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REGULATORY PROCEEDINGS (Details) $ in Millions			3 Months Ended		9 Months Ended
	Jun. 03, 2025 USD ($)	Jun. 12, 2024 USD ($)	Sep. 30, 2025 USD ($) Application	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) Application	Sep. 30, 2024 USD ($)	Apr. 04, 2025 USD ($)	Dec. 18, 2024	Jul. 01, 2024	Nov. 28, 2023 USD ($)	Apr. 28, 2023 USD ($)
REGULATORY PROCEEDINGS [Abstract]
Annual revenue performance obligation (in Dollars)		$ 11.2					$ 10.8			$ 10.8	$ 16.7
Percentage of revenue increase requested for new rates	2.88%	15.20%					12.41%			14.60%	22.70%
Percentage of distribution system infrastructure charge							1.66%			7.50%
Percentage of return on common equity		9.50%
Overall rate of return on rate base		6.75%
Incremental increase in rate							10.75%
Additional revenue from temporary incremental increase in rates (in Dollars)	$ 2.5
Percentage of temporary incremental increase in rate	1.22%
Number of applications (in Application) | Application			2		2
Cumulative DSIC Rate								1.66%	0.34%
Artesian Water [Member]
REGULATORY PROCEEDINGS [Abstract]
Revenue earned in DSIC rate increases (in Dollars)			$ 0.0	$ 0.1	$ 0.5	$ 0.1
Delaware [Member]
REGULATORY PROCEEDINGS [Abstract]
Percentage of gross water sales					15.00%
Period to complete rate case by law					7 months
Maximum [Member]
REGULATORY PROCEEDINGS [Abstract]
Percentage of gross water sales in temporary rate increase placed into effect until new rates approved	0.00%
Maximum [Member] | Delaware [Member]
REGULATORY PROCEEDINGS [Abstract]
Temporary annual rate increase subject to 15% gross water sales limitation (in Dollars)					$ 2.5
Percentage of rate relief allowed should a rate case not complete					15.00%
Distribution System Improvement Charge rate increase applied between base rate filings					7.50%
Distribution System Improvement Charge rate increase within a 12-month period					5.00%

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- Definition

Amount of additional revenue from temporary incremental increase in rates.

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- Definition

For a first temporary increase in revenue basis, maximum temporary annual rate charge increase subject to specific gross water sales limitation.

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- Definition

Ceiling percentage of Distribution System Improvement Charge rate subject to amount billed to customers.

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- Definition

Conditional percentage maximum for increasing Distribution System Improvement Charge rate within a 12-month period.

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- Definition

The amount of increase in rate a customer would experience after the DSIC rate is subtracted from the new actual rate.

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No definition available.

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- Definition

The number of applications for Distribution System Improvement Charge rate increase application filed by company to regulatory.

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- Definition

For a filing request with a regulatory agency to implement new rates, the percentage of rate of return on base rate upon rate approval.

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- Definition

Percentage of Distribution System Improvement Charge rate increase application filed by company to regulatory.

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No definition available.

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- Definition

Artesian Water has been permitted to recover specific percentage of investments made in infrastructure.

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- Definition

Percentage of annual gross water sales in temporary rate increase placed into effect until new rates approved.

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- Definition

For a first temporary annual rate increase in revenue basis, maximum percentage of gross water sales increase allowed subject to specific dollar amount limitation.

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- Definition

Percentage of relief that utility may put into effect if condition for rate case period completion not fulfilled by law.

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- Definition

For a filing request with a regulatory agency to implement new rates, the percentage of return on common equity upon rate approval.

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For a filing request with a regulatory agency to implement new rates, the percentage increase in annual revenue expected upon rate approval.

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No definition available.

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Percentage of temporary incremental increase in rate that can be charged.

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Period within which rate change case is to complete, by law, after which, entire requested rate relief may go into effect.

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Line items represent regulatory proceedings.

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Revenue earned due to Distribution System Improvement Charge rate increase.

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- Definition

Amount of transaction price allocated to performance obligation that has been recognized as revenue.

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