Revenue Recognition from Contracts with Customers - Schedule of Operating Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Regulated Tariff Sales
Non-Regulated Contract Operations	$ 2,833	$ 3,088
Total Revenue from Contracts with Customers	44,267	40,493
Other Regulated Revenues	62	60
Other Non-Regulated Revenues	119	116
Inter-segment Elimination	(147)	(145)
Total Revenue	44,301	40,524
Residential [Member]
Regulated Tariff Sales
Regulated Tariff Sales	23,114	20,331
Commercial [Member]
Regulated Tariff Sales
Regulated Tariff Sales	6,585	5,976
Industrial [Member]
Regulated Tariff Sales
Regulated Tariff Sales	2,999	3,133
Fire Protection [Member]
Regulated Tariff Sales
Regulated Tariff Sales	3,722	3,292
Wholesale [Member]
Regulated Tariff Sales
Regulated Tariff Sales	$ 5,014	$ 4,673

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