XML 46 R35.htm IDEA: XBRL DOCUMENT
v3.25.3

REGULATORY LIABILITIES (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2025
REGULATORY LIABILITIES [Abstract] |
Regulatory Liabilities | Regulatory liabilities comprise:
|  | (in thousands) |  |  |  |
|  | September 30, 2025 |  |  | December 31, 2024 |
Utility plant retirement cost obligation | $ | 207 |  | $ | 279 |
Deferred settlement refunds |  | - |  |  | 2,496 |
Deferred income taxes (related to TCJA) |  | 26,518 |  |  | 27,492 |
| $ | 26,725 |  | $ | 30,267 |

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

X
- Definition Tabular disclosure of regulatory liabilities. Detailed information about liabilities that result from rate actions of a regulator. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 405 -Name Accounting Standards Codification -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477571/980-405-25-1 + Details
Name: | us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration