Condensed Consolidated Balance Sheets Statement (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 186,870	$ 26,527
Receivables:
Customer	111,214	66,111
Other	12,394	23,608
Income taxes receivable	0	1,753
Accrued unbilled revenues	52,445	51,448
Materials and supplies (at average cost)	52,857	51,037
Fuel stock (at average cost)	35,412	42,388
Prepayments	14,041	12,823
Deferred income taxes	35,056	56,532
Current regulatory assets	63,445	30,078
Other	3,116	4,948
Total current assets	566,850	367,253
Investments	174,749	189,020
Property, Plant and Equipment:
Utility plant in service	5,035,762	4,915,772
Accumulated provision for depreciation	(1,759,785)	(1,703,159)
Utility plant in service - net	3,275,977	3,212,613
Construction work in progress	321,128	298,470
Utility plant held for future use	7,093	7,101
Other property, net of accumulated depreciation	17,342	17,847
Property, plant and equipment - net	3,621,540	3,536,031
Other Assets:
American Falls and Milner water rights	16,064	17,909
Company-owned life insurance	22,055	22,646
Regulatory assets	1,139,353	1,132,960
Long-term receivables	4,437	4,437
Other	46,070	49,260
Total other assets	1,227,979	1,227,212
Total	5,591,118	5,319,516
Current Liabilities:
Current maturities of long-term debt	71,064	71,064
Notes payable	53,000	69,700
Accounts payable	88,835	90,165
Income taxes accrued	13,802	1,005
Interest accrued	26,409	22,311
Accrued compensation	35,883	42,343
Current regulatory liabilities	8,474	30,277
Other	37,797	24,438
Total current liabilities	335,264	351,303
Other Liabilities:
Deferred income taxes	938,162	894,616
Regulatory liabilities	369,729	355,362
Pension and other postretirement benefits	416,272	423,409
Other	52,717	65,228
Total other liabilities	1,776,880	1,738,615
Long-Term Debt	1,615,197	1,466,632
Commitments and Contingencies
Equity:
Common stock	838,575	834,922
Retained earnings	1,034,472	940,968
Accumulated other comprehensive loss	(13,439)	(17,116)
Treasury stock	(13)	(21)
Total IDACORP, Inc. shareholders’ equity	1,859,595	1,758,753
Noncontrolling interests	4,182	4,213
Total equity	1,863,777	1,762,966
Total	5,591,118	5,319,516
Idaho Power Company
Current Assets:
Cash and cash equivalents	178,772	17,251
Receivables:
Customer	111,214	66,111
Other	12,263	20,618
Income taxes receivable	0	2,559
Accrued unbilled revenues	52,445	51,448
Materials and supplies (at average cost)	52,857	51,037
Fuel stock (at average cost)	35,412	42,388
Prepayments	13,910	12,688
Deferred income taxes	30,699	48,774
Current regulatory assets	63,445	30,078
Other	3,116	4,950
Total current assets	554,133	347,902
Investments	123,075	128,145
Property, Plant and Equipment:
Utility plant in service	5,035,762	4,915,772
Accumulated provision for depreciation	(1,759,785)	(1,703,159)
Utility plant in service - net	3,275,977	3,212,613
Construction work in progress	321,128	298,470
Utility plant held for future use	7,093	7,101
Property, plant and equipment - net	3,604,198	3,518,184
Other Assets:
American Falls and Milner water rights	16,064	17,909
Company-owned life insurance	22,055	22,646
Regulatory assets	1,139,353	1,132,960
Other	44,940	47,965
Total other assets	1,222,412	1,221,480
Total	5,503,818	5,215,711
Current Liabilities:
Current maturities of long-term debt	71,064	71,064
Accounts payable	87,916	89,651
Accounts payable to affiliates	1,261	252
Income taxes accrued	9,768	0
Interest accrued	26,409	22,311
Accrued compensation	35,713	42,282
Current regulatory liabilities	8,474	30,277
Other	37,235	23,813
Total current liabilities	277,840	279,650
Other Liabilities:
Deferred income taxes	1,052,512	1,001,877
Regulatory liabilities	369,729	355,362
Pension and other postretirement benefits	416,272	423,409
Other	50,920	63,127
Total other liabilities	1,889,433	1,843,775
Long-Term Debt	1,615,197	1,466,632
Commitments and Contingencies
Equity:
Common stock	97,877	97,877
Premium on capital stock	712,258	712,258
Capital stock expense	(2,097)	(2,097)
Retained earnings	926,749	834,732
Accumulated other comprehensive loss	(13,439)	(17,116)
Total equity	1,721,348	1,625,654
Total capitalization	3,336,545	3,092,286
Total	$ 5,503,818	$ 5,215,711