v3.25.1
CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]    
Balance at beginning of period $ 3,330,954  
Reclassifications 169 $ 284
Total IDACORP, Inc. shareholders’ equity 3,346,340 2,915,145
Balance at end of period 3,346,340 2,915,145
Reclassification out of Accumulated Other Comprehensive Income    
Amortization of prior service cost [1] 55 55
Amortization of net loss [1] 173 328
Total reclassification, before tax - pension and postretirement benefits 228 383
Tax benefit [2] (59) (99)
Reclassifications 169 284
Accumulated Defined Benefit Pension Items    
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]    
Balance at beginning of period (13,592) (17,184)
Other Comprehensive Income (Loss) before Reclassifications, Tax 229 0
Reclassifications 169 284
Total IDACORP, Inc. shareholders’ equity (13,652) (16,900)
Balance at end of period (13,652) (16,900)
Reclassification out of Accumulated Other Comprehensive Income    
Reclassifications $ 169 $ 284
[1] Amortization of these items is included in IDACORP's condensed consolidated statements of income in other operating expenses and in Idaho Power's condensed consolidated statements of income in other expense, net.
[2] The tax benefit is included in income tax expense in the condensed consolidated statements of income of both IDACORP and Idaho Power.