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Business Segments - Schedule of Business Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Details of reportable segment |  |  |  |  |
Operating revenues | $ 155,328 | $ 157,400 | $ 290,579 | $ 318,823 |
Operating income (loss) | 51,748 | 58,945 | 90,722 | 110,110 |
Interest expense (income), net | 11,044 | 8,925 | 21,829 | 16,542 |
Net property, plant and equipment | 1,981,636 | 1,814,061 | 1,981,636 | 1,814,061 | $ 1,892,280
Depreciation and amortization | 10,770 | 10,258 | 21,492 | 21,461 |
Income tax expense | 10,359 | 13,204 | 17,755 | 23,956 |
Segment, Expenditure, Addition to Long-Lived Assets | 61,748 | 39,312 | 109,298 | 88,649 |
AWR | Intersegment Eliminations |  |  |  |  |
Details of reportable segment |  |  |  |  |
Operating revenues | 0 | 0 | 0 | 0 |
Operating income (loss) | (2) | (36) | (3) | (37) |
Interest expense (income), net | 1,590 | 1,429 | 3,312 | 2,752 |
Net property, plant and equipment | 0 | 0 | 0 | 0 |
Depreciation and amortization | 0 | 0 | 0 | 0 |
Income tax expense | (411) | (483) | (959) | (1,027) |
Segment, Expenditure, Addition to Long-Lived Assets | 0 | 0 | 0 | 0 |
GOLDEN STATE WATER COMPANY |  |  |  |  |
Details of reportable segment |  |  |  |  |
Operating revenues | 110,424 | 116,908 | 200,689 | 229,620 |
Operating income (loss) | 40,565 | 50,524 | 69,732 | 90,763 |
Net property, plant and equipment | 1,813,292 |  | 1,813,292 |  | $ 1,735,534
Depreciation and amortization | 9,043 | 8,674 | 18,077 | 18,280 |
Income tax expense | 8,487 | 11,934 | 14,311 | 20,844 |
GOLDEN STATE WATER COMPANY | Water: |  |  |  |  |
Details of reportable segment |  |  |  |  |
Operating revenues | 110,424 | 116,908 | 200,689 | 229,620 |
Public Utilities Property Plant and Equipment Depreciation on Transportation Equipment |  |  |  | 200 |
GOLDEN STATE WATER COMPANY | Reportable Legal Entities | Water: |  |  |  |  |
Details of reportable segment |  |  |  |  |
Operating revenues | 110,424 | 116,908 | 200,689 | 229,620 |
Operating income (loss) | 40,565 | 50,524 | 69,732 | 90,763 |
Interest expense (income), net | 8,142 | 6,515 | 16,023 | 12,009 |
Net property, plant and equipment | 1,813,292 | 1,666,700 | 1,813,292 | 1,666,700 |
Depreciation and amortization | 9,043 | 8,674 | 18,077 | 18,280 |
Income tax expense | 8,487 | 11,934 | 14,311 | 20,844 |
Segment, Expenditure, Addition to Long-Lived Assets | 54,349 | 34,567 | 95,627 | 76,572 |
BVES | Electric: |  |  |  |  |
Details of reportable segment |  |  |  |  |
Operating revenues | 8,703 | 8,828 | 20,908 | 21,732 |
BVES | Reportable Legal Entities | Electric: |  |  |  |  |
Details of reportable segment |  |  |  |  |
Operating revenues | 8,703 | 8,828 | 20,908 | 21,732 |
Operating income (loss) | 1,233 | 2,103 | 4,374 | 5,734 |
Interest expense (income), net | 951 | 654 | 1,816 | 1,227 |
Net property, plant and equipment | 150,999 | 130,502 | 150,999 | 130,502 |
Depreciation and amortization | 893 | 759 | 1,777 | 1,507 |
Income tax expense | (39) | 247 | 521 | 948 |
Segment, Expenditure, Addition to Long-Lived Assets | 5,945 | 4,386 | 11,161 | 11,038 |
ASUS | Reportable Legal Entities | Contracted services: |  |  |  |  |
Details of reportable segment |  |  |  |  |
Operating revenues | 36,201 | 31,664 | 68,982 | 67,471 |
Operating income (loss) | 9,952 | 6,354 | 16,619 | 13,650 |
Interest expense (income), net | 361 | 327 | 678 | 554 |
Net property, plant and equipment | 17,345 | 16,859 | 17,345 | 16,859 |
Depreciation and amortization | 834 | 825 | 1,638 | 1,674 |
Income tax expense | 2,322 | 1,506 | 3,882 | 3,191 |
Segment, Expenditure, Addition to Long-Lived Assets | 1,454 | 359 | 2,510 | 1,039 |
Golden State Water Company and Bear Valley Electric Service Inc. |  |  |  |  |
Details of reportable segment |  |  |  |  |
Public Utilities Property Plant and Equipment Depreciation on Transportation Equipment | $ 200 | $ 200 | $ 300 | $ 500 |

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