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Utility Plant - Schedule of Utility Plant (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Utility Plant	$ 562,267	$ 512,993
Transmission and distribution plant
Property, Plant and Equipment [Line Items]
Utility Plant	342,068	321,075
Equipment
Property, Plant and Equipment [Line Items]
Utility Plant	75,931	67,917
Office buildings and other structures
Property, Plant and Equipment [Line Items]
Utility Plant	68,858	67,313
Construction work-in-progress
Property, Plant and Equipment [Line Items]
Utility Plant	73,095	54,388
Land
Property, Plant and Equipment [Line Items]
Utility Plant	$ 2,315	$ 2,300

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A

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Period end amount of total gross PPE.

+ References

No definition available.

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