XML 44 R28.htm IDEA: XBRL DOCUMENT
v3.25.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) | 12 Months Ended
--- | ---
Dec. 31, 2024
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] |
Basis of Presentation | Basis of Presentation The audited consolidated financial statements are presented in accordance with the requirements of Form 10-K and accounting principles generally accepted in the United States and consequently include all the disclosures required in the consolidated financial statements included in the Company’s Annual Report on Form 10-K. The accompanying consolidated financial statements include the accounts of Artesian Resources Corporation and its subsidiaries and all intercompany balances and transactions between subsidiaries have been eliminated.
Reclassification | Reclassification Certain accounts in the prior year financial statements have been reclassified for comparative purposes to conform with the presentation in the current year financial statements. These reclassifications had no effect on net income or stockholders’ equity.
Regulated Utility Accounting | Regulated Utility Accounting The accounting records of Artesian Water Company, Inc., or Artesian Water, Artesian Wastewater Management, Inc., or Artesian Wastewater, and, effective January 14, 2022, Tidewater Environmental Services, Inc. dba Artesian Wastewater, or TESI, are maintained in accordance with the uniform system of accounts as prescribed by the Delaware Public Service Commission, or the DEPSC. The accounting records of Artesian Water Pennsylvania, Inc., or Artesian Water Pennsylvania, are maintained in accordance with the uniform system of accounts as prescribed by the Pennsylvania Public Utility Commission, or the PAPUC. The accounting records of Artesian Water Maryland, Inc., or Artesian Water Maryland, and Artesian Wastewater Maryland, Inc., or Artesian Wastewater Maryland, are maintained in accordance with the uniform system of accounts as prescribed by the Maryland Public Service Commission, or the MDPSC. All these subsidiaries follow the provisions of Financial Accounting Standards Board, or FASB, ASC Topic 980, which provides guidance for companies in regulated industries. These regulated subsidiaries account for the majority of our operating revenue. See Note 17 (Business Segment Information) to our Consolidated Financial Statements for a full description of our segment information.
Use of Estimates in the Preparation of Consolidated Financial Statements | Use of Estimates in the Preparation of Consolidated Financial Statements The consolidated financial statements were prepared in conformity with generally accepted accounting principles in the U.S., which require management to make certain estimates and assumptions that could impact the Company’s financial condition, results of operations and cash flows. Actual results could differ from management's estimates. Management makes certain estimates and assumptions regarding unbilled revenues, accounting for income taxes, credit losses and reserves for bad debt, lease agreements, goodwill and contingent assets and liabilities. All additions to utility plant are recorded at cost. Business combinations pursuant to ASC Topic 805 may result in a purchase price allocation and the acquired assets are required to be evaluated by the applicable regulatory agency. Artesian Wastewater acquired TESI in January 2022 and Artesian Water purchased substantially all of the water operating assets from the Town of Clayton in May 2022. On December 31, 2022, the fair value determinations for TESI and the water operating assets acquired from the Town of Clayton were finalized.
Utility Plant | Utility Plant Utility plant is stated at original cost. Cost includes direct labor, materials, AFUDC (see description below) and indirect charges for such capitalized items as transportation, supervision, pension, medical, and other fringe benefits related to employees engaged in construction activities. When depreciable units of utility plant are retired, the historical costs of plant retired is charged to accumulated depreciation. Any cost associated with retirement, less any salvage value or proceeds received, is charged to the regulated retirement liability. Maintenance, repairs, and replacement of minor items of utility plant are charged to expense as incurred. Allowance for Funds Used during Construction, or AFUDC, is a non-cash credit to income with a corresponding charge to utility plant that represents the cost of borrowed funds or a return on equity funds devoted to plant under construction. Presented in the table below is AFUDC for the years ended December 31:
In thousands |  |  |  |  |  |  |  |
|  | 2024 |  |  | 2023 |  |  | 2022
AFUDC - Debt | $ | 509 |  | $ | 759 |  | $ | 435
AFUDC - Equity | $ | 1,135 |  | $ | 1,243 |  | $ | 894
Utility plant comprises: |  |  |  |  |  |  |  |  |  |  |  |
In thousands |  |  |  |  |  |  |  |  |  |  |  |
|  | Estimated Useful Life (In Years) |  |  |  |  |  | Estimated Useful Life (In Years) |  |  |  |
|  | Effective June 12, 2024 |  |  | December 31, 2024 |  |  |  |  |  | December 31, 2023 |
Utility plant at original cost |  |  |  |  |  |  |  |  |  |  |  |
Utility plant in service-Water |  |  |  |  |  |  |  |  |  |  |  |
Intangible plant |  |  | — |  |  | $ | 140 |  |  |  | — |  |  | $ | 140 |
Source of supply plant |  |  | 45-85 |  |  |  | 30,320 |  |  |  | 45-85 |  |  |  | 29,960 |
Pumping and water treatment plant |  |  | 15-64 |  |  |  | 130,226 |  |  |  | 8-62 |  |  |  | 130,337 |
Transmission and distribution plant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mains |  |  | 73-81 |  |  |  | 390,741 |  |  |  | 81 |  |  |  | 370,977 |
Services |  |  | 39-58 |  |  |  | 63,613 |  |  |  | 39 |  |  |  | 60,818 |
Storage tanks |  |  | 70-76 |  |  |  | 39,760 |  |  |  | 76 |  |  |  | 40,933 |
Meters |  |  | 16-26 |  |  |  | 30,223 |  |  |  | 26 |  |  |  | 30,318 |
Hydrants |  |  | 60-68 |  |  |  | 20,158 |  |  |  | 60 |  |  |  | 18,980 |
General plant |  |  | 5-81 |  |  |  | 59,634 |  |  |  | 5-31 |  |  |  | 67,317 |
Utility plant in service-Wastewater |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible plant |  |  | — |  |  |  | 116 |  |  |  | — |  |  |  | 116 |
Treatment and disposal plant |  |  | 20-81 |  |  |  | 71,332 |  |  |  | 20-81 |  |  |  | 67,789 |
Collection mains & lift stations |  |  | 70-81 |  |  |  | 57,084 |  |  |  | 70-81 |  |  |  | 51,539 |
General plant |  |  | 5-31 |  |  |  | 2,632 |  |  |  | 5-31 |  |  |  | 2,478 |
Property held for future use |  |  | — |  |  |  | 3,742 |  |  |  | — |  |  |  | 4,028 |
Construction work in progress |  |  | — |  |  |  | 39,718 |  |  |  | — |  |  |  | 23,724 |
|  |  |  |  |  |  | 939,439 |  |  |  |  |  |  |  | 899,454 |
Less – accumulated depreciation |  |  |  |  |  |  | 192,253 |  |  |  |  |  |  |  | 185,170 |
|  |  |  |  |  | $ | 747,186 |  |  |  |  |  |  | $ | 714,284 |
Depreciation and Amortization | Depreciation and Amortization For financial reporting purposes, depreciation is recorded using the straight-line method at rates based on estimated economic useful lives, which range from 5 to 85 years. Composite depreciation rates for water utility plant were 1.93%, 2.13% and 2.16% for 2024, 2023 and 2022, respectively. In a rate order issued by the DEPSC, the Company was directed, effective June 12, 2024, to begin using revised depreciation rates for utility plant in Artesian Water, which are based on the estimated useful life years noted in the table above. Artesian Water offsets depreciation recorded on utility plant by depreciation on utility property funded by Contributions in Aid of Construction, or CIAC, and Advances for Construction, or Advances. This reduction in depreciation expense is also netted against outstanding CIAC and Advances on the Consolidated Balance Sheet. Certain other deferred assets are amortized using the straight-line method over applicable lives, which range from 20 to 24 years.
Regulatory Assets | Regulatory Assets The FASB ASC Topic 980 stipulates generally accepted accounting principles for companies whose rates are established or subject to approvals by a third-party regulatory agency. Certain expenses are recoverable through rates charged to our customers, without a return on investment, and are deferred and amortized during future periods using various methods as permitted by the DEPSC, MDPSC, and PAPUC. The deferred income taxes will be amortized over future years as the tax effects of temporary differences that previously flowed through to our customers are reversed. Debt related costs include debt issuance costs and other debt related expense. The DEPSC has approved deferred regulatory accounting treatment for issuance costs associated with Artesian Water’s First Mortgage bonds. Debt issuance costs and other debt related expenses are reviewed during Artesian Water’s rate applications as part of its cost of capital calculations. Affiliated interest agreement deferred costs relate to the regulatory and administrative costs resulting from efforts necessary to secure water allocations in Artesian Water Pennsylvania’s territory for the provision of service to the surrounding area and interconnection to Artesian Water Pennsylvania’s affiliate regulated water utility Artesian Water. These costs were specifically included for cost recovery pursuant to an Affiliated Interest Agreement between Artesian Water and Artesian Water Pennsylvania and were approved for recovery by the PAPUC and were reclassified from deferred costs to a regulatory asset in 2022. Amortization of these deferred costs began in the fourth quarter of 2023. Deferred acquisition adjustments represent the excess payment for purchases of utility plant from Delaware municipalities over the determined original cost net of depreciation. Deferred acquisition costs represent the closing cost associated with the acquisitions. Costs of $3.7 million were reclassified from net utility plant and $0.1 million were reclassified from contributions in aid of construction, which are being amortized over the periods noted in the table below and recovered in customer rates effective June 12, 2024 as part of the DEPSC approved settlement agreement for the Artesian Water rate application filed on April 28, 2023. Unrecovered reserve for depreciation of $4.3 million is the result of the implementation of a change in depreciation methods for certain general plant assets that are being amortized over five years and recovered in customer rates effective June 12, 2024 as part of the DEPSC approved settlement agreement for the Artesian Water rate application filed on April 28, 2023. Amortization of these deferred costs began in the third quarter of 2024. Regulatory expenses amortized on a straight-line basis are noted below:
Expense | Years Amortized
Deferred contract costs and other | 5
Rate case studies | 5
Delaware rate proceedings | 3
Debt related costs | 15 to 30 (based on term of related debt)
Deferred costs affiliated interest agreement | 20
Goodwill (Mountain Hill Water Company acquisition in 2008) | 50
Deferred acquisition and franchise costs - Maryland | 20 – 80
Deferred acquisition costs – Delaware | 20
Deferred acquisition adjustments - Delaware | 36 – 62
Unrecovered reserve for depreciation (general plant assets) | 5
Regulatory assets, net of amortization, comprise:
(in thousands) | December 31, 2024 |  | December 31, 2023
Deferred contract costs and other | $ | 161 |  | $ | 209
Rate case studies |  | 141 |  |  | 166
Delaware rate proceedings |  | 474 |  |  | 355
Deferred income taxes |  | 423 |  |  | 444
Debt related costs |  | 3,969 |  |  | 4,322
Deferred costs affiliated interest agreement |  | 1,054 |  |  | 1,110
Goodwill |  | 251 |  |  | 258
Deferred acquisition and franchise costs - Maryland |  | 499 |  |  | 425
Deferred acquisition costs – Delaware |  | 231 |  |  | —
Deferred acquisition adjustments – Delaware |  | 3,359 |  |  | —
Unrecovered reserve for depreciation |  | 3,866 |  |  | —
| $ | 14,428 |  | $ | 7,289
Impairment or Disposal of Long-Lived Assets | Impairment or Disposal of Long-Lived Assets Our long-lived assets consist primarily of utility plant in service and regulatory assets. A review of our long-lived assets is performed in accordance with the requirements of FASB ASC Topic 360. In addition, the regulatory assets are reviewed for the continued application of FASB ASC Topic 980. The review determines whether there have been changes in circumstances or events that have occurred requiring adjustments to the carrying value of these assets. FASB ASC Topic 980 stipulates that adjustments to the carrying value of these assets would be made in instances where the inclusion in the rate-making process is unlikely. For the years ended December 31, 2024, 2023 and 2022, there was no impairment or regulatory disallowance identified in our review.
Goodwill | Goodwill The Company records goodwill when the purchase price of a business combination exceeds the estimated fair value of net identified tangible and intangible assets acquired. At December 31, 2024 and December 31, 2023, the Company had approximately $1.9 million of goodwill, respectively. The $1.9 million of goodwill arose from the January 2022 acquisition of Tidewater Environmental Services, Inc. Artesian Wastewater operates as the parent holding company of Tidewater Environmental Services, Inc. dba Artesian Wastewater, or TESI, and is a subsidiary of our Regulated Utility segment. In accordance with the accounting guidance for testing goodwill for impairment, the Company performs an annual assessment. In 2023 and 2024, the Company used the optional qualitative assessment, “step zero”, to identify and evaluate relevant events and circumstances to conclude whether it is more likely than not that the fair value of its reporting unit is less than its carrying amount, including goodwill. Relevant events and circumstances assessed included macroeconomic conditions, industry and market conditions, cost factors, financial performance, management and overall strategy. After evaluating and weighing these relevant events and circumstances, it was concluded that there was no impairment of goodwill and it was not necessary to perform quantitative testing.
Other Deferred Assets | Other Deferred Assets The investment in CoBank, ACB, or CoBank, which is a cooperative bank, is related to certain outstanding First Mortgage Bonds and is a required investment in the bank based on the underlying long-term debt agreements. The settlement agreement receivable is related to the long-term portion of reimbursements as further discussed in Note 1 – Accounts Receivable. Other deferred assets at December 31, net of amortization, comprise:
In thousands |  | 2024 |  |  | 2023 |
Investment in CoBank |  | $ | 6,425 |  |  | $ | 5,882 |
Settlement agreement receivable-long term |  |  | — |  |  |  | 2,496 |
Other deferred assets |  |  | 100 |  |  |  | 126 |
|  | $ | 6,525 |  |  | $ | 8,504 |
Advances for Construction | Advances for Construction Cash advances to reimburse Artesian Water for its costs to construct water mains, services and hydrants are contributed to Artesian Water by real estate developers and builders in order to extend water service to their properties. The value of these contributions is recorded as Advances for Construction. Artesian Water makes refunds on these advances over a specific period of time based on operating revenues generated by the specific plant or as new customers are connected to the mains. After all refunds are made within the contract period, any remaining balance is transferred to CIAC.
Contributions in Aid of Construction | Contributions in Aid of Construction CIAC includes the non-refundable portion of advances for construction and direct contributions of water mains, services and hydrants, and wastewater treatment facilities and collection systems, or cash to reimburse our water and wastewater subsidiaries for costs to construct water mains, services and hydrants, and wastewater treatment and disposal plants. Effective with the Tax Cuts and Jobs Act, or TCJA, in 2017 CIAC was taxable and the DEPSC, MDPSC and PAPUC allowed the Company to collect additional CIAC to pay the associated tax. In 2021, legislation was enacted to amend the TCJA, which now exempts CIAC from income taxes for regulated water and wastewater utilities, effective for all of 2021 and forward. For the year ended December 31, 2023, Artesian Water received approximately $3.8 million in grant funding from the State of Delaware, Delaware Department of Health and Social Services, Division of Public Health, or DPH, pursuant to grant agreements. For the year ended December 31, 2024, Artesian Water did not receive grant funding. The grants received in 2023 were used by Artesian Water to cover the costs associated with certain construction projects. The grant funds received under the grant agreements were recorded in accordance with the requirements under FASB ASC Topic 980, in Net contributions in aid of construction in the Consolidated Balance Sheets. Pursuant to the grant agreements, Artesian Water is no longer eligible to receive grant funds under these grants.
Regulatory Liabilities | Regulatory Liabilities FASB ASC Topic 980 stipulates generally accepted accounting principles for companies whose rates are established or subject to approvals by a third-party regulatory agency. Certain obligations are deferred and/or amortized as determined by the DEPSC, MDPSC, and PAPUC. Regulatory liabilities represent excess recovery of cost or other items that have been deferred because it is probable such amounts will be returned to customers through future regulated rates. Utility plant retirement cost obligation consists of estimated costs related to the potential removal and replacement of facilities and equipment on the Company’s water and wastewater properties. As authorized by the DEPSC, when depreciable units of utility plant are retired, any cost associated with retirement, less any salvage value or proceeds received, is charged to a regulated retirement liability. The annual amortization currently authorized by the DEPSC could be adjusted in future rate applications. Deferred settlement refunds consist of reimbursements from the Delaware Sand and Gravel Remedial Trust, or Trust for Artesian Water’s past capital and operating costs, totaling approximately $10.0 million, related to the treatment costs associated with the release of contaminants from the Delaware Sand & Gravel Landfill Superfund Site, or Site in groundwater that Artesian Water uses for public potable water supply, pursuant to the Settlement Agreement. Three installments for approximately $2.5 million each were paid in August 2022, July 2023 and July 2024. The final $2.5 million installment payment is due no later than July 2025. Artesian Water received approval from the DEPSC in October 2022 to refund to its customers these reimbursements for past capital and operating costs. The refund for the reimbursements is applied to current and future customer bills in annual installments. The first three refunds occurred in October 2022, August 2023 and August 2024. The final customer refund will occur no later than August 2025. The amount of the credit will be calculated by dividing the amount of the reimbursement by the number of eligible customers. Beginning in 2022, Artesian Water began recording recovery of capital expenditures as Contributions in Aid of Construction and began recording expense recovery as an offset to operations and maintenance expense, with the intention that those recoveries will be available for inclusion and consideration in any future rate applications. Pursuant to the enactment of the Tax Cuts and Jobs Act, or TCJA, on December 22, 2017, the Company adjusted its existing deferred income tax balances to reflect the decrease in the corporate income tax rate from 34% to 21% (see Note 7 – Income Taxes) resulting in a decrease in the net deferred income tax liability of $24.3 million, of which $22.8 million was reclassified to a regulatory liability related to Artesian Water and Artesian Water Maryland. The regulatory liability amount is subject to certain Internal Revenue Service normalization rules that require the benefits to customers be spread over the remaining useful life of the underlying assets giving rise to the associated deferred income taxes. On January 31, 2019, the DEPSC approved Artesian Water to amortize the regulatory liability amount of $22.2 million over a period of 49.5 years beginning February 1, 2018, subject to audit at a later date. In May 2022, Artesian Water received a rate order from the DEPSC instructing Artesian Water to continue amortizing the liability over a period of 49.5 years, subject to review in Artesian Water’s next base rate filing. On June 12, 2024, the DEPSC approved a settlement agreement for the Artesian Water rate application, filed on April 28, 2023, that required two changes to the deferred income tax regulatory liability effective June 12, 2024. A $7.6 million gross-up adjustment was recorded to reflect the benefit customers would receive from the implementation of new base rates and $4.0 million of the regulatory liability, which represents costs not subject to IRS normalization rules, is now required to be amortized over a six-year period rather than 49.5 years. The MDPSC has not issued a final order on the regulatory liability amount of $0.6 million regarding the effects of the TCJA on Maryland customers.
Income Taxes | Income Taxes Deferred income taxes are provided in accordance with FASB ASC Topic 740 on all differences between the tax basis of assets and liabilities and the amounts at which they are carried in the consolidated financial statements based on the enacted tax rates expected to be in effect when such temporary differences are expected to reverse. The Company’s rate regulated subsidiaries recognize regulatory liabilities, to the extent considered in ratemaking, for deferred taxes provided in excess of the current statutory tax rate and regulatory assets for deferred taxes provided at rates less than the current statutory rate. Such tax-related regulatory assets and liabilities are reported at the revenue requirement level and amortized to income as the related temporary differences reverse, generally over the lives of the related properties. Under FASB ASC Topic 740, an uncertain tax position represents our expected treatment of a tax position taken, or planned to be taken in the future, that has not been reflected in measuring income tax expense for financial reporting purposes. The Company establishes reserves for uncertain tax positions based upon management’s judgment as to the sustainability of these positions. These accounting estimates related to the uncertain tax position reserve require judgments to be made as to the sustainability of each uncertain tax position based on its technical merits. The Company believes its tax positions comply with applicable law and that it has adequately recorded reserves as required. However, to the extent the final tax outcome of these matters is different than the estimates recorded, the Company would then adjust its tax reserves or unrecognized tax benefits in the period that this information becomes known. The Company has elected to recognize accrued interest (net of related tax benefits) and penalties related to uncertain tax positions as a component of its income tax expense. For the full year 2023, the Company accrued approximately $12,000 in penalties and interest related to positions taken on the 2022 corporate income tax return. For the full year 2024, the Company has accrued approximately $17,000 in penalties and interest related to positions taken on the 2022 corporate income tax return. The Company remains subject to examination by federal and state authorities for the tax years 2021 through 2024. Investment tax credits were deferred through 1986 and are recognized as a reduction of deferred income tax expense over the estimated economic useful lives of the related assets.
Stock Compensation Plans | Stock Compensation Plans See Note 9 (Stock Compensation Plans) to our Consolidated Financial Statements for a full description of our stock compensation plans.
Revenue Recognition and Unbilled Revenues | Revenue Recognition and Unbilled Revenues See Note 2 (Revenue Recognition) to our Consolidated Financial Statements for a full description of our revenue recognition.
Leases | Leases The Company has agreements for land easements and office equipment under operating leases. Management makes certain estimates and assumptions regarding each lease agreement, renewal and amendment, including, but not limited to, discount rates and probable term, which can impact the escalations in payment that are taken into consideration when calculating the straight-line basis. The amount of rent expense and income reported could vary if different estimates and assumptions are used. Management also makes certain estimates and assumptions regarding the fair value of the leased property at lease commencement and the separation of lease and nonlease components. See Note 3 (Leases) to our Consolidated Financial Statements for a full description of our leases.
Accounts Receivable | Accounts Receivable Accounts receivable are recorded at the invoiced amounts. As set forth in a settlement agreement, Artesian Water will receive reimbursements from the Trust, for Artesian Water’s past capital and operating costs, totaling approximately $10.0 million, related to the treatment costs associated with the release of contaminants from the Site, in groundwater that Artesian Water uses for public potable water supply. Three installments for approximately $2.5 million each were paid in August 2022, July 2023 and July 2024. The final $2.5 million installment payment is due no later than July 2025. In addition, the Trust shall reimburse Artesian Water for documented reasonable and necessary capital and operating costs after July 1, 2021 that Artesian Water incurs to treat contaminants of concern and of emerging concern. A provision for expected credit loss is calculated as a percentage of total associated revenues based upon historical trends and adjusted for current and reasonable projections based upon expected economic conditions. We mitigate our exposure to credit losses by discontinuing services in the event of non-payment; accordingly, the related provision for expected credit loss and associated bad debt expense has not been significant. The provision for expected credit loss was $0.3 million and $0.3 million at December 31, 2024 and December 31, 2023, respectively. The corresponding expense for the years ended December 31, 2024 and 2023 was $0.2 million and $0.1 million, respectively, reported in Operating expenses – Utility and Non-utility operating expenses on the Company’s Consolidated Statements of Operations.The following table summarizes the changes in the Company’s accounts receivable balance:
|  | December 31, |
In thousands |  | 2024 |  |  | 2023 |  |  | 2022 |
Customer accounts receivable – water |  | $ | 6,824 |  |  | $ | 6,573 |  |  | $ | 5,981 |
Customer accounts receivable – wastewater |  |  | 928 |  |  |  | 869 |  |  |  | 767 |
Customer accounts receivable – SLP Plan |  |  | 470 |  |  |  | 409 |  |  |  | 384 |
Settlement agreement receivable – short term |  |  | 2,523 |  |  |  | 2,747 |  |  |  | 2,532 |
Developer receivable |  |  | 837 |  |  |  | 2,089 |  |  |  | 1,151 |
Miscellaneous accounts receivable |  |  | 100 |  |  |  | 471 |  |  |  | 3,112 |
|  |  | 11,682 |  |  |  | 13,158 |  |  |  | 13,927 |
Less provision for expected credit loss |  |  | 343 |  |  |  | 328 |  |  |  | 416 |
Net accounts receivable |  | $ | 11,339 |  |  | $ | 12,830 |  |  | $ | 13,511 |
The activities in the provision for expected credit loss are as follows:
|  | December 31, |
In thousands |  | 2024 |  |  | 2023 |
Beginning balance |  | $ | 328 |  |  | $ | 416 |
Provision adjustments |  |  | 204 |  |  |  | 92 |
Recoveries |  |  | 29 |  |  |  | 48 |
Write off of uncollectible accounts |  |  | (218 | ) |  |  | (228 | )
Ending balance |  | $ | 343 |  |  | $ | 328 |
Cash and Cash Equivalents | Cash and Cash Equivalents For purposes of the Consolidated Statement of Cash Flows, Artesian Resources considers all temporary cash investments with an original maturity of three months or less to be cash equivalents. The Company utilizes its bank’s zero balance account disbursement service to reduce the use of their lines of credit by funding checks as they are presented to the bank for payment rather than at issuance. If the checks currently outstanding, but not yet funded, exceed the cash balance on our books, the net liability is recorded as a current liability on the Consolidated Balance Sheet in the Overdraft Payable account.
Inventories | Inventories Inventories consist of materials and supplies related to water and wastewater utility plant. These materials and supplies are used for new construction and repairs and are recorded at the purchase cost. Usage costs are determined by the first-in, first-out method. The Company adjusts inventory value based on historical usage and forecasted demand.

X
- Definition Disclosure of accounting policy for contributions in aid of construction. + References No definition available. + Details
Name: | artna_ContributionsInAidOfConstructionsPolicyTextBlock
Namespace Prefix: | artna_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for regulated utility accounting. + References No definition available. + Details
Name: | artna_RegulatedUtilityAccountingPolicyTextBlock
Namespace Prefix: | artna_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References No definition available. + Details
Name: | us-gaap_BasisOfAccountingPolicyPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-1 + Details
Name: | us-gaap_CashAndCashEquivalentsPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for salaries, bonuses, incentive awards, postretirement and postemployment benefits granted to employees, including equity-based arrangements; discloses methodologies for measurement, and the bases for recognizing related assets and liabilities and recognizing and reporting compensation expense. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_CompensationRelatedCostsPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for construction contractors. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 910 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482332/910-20-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 910 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482546/910-10-50-2 + Details
Name: | us-gaap_ConstructionContractorsPolicyPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for deferral and amortization of significant deferred charges. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DeferredChargesPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for depreciation, depletion, and amortization of property and equipment costs, including methods used and estimated useful lives and how impairment of such assets is assessed and recognized. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483426/235-10-50-4 + Details
Name: | us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for goodwill. This accounting policy also may address how an entity assesses and measures impairment of goodwill, how reporting units are determined, how goodwill is allocated to such units, and how the fair values of the reporting units are determined. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482548/350-20-55-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
Name: | us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for recognizing and measuring the impairment of long-lived assets. An entity also may disclose its accounting policy for long-lived assets to be sold. This policy excludes goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.CC) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480091/360-10-S99-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 05 -Paragraph 4 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482338/360-10-05-4 + Details
Name: | us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-20 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 19 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-19 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482525/740-10-45-25 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(h)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 17 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-17 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-9 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482525/740-10-45-28 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482765/220-10-50-1 + Details
Name: | us-gaap_IncomeTaxPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483080/330-10-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483489/210-10-50-1 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483426/235-10-50-4 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 912 -SubTopic 330 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478411/912-330-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/330/tableOfContent Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483080/330-10-50-4 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 6 -Subparagraph (a) -SubTopic 10 -Topic 270 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482989/270-10-45-6 + Details
Name: | us-gaap_InventoryPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for leasing arrangement entered into by lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-1 + Details
Name: | us-gaap_LesseeLeasesPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for reclassification affecting comparability of financial statement. Excludes amendment to accounting standards, other change in accounting principle, and correction of error. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 205 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483504/205-10-50-1 + Details
Name: | us-gaap_PriorPeriodReclassificationAdjustmentDescription
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for public utilities. Examples include a discussion about the scope criteria and appropriateness for and extent of the application of generally accepted accounting principles related to accounting for the effects of certain types of regulation (may include identification of specific business units). Other examples of the disclosures may include: descriptions of the form and economic effects of regulation (for example, but not limited to, recording of regulatory assets and liabilities to the rate setting process); statement about periodic assessments of periodic assessments of generally accepted accounting principles related to accounting for the effects of certain types of regulation; information regarding amortization of and return on regulatory assets and liabilities, including the remaining amounts and recovery or settlement periods; accounting for changes to recovery estimates; AFUDC, plant abandonment's and plant disallowances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 05 -Paragraph 1 -SubTopic 10 -Topic 980 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482115/980-10-05-1 + Details
Name: | us-gaap_PublicUtilitiesPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for receivable. Includes, but is not limited to, accounts receivable and financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481569/310-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-2 + Details
Name: | us-gaap_ReceivablesPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for systematically allocating capitalized costs to periods that benefit from the use thereof. Includes, but is not limited to, methods used, such as composite depreciation, descriptions of regulatory treatment for estimated removal and disposal costs, and description of amortization of plant-related regulatory assets. + References No definition available. + Details
Name: | us-gaap_RegulatoryDepreciationAndAmortizationPolicy
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for income taxes, including investment tax credits, and the related regulatory treatment (for example, whether deferred income tax accounting - normalization - is allowed in rate making). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 740 -Name Accounting Standards Codification -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479068/980-740-25-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 740 -Name Accounting Standards Codification -Section 25 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479068/980-740-25-2 + Details
Name: | us-gaap_RegulatoryIncomeTaxesPolicy
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for revenue. Includes revenue from contract with customer and from other sources. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483426/235-10-50-4 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (e) -SubTopic 10 -Topic 235 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483426/235-10-50-4 + Details
Name: | us-gaap_RevenueRecognitionPolicyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-9 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -SubTopic 10 -Topic 275 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -SubTopic 10 -Topic 275 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 11 -SubTopic 10 -Topic 275 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-11 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 12 -SubTopic 10 -Topic 275 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-12 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-8 + Details
Name: | us-gaap_UseOfEstimates
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration