v3.26.1
INCOME TAXES: Level 4 (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Income Tax Expense [Line Items]    
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount $ 17,118 $ 11,809
Excess deferred income tax reversal (1,624) (2,431)
Other [1] (8,833) (2,594)
Income tax expense before additional ADITC amortization 6,661 6,784
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount (6,250) (19,250)
Income Tax Expense $ 411 $ (12,466)
Effective tax rate 0.60% (26.40%)
Idaho Power Company    
Income Tax Expense [Line Items]    
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount $ 16,922 $ 11,381
Excess deferred income tax reversal (1,624) (2,431)
Other [1] (8,095) (2,358)
Income tax expense before additional ADITC amortization 7,203 6,592
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount (6,250) (19,250)
Income Tax Expense $ 953 $ (12,658)
Effective tax rate 1.40% (27.80%)
[1] "Other" primarily consists of the net tax effect of Idaho Power's regulatory flow-through tax adjustments.
Supplemental Disclosure of Cash Flow Information

Supplemental cash flow information related to cash (refunded) paid for income taxes is presented below (in thousands of dollars):
Three months ended
March 31,
 20262025
IDACORP
Cash (refunded) paid for income taxes$(6,214)$— 
Idaho Power
Cash paid to IDACORP related to income taxes$— $—