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v3.25.3

Employee Benefit Plans - Narrative (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Increase (decrease) in regulatory assets and liabilities |  |  |  | $ (30,312) | $ (8,622)
GSWC |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Increase (decrease) in regulatory assets and liabilities |  |  |  | (30,785) | (8,683)
Pension Benefits |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Plan assets, contributions by employer | $ 3,400 |  |  |  |
Pension Benefits | GSWC |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Regulatory adjustment — deferred | $ 1,700 | $ 1,700 |  | 1,700 |
Pension Benefits | Water: | GSWC |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Increase (decrease) in regulatory assets and liabilities |  | $ (400) | $ (100) | $ (1,200) | $ (400)

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