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LEASES (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Operating Lease, Description [Abstract] |  |  |
Option to extend lease term | 66 years |  |
Percentage of increase in annual lease payments | 3.00% |  |
Rent Expense [Abstract] |  |  |
Minimum rentals | $ 44,000 | $ 40,000 |
Contingent rentals | 0 | 0 |
Rent expenses | 44,000 | 40,000 |
Cash paid for amounts included in the measurement of lease liabilities [Abstract] |  |  |
Operating cash flows from operating leases | 44,000 | 40,000 |
Right-of-use assets obtained in exchange for lease obligations [Abstract] |  |  |
Operating leases | 460,000 | 480,000 |
Operating leases [Abstract] |  |  |
Operating lease right-of-use assets | 460,000 | 480,000 |
Operating lease, liability [Abstract] |  |  |
Other current liabilities | $ 20,000 | $ 19,000 |
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:OtherLiabilitiesCurrent | us-gaap:OtherLiabilitiesCurrent |
Operating lease liabilities | $ 432,000 | $ 450,000 |
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | us-gaap:OperatingLeaseLiabilityNoncurrent | us-gaap:OperatingLeaseLiabilityNoncurrent |
Total operating lease liabilities | $ 452,000 | $ 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 | 59 years | 58 years |
Weighted Average Discount Rate [Abstract] |  |  |
Operating leases | 5.00% | 5.00% |
Maturities of Operating Lease Liabilities [Abstract] |  |  |
2021 | $ 42,000 |  |
2022 | 28,000 |  |
2023 | 23,000 |  |
2024 | 23,000 |  |
2025 | 24,000 |  |
Thereafter | 1,306,000 |  |
Total undiscounted lease payments | 1,446,000 |  |
Less effects of discounting | (994,000) |  |
Total lease liabilities recognized | $ 452,000 | $ 469,000 |
Artesian Water [Member] | Land Improvements [Member] |  |  |
Operating Lease, Description [Abstract] |  |  |
Operating lease period | 33 years |  |
Portion of lease term determining annual lease payment | 11 years |  |
Rental payments | $ 16,500 | 16,300 | $ 16,500
Artesian Water [Member] | Office Equipment [Member] |  |  |
Operating Lease, Description [Abstract] |  |  |
Operating lease period | 3 years |  |
Rental payments | $ 19,000 | $ 19,000 |
Minimum [Member] |  |  |
Operating Lease, Description [Abstract] |  |  |
Remaining lease term | 1 year |  |
Maximum [Member] |  |  |
Operating Lease, Description [Abstract] |  |  |
Remaining lease term | 76 years |  |

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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
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- Definition The increases or decreases in lease payments that result from changes occurring after the inception of the lease in the factors (other than the passage of time) on which lease payments are based, except that any escalation of minimum lease payments relating to increases in construction or acquisition cost of the leased property or for increases in some measure of cost or value during the construction or preconstruction period, are excluded from contingent rentals. Contingent rentals also may include amounts for which the triggering events have not yet occurred or the specified targets for which have not yet been achieved (such as sales based percentage rent), but which events are considered probable of occurring or which specified targets are considered probable of being achieved. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121549808&loc=d3e36991-112694 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=121580752&loc=d3e38371-112697 Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121573735&loc=d3e41499-112717 Reference 4: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 40 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556591&loc=d3e36728-112689 Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 25 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=121614528&loc=d3e35050-112683 + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121573735&loc=d3e41499-112717 + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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