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v3.22.0.1

Information by Business Segments - Schedule of Business Segments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |
Operating revenues | $ 1,438,936 | $ 1,321,891 | $ 1,345,622
Resource costs | 497,123 | 398,509 | 439,817
Other operating expenses | 372,052 | 359,958 | 383,770
Depreciation and amortization | 232,176 | 224,223 | 205,994
Income (loss) from operations | 228,232 | 232,700 | 210,389
Interest expense | 106,152 | 105,061 | 104,354
Income taxes | 12,031 | 7,051 | 31,374
Net income (loss) from continuing operations attributable to Avista Corp. shareholders | 147,334 | 129,488 | 196,979
Capital expenditures | 441,209 | 405,674 | 443,345
Total Assets | 6,853,583 | 6,402,097 | 6,082,456
Avista Utilities [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 1,392,999 | 1,277,468 | 1,295,873
Alaska Electric Light & Power [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 45,366 | 42,809 | 37,265
Operating Segments [Member] | Utility Revenue [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 1,438,365 | 1,320,277 | 1,333,138
Resource costs | 497,123 | 398,509 | 439,817
Other operating expenses | 366,125 | 354,614 | 364,887
Depreciation and amortization | 231,915 | 223,507 | 205,365
Income (loss) from operations | 233,849 | 237,146 | 217,417
Interest expense | 105,725 | 104,723 | 104,251
Income taxes | 8,792 | 7,932 | 31,179
Net income (loss) from continuing operations attributable to Avista Corp. shareholders | 132,782 | 132,905 | 191,435
Capital expenditures | 439,939 | 404,306 | 442,510
Total Assets | 6,723,666 | 6,304,311 | 5,984,661
Operating Segments [Member] | Avista Utilities [Member] | Utility Revenue [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 1,392,999 | 1,277,468 | 1,295,873
Resource costs | 493,289 | 396,543 | 442,471
Other operating expenses | 352,241 | 341,709 | 352,170
Depreciation and amortization | 221,552 | 213,701 | 195,697
Income (loss) from operations | 217,663 | 220,058 | 200,994
Interest expense | 99,629 | 98,451 | 97,866
Income taxes | 6,029 | 4,921 | 28,363
Net income (loss) from continuing operations attributable to Avista Corp. shareholders | 125,558 | 124,810 | 183,977
Capital expenditures | 435,887 | 397,292 | 434,077
Total Assets | 6,458,244 | 6,035,340 | 5,713,268
Operating Segments [Member] | Alaska Electric Light & Power [Member] | Utility Revenue [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 45,366 | 42,809 | 37,265
Resource costs | 3,834 | (1,966) | 2,654
Other operating expenses | 13,884 | 12,905 | 12,717
Depreciation and amortization | 10,363 | 9,806 | 9,668
Income (loss) from operations | 16,186 | 17,088 | 16,423
Interest expense | 6,096 | 6,272 | 6,385
Income taxes | 2,763 | 3,011 | 2,816
Net income (loss) from continuing operations attributable to Avista Corp. shareholders | 7,224 | 8,095 | 7,458
Capital expenditures | 4,052 | 7,014 | 8,433
Total Assets | 265,422 | 268,971 | 271,393
Other [Member] | Non-Utility Revenue [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 571 | 1,614 | 12,484
Resource costs | 0 | 0 | 0
Other operating expenses | 5,927 | 5,344 | 18,883
Depreciation and amortization | 261 | 716 | 629
Income (loss) from operations | (5,617) | (4,446) | (7,028)
Interest expense | 522 | 524 | 1,032
Income taxes | 3,239 | 881 | (195)
Net income (loss) from continuing operations attributable to Avista Corp. shareholders | 14,552 | (3,417) | (5,544)
Capital expenditures | 1,270 | 1,368 | 835
Total Assets | 132,158 | 109,658 | 113,390
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 | (95) | (186) | (929)
Income taxes | 0 | 0 | 0
Net income (loss) from continuing operations attributable to Avista Corp. shareholders | 0 | 0 | 0
Capital expenditures | 0 | 0 | 0
Total Assets | $ (2,241) | $ (11,872) | $ (15,595)

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