LEASES (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Lease, Description [Abstract]
Option to extend lease term	66 years	66 years
Percentage of increase in annual lease payments		3.00%
Rent Expense [Abstract]
Minimum rentals	$ 23,000	$ 40,000
Contingent rentals	0	0
Rent expenses	23,000	40,000
Cash paid for amounts included in the measurement of lease liabilities [Abstract]
Operating cash flows from operating leases		40,000
Right-of-use assets obtained in exchange for lease obligations [Abstract]
Operating leases		480,000
Operating leases [Abstract]
Operating lease right-of-use assets	480,000	480,000	$ 0
Other current liabilities	$ 19,000	$ 19,000
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesCurrent	us-gaap:OtherLiabilitiesCurrent
Operating lease liabilities	$ 450,000	$ 450,000	0
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OperatingLeaseLiabilityNoncurrent	us-gaap:OperatingLeaseLiabilityNoncurrent
Total operating lease liabilities	$ 469,000	$ 469,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OperatingLeaseLiability	us-gaap:OperatingLeaseLiability
Weighted Average Remaining Lease Term [Abstract]
Operating leases	58 years	58 years
Weighted Average Discount Rate [Abstract]
Operating leases	5.00%	5.00%
Maturities of Operating Lease Liabilities [Abstract]
2020	$ 42,000	$ 42,000
2021	42,000	42,000
2022	28,000	28,000
2023	23,000	23,000
2024	23,000	23,000
Thereafter	1,320,000	1,320,000
Total undiscounted lease payments	1,478,000	1,478,000
Less effects of discounting	(1,009,000)	(1,009,000)
Total lease liabilities recognized	$ 469,000	$ 469,000
Artesian Water [Member] | Land Improvements [Member]
Operating Lease, Description [Abstract]
Operating lease period	33 years	33 years
Portion of lease term determining annual lease payment		11 years
Rental payments		$ 16,300	$ 16,500	$ 16,300
Artesian Water [Member] | Office Equipment [Member]
Operating Lease, Description [Abstract]
Operating lease period	3 years	3 years
Rental payments		$ 27,000
Minimum [Member]
Operating Lease, Description [Abstract]
Remaining lease term		3 years
Maximum [Member]
Operating Lease, Description [Abstract]
Remaining lease term		78 years