	(2,053)	(5,209)	(5,876)
Total interest expense, net	19,401	17,446	54,043	53,974
Income Before Income Taxes	96,174	62,042	175,331	113,741
Income Tax (Benefit) Expense	3,910	(45,372)	22,812	(44,137)
Net Income	92,264	107,414	152,519	157,878
Adjustment for (income) loss attributable to noncontrolling interests	(195)	(347)	(220)	(170)
Net Income Attributable to IDACORP, Inc.	92,069	107,067	152,299	157,708
Weighted Average Common Shares Outstanding - Basic (000’s)	49,966	49,520	49,918	49,411
Weighted Average Common Shares Outstanding - Diluted (000’s)	50,080	49,622	49,990	49,499
Earnings Per Share of Common Stock:
Earnings Attributable to IDACORP, Inc. - Basic	$ 1.84	$ 2.16	$ 3.05	$ 3.19
Earnings Attributable to IDACORP, Inc. - Diluted	$ 1.84	$ 2.16	$ 3.05	$ 3.19
Dividends Declared Per Share of Common Stock	$ 0.33	$ 0.30	$ 0.99	$ 0.90
Idaho Power Company
Operating Revenues:
General business	306,066	252,313	724,025	649,881
Off-system sales	4,826	24,083	43,953	74,648
Other revenues	21,865	31,649	58,810	68,502
Total electric utility revenues	332,757	308,045	826,788	793,031
Operating Expenses:
Purchased power	71,570	66,141	151,026	127,658
Fuel expense	55,978	41,195	110,014	90,801
Power cost adjustment	(42,871)	(10,189)	(37,074)	36,618
Other operations and maintenance	89,968	84,562	254,487	240,695
Energy efficiency programs	8,410	18,504	20,971	31,011
Depreciation	31,607	30,115	92,028	89,272
Taxes other than income taxes	7,012	7,302	22,961	21,696
Total electric utility expenses	221,674	237,630	614,413	637,751
Operating Income	111,083	70,415	212,375	155,280
Other Income (Expense):
Allowance for equity funds used during construction	3,541	6,570	18,989	18,264
Other (expense) income, net	(769)	(293)	(3,615)	(2,669)
Earnings (Losses) of Unconsolidated Equity-Method Investments	2,906	3,741	6,933	1,172
Total other income	5,678	10,018	22,307	16,767
Interest Expense:
Interest on long-term debt	19,670	19,499	59,252	59,850
Other interest	1,617	1,026	4,756	3,551
Allowance for borrowed funds used during construction	(1,986)	(3,188)	(10,269)	(9,777)
Total interest expense, net	19,301	17,337	53,739	53,624
Income Before Income Taxes	97,460	63,096	180,943	118,423
Income Tax (Benefit) Expense	7,864	(41,776)	30,818	(36,997)
Net Income	$ 89,596	$ 104,872	$ 150,125	$ 155,420