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v3.24.0.1

Information by Business Segments - Schedule of Business Segments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Operating revenues | $ 1,751,554 | $ 1,710,207 | $ 1,438,936
Resource costs | 702,372 | 735,862 | 497,123
Other operating expenses | 416,368 | 416,768 | 372,052
Depreciation and amortization | 265,409 | 253,142 | 232,176
Income (loss) from operations | 257,690 | 190,242 | 228,232
Interest expense | 143,299 | 118,692 | 106,152
Income tax expense (benefit) | (33,630) | (17,191) | 12,031
Net income (loss) | 171,180 | 155,176 | 147,334
Capital expenditures | 498,637 | 452,829 | 441,209
Total Assets | 7,702,477 | 7,417,350 | 6,853,583
Operating Segments [Member] | Utility Revenue [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 1,750,996 | 1,709,519 | 1,438,365
Resource costs | 702,372 | 735,862 | 497,123
Other operating expenses | 413,608 | 405,165 | 366,125
Depreciation and amortization | 265,329 | 253,017 | 231,915
Income (loss) from operations | 259,972 | 201,282 | 233,849
Interest expense | 142,776 | 118,173 | 105,725
Income tax expense (benefit) | (32,038) | (25,031) | 8,792
Net income (loss) | 175,953 | 125,446 | 132,782
Capital expenditures | 498,637 | 451,995 | 439,939
Total Assets | 7,532,387 | 7,240,486 | 6,723,666
Operating Segments [Member] | Avista Utilities [Member] | Utility Revenue [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 1,702,857 | 1,663,815 | 1,392,999
Resource costs | 698,546 | 732,298 | 493,289
Other operating expenses | 398,523 | 390,597 | 352,241
Depreciation and amortization | 254,401 | 242,198 | 221,552
Income (loss) from operations | 242,678 | 185,582 | 217,663
Interest expense | 136,924 | 112,213 | 99,629
Income tax expense (benefit) | (35,353) | (27,368) | 6,029
Net income (loss) | 167,016 | 117,901 | 125,558
Capital expenditures | 484,716 | 443,373 | 435,887
Total Assets | 7,262,704 | 6,976,164 | 6,458,244
Operating Segments [Member] | Alaska Electric Light & Power [Member] | Utility Revenue [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 48,139 | 45,704 | 45,366
Resource costs | 3,826 | 3,564 | 3,834
Other operating expenses | 15,085 | 14,568 | 13,884
Depreciation and amortization | 10,928 | 10,819 | 10,363
Income (loss) from operations | 17,294 | 15,700 | 16,186
Interest expense | 5,852 | 5,960 | 6,096
Income tax expense (benefit) | 3,315 | 2,337 | 2,763
Net income (loss) | 8,937 | 7,545 | 7,224
Capital expenditures | 13,921 | 8,622 | 4,052
Total Assets | 269,683 | 264,322 | 265,422
Other [Member] | Non-Utility Revenue [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 558 | 688 | 571
Resource costs | 0 | 0 | 0
Other operating expenses | 2,760 | 11,603 | 5,927
Depreciation and amortization | 80 | 125 | 261
Income (loss) from operations | (2,282) | (11,040) | (5,617)
Interest expense | 1,881 | 791 | 522
Income tax expense (benefit) | (1,592) | 7,840 | 3,239
Net income (loss) | (4,773) | 29,730 | 14,552
Capital expenditures | 0 | 834 | 1,270
Total Assets | 191,665 | 187,027 | 132,158
Intersegment Eliminations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 0 | 0 | 0
Resource costs | 0 | 0 | 0
Other operating expenses | 0 | 0 | 0
Depreciation and amortization | 0 | 0 | 0
Income (loss) from operations | 0 | 0 | 0
Interest expense | (1,358) | (272) | (95)
Income tax expense (benefit) | 0 | 0 | 0
Net income (loss) | 0 | 0 | 0
Capital expenditures | 0 | 0 | 0
Total Assets | $ (21,575) | $ (10,163) | $ (2,241)

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