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Lines of Credit and Long-Term Liabilities (Details) - USD ($) $ in Thousands	Apr. 15, 2025	Mar. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Weighted-average interest rate on short-term		5.47%	6.08%
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Unused portion of line of credit		$ 197,410
Line of Credit | Revolving Credit Facility | CTWS Credit Agreement Maturing August 2025 | Subsequent Event
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 40,000

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