Commitments and Contingent Liabilities (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) gal l	Sep. 30, 2023 USD ($)
Commitments and Contingent Liabilities [Line Items]
Average purchase of gallons | l			47
Estimated incremental borrowing rate	4.03%		4.03%
Rental expenses under operating leases | $	$ 0.2	$ 0.2	$ 0.6	$ 0.6
Estimated obligation expenditure | $			$ 14.5
Settlement term sheet, mutual agreement date			Aug. 30, 2024
Purchase Commitment [Member]
Commitments and Contingent Liabilities [Line Items]
Purchase commitment expiration date of contract			Nov. 30, 2048
Water Supply [Member]
Commitments and Contingent Liabilities [Line Items]
Average purchase of gallons | gal			27,000,000
NJBPU Regulated water [Member]
Commitments and Contingent Liabilities [Line Items]
Purchase commitment expiration date of contract			Feb. 27, 2026
Average purchase of gallons | l			3
Treated Water [Member]
Commitments and Contingent Liabilities [Line Items]
Average purchase of gallons | gal			60,000,000