Consolidated Balance Sheets Statement (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 26,527	$ 27,813
Receivables:
Customer	66,111	66,296
Other	23,608	8,197
Income taxes receivable	1,753	421
Accrued unbilled revenues	51,448	46,441
Materials and supplies (at average cost)	51,037	46,490
Fuel stock (at average cost)	42,388	47,865
Prepayments	12,823	12,405
Deferred income taxes	56,532	16,159
Current regulatory assets	30,078	34,279
Other	4,948	4,606
Total current assets	367,253	310,972
Investments	189,020	199,931
Property, Plant and Equipment:
Utility plant in service	4,915,772	4,466,873
Accumulated provision for depreciation	(1,703,159)	(1,677,609)
Utility plant in service - net	3,212,613	2,789,264
Construction work in progress	298,470	591,475
Utility plant held for future use	7,101	6,974
Other property, net of accumulated depreciation	17,847	18,877
Property, plant and equipment - net	3,536,031	3,406,590
Other Assets:
American Falls and Milner water rights	17,909	20,015
Company-owned life insurance	22,646	24,060
Regulatory assets	1,132,960	953,068
Long-term receivables	4,437	5,621
Other	49,260	40,352
Total other assets	1,227,212	1,043,116
Total	5,319,516	4,960,609
Current Liabilities:
Current maturities of long-term debt	71,064	101,064
Notes payable	69,700	54,200
Accounts payable	90,165	81,769
Income taxes accrued	1,005	505
Interest accrued	22,311	21,797
Accrued compensation	42,343	39,726
Current regulatory liabilities	30,277	29,738
Other	24,438	39,448
Total current liabilities	351,303	368,247
Other Liabilities:
Deferred income taxes	894,616	772,047
Regulatory liabilities	355,362	332,057
Pension and other postretirement benefits	423,409	363,209
Other	65,228	75,805
Total other liabilities	1,738,615	1,543,118
Long-Term Debt	1,466,632	1,387,550
Commitments and Contingencies
Equity:
Common stock	834,922	828,389
Retained earnings	940,968	840,916
Accumulated other comprehensive loss	(17,116)	(11,622)
Treasury stock	(21)	(29)
Total IDACORP, Inc. shareholders’ equity	1,758,753	1,657,654
Noncontrolling interests	4,213	4,040
Total equity	1,762,966	1,661,694
Total	5,319,516	4,960,609
Idaho Power Company
Current Assets:
Cash and cash equivalents	17,251	19,316
Receivables:
Customer	66,111	66,296
Other	20,618	8,011
Income taxes receivable	2,559	4,644
Accrued unbilled revenues	51,448	46,441
Materials and supplies (at average cost)	51,037	46,490
Fuel stock (at average cost)	42,388	47,865
Prepayments	12,688	12,274
Deferred income taxes	48,774	14,099
Current regulatory assets	30,078	34,279
Other	4,950	4,606
Total current assets	347,902	304,321
Property, Plant and Equipment:
Utility plant in service	4,915,772	4,466,873
Accumulated provision for depreciation	(1,703,159)	(1,677,609)
Utility plant in service - net	3,212,613	2,789,264
Construction work in progress	298,470	591,475
Utility plant held for future use	7,101	6,974
Property, plant and equipment - net	3,518,184	3,387,713
Investments and Other Property	128,145	128,674
Other Assets:
American Falls and Milner water rights	17,909	20,015
Company-owned life insurance	22,646	24,060
Regulatory assets	1,132,960	953,068
Other	47,965	38,988
Total other assets	1,221,480	1,036,131
Total	5,215,711	4,856,839
Current Liabilities:
Current maturities of long-term debt	71,064	101,064
Notes payable	0	0
Accounts payable	89,651	81,054
Accounts payable to related parties	252	1,512
Interest accrued	22,311	21,797
Accrued compensation	42,282	39,670
Current regulatory liabilities	30,277	29,738
Other	23,813	38,777
Total current liabilities	279,650	313,612
Other Liabilities:
Deferred income taxes	1,001,877	863,044
Regulatory liabilities	355,362	332,057
Pension and other postretirement benefits	423,409	363,209
Other	63,127	73,147
Total other liabilities	1,843,775	1,631,457
Long-Term Debt	1,466,632	1,387,550
Commitments and Contingencies
Equity:
Common stock	97,877	97,877
Premium on capital stock	712,258	704,758
Capital stock expense	(2,097)	(2,097)
Retained earnings	834,732	735,304
Accumulated other comprehensive loss	(17,116)	(11,622)
Total equity	1,625,654	1,524,220
Total capitalization	3,092,286	2,911,770
Total	$ 5,215,711	$ 4,856,839