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v3.25.3

Revenues - Narrative (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 USD ($) contract | Sep. 30, 2025 USD ($) contract
ASUS |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized | $ 3.9 | $ 4.3
Revenue, remaining performance obligation, amount | $ 4,200.0 | $ 4,200.0
ASUS | Minimum |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, remaining performance obligation, expected timing of satisfaction, period | 14 years | 14 years
ASUS | Maximum |  |
Disaggregation of Revenue [Line Items] |  |
Period of fixed price contracts to operate and maintain water systems at various military bases |  | 50 years
Revenue, remaining performance obligation, expected timing of satisfaction, period | 49 years | 49 years
Bay State Utility Service LLC (" BSUS") |  |
Disaggregation of Revenue [Line Items] |  |
Number of contracts with 15 year contract | contract | 1 | 1
Golden State Water Company and Bear Valley Electric Service Inc. | Sales | Customer Concentration Risk |  |
Disaggregation of Revenue [Line Items] |  |
Concentration risk, percentage |  | 90.00%
Contracted services: | Bay State Utility Service LLC (" BSUS") |  |
Disaggregation of Revenue [Line Items] |  |
Period of fixed price contracts to operate and maintain water systems at various military bases |  | 15 years

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