v3.26.1
Schedule H, Line 4i: Schedule of Assets Held at End of Year - Schedule H, Line 4i: Schedule of Assets Held at End of Year (Details) - Artesian 401(k) Retirement Plan [Member]
12 Months Ended
Dec. 31, 2025
USD ($)
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Participants notes receivable $ 209,625 [1]
Asset held for investment $ 80,320,139
Mutual Funds [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 48,648,003
Pooled Separate Accounts [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 26,665,290
Participants Notes Receivable [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Party in interest true [1]
Investment, Identifier [Axis]: Allspring Special Mid Cap Value Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Allspring Special Mid Cap Value Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 2,241,933
Investment, Identifier [Axis]: American Century Small Cap Value Fund R6 [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Century Small Cap Value Fund R6 [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 157,981
Investment, Identifier [Axis]: American Funds 2010 Target Date Retirement Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds 2010 Target Date Retirement Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 249,301
Investment, Identifier [Axis]: American Funds 2020 Target Date Retirement Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds 2020 Target Date Retirement Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 37,704
Investment, Identifier [Axis]: American Funds 2025 Target Date Retirement Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds 2025 Target Date Retirement Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 1,502,529
Investment, Identifier [Axis]: American Funds 2030 Target Date Retirement Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds 2030 Target Date Retirement Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 559,897
Investment, Identifier [Axis]: American Funds 2035 Target Date Retirement Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds 2035 Target Date Retirement Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 2,129,434
Investment, Identifier [Axis]: American Funds 2040 Target Date Retirement Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds 2040 Target Date Retirement Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 729,982
Investment, Identifier [Axis]: American Funds 2045 Target Date Retirement Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds 2045 Target Date Retirement Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 5,637,000
Investment, Identifier [Axis]: American Funds 2050 Target Date Retirement Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds 2050 Target Date Retirement Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 929,511
Investment, Identifier [Axis]: American Funds 2055 Target Date Retirement Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds 2055 Target Date Retirement Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 3,408,491
Investment, Identifier [Axis]: American Funds 2060 Target Date Retirement Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds 2060 Target Date Retirement Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 288,107
Investment, Identifier [Axis]: American Funds 2065 Target Date Retirement Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds 2065 Target Date Retirement Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 252,568
Investment, Identifier [Axis]: American Funds American Balanced Fund R6 [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party American Funds American Balanced Fund R6 [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 4,042,342
Investment, Identifier [Axis]: Artesian Resources Corporation [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Artesian Resources Corporation [Member] [1]
Description of investment Class A Non-Voting Common Stock [Member] [1]
Participant directed status Participant-Directed Investments [Member] [1],[2]
Current value $ 2,666,229 [1]
Investment, Identifier [Axis]: Capital Group Europacific Growth SA [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Capital Group Europacific Growth SA [Member]
Description of investment Pooled Separate Accounts [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 3,551,683
Investment, Identifier [Axis]: Columbia Small Cap Growth Fund 1 [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Columbia Small Cap Growth Fund 1 [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 1,039,102
Investment, Identifier [Axis]: Common Stock [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Party in interest true [1]
Investment, Identifier [Axis]: Dreyfus Government Cash Management Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Dreyfus Government Cash Management Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 972
Investment, Identifier [Axis]: Driehaus Emerging Markets Growth Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Driehaus Emerging Markets Growth Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 189,055
Investment, Identifier [Axis]: JP Morgan Large Cap Growth SA [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party JP Morgan Large Cap Growth SA [Member]
Description of investment Pooled Separate Accounts [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 15,490,964
Investment, Identifier [Axis]: JP Morgan Large Cap Value 1 Fund SA [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party JP Morgan Large Cap Value 1 Fund SA [Member]
Description of investment Pooled Separate Accounts [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 7,622,643
Investment, Identifier [Axis]: JP Morgan Mid Cap Growth Fund [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party JP Morgan Mid Cap Growth Fund [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 1,959,329
Investment, Identifier [Axis]: Pioneer Bond Fund K [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Pioneer Bond Fund K [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 3,121,448
Investment, Identifier [Axis]: T Rowe Price Stable Value [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party T Rowe Price Stable Value [Member]
Description of investment Common/Collective Trust [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 2,130,992
Investment, Identifier [Axis]: Vanguard 500 Index Fund Admiral [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Vanguard 500 Index Fund Admiral [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 13,516,797
Investment, Identifier [Axis]: Vanguard Mid-Cap Index Fund Admiral [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Vanguard Mid-Cap Index Fund Admiral [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 954,928
Investment, Identifier [Axis]: Vanguard Short-Term Investment-Grade Bond Fund Admiral [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Vanguard Short-Term Investment-Grade Bond Fund Admiral [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 1,298,656
Investment, Identifier [Axis]: Vanguard Small-Cap Index Fund Admiral [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Vanguard Small-Cap Index Fund Admiral [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 1,535,914
Investment, Identifier [Axis]: Vanguard Total Bond Market Index Admiral [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Vanguard Total Bond Market Index Admiral [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 1,365,514
Investment, Identifier [Axis]: Vanguard Total International Stock Index Admiral [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Identity of issuer, borrower, lessor, or similar party Vanguard Total International Stock Index Admiral [Member]
Description of investment Mutual Funds [Member]
Participant directed status Participant-Directed Investments [Member] [2]
Current value $ 1,499,508
Minimum [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Participants notes receivable, interest rates 4.25% [1]
Maximum [Member]  
Schedule H, Line 4i: Schedule of Assets Held at End of Year [Abstract]  
Participants notes receivable, interest rates 9.50% [1]
[1] Identifies the party as a "Party in Interest" as defined by ERISA.
[2] Cost information is not required for participant directed investments and is therefore not included.