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Benefit Plans - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |
Employer plan contributions | $ 3,567 | $ 7,627
Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Estimated employer contributions for the remainder of fiscal year | $ 8,653 | $ 8,653
CTWS Employees |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Rate of compensation increase |  | 1.50%

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