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Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Total revenue	$ 14,241	$ 13,510	$ 26,698	$ 25,120
Water service
Disaggregation of Revenue [Line Items]
Total revenue	7,368	6,668	13,348	11,894
Regulated Operation
Disaggregation of Revenue [Line Items]
Total revenue	14,241	13,510	26,698	25,120
Regulated Operation | Water service
Disaggregation of Revenue [Line Items]
Total revenue	7,368	6,668	13,348	11,894
Regulated Operation | Water service | Residential
Disaggregation of Revenue [Line Items]
Total revenue	4,990	4,807	9,377	8,969
Regulated Operation | Water service | Irrigation
Disaggregation of Revenue [Line Items]
Total revenue	1,173	887	1,793	1,254
Regulated Operation | Water service | Commercial
Disaggregation of Revenue [Line Items]
Total revenue	412	384	795	711
Regulated Operation | Water service | Multi-family
Disaggregation of Revenue [Line Items]
Total revenue	111	79	192	137
Regulated Operation | Water service | Construction
Disaggregation of Revenue [Line Items]
Total revenue	424	240	751	393
Regulated Operation | Water service | Other water revenue
Disaggregation of Revenue [Line Items]
Total revenue	258	271	440	430
Regulated Operation | Wastewater and recycled water service
Disaggregation of Revenue [Line Items]
Total revenue	6,873	6,842	13,350	13,226
Regulated Operation | Wastewater and recycled water service | Residential
Disaggregation of Revenue [Line Items]
Total revenue	5,928	5,977	11,797	11,811
Regulated Operation | Wastewater and recycled water service | Commercial
Disaggregation of Revenue [Line Items]
Total revenue	293	312	580	617
Regulated Operation | Wastewater and recycled water service | Multi-family
Disaggregation of Revenue [Line Items]
Total revenue	58	42	107	81
Regulated Operation | Wastewater and recycled water service | Recycled water revenue
Disaggregation of Revenue [Line Items]
Total revenue	505	406	698	527
Regulated Operation | Wastewater and recycled water service | Other wastewater revenue
Disaggregation of Revenue [Line Items]
Total revenue	$ 89	$ 105	$ 168	$ 190

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