Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Disaggregation of Revenue [Line Items]
Total revenue	$ 55,758	$ 52,692
Water service
Disaggregation of Revenue [Line Items]
Total revenue	28,609	26,064
Regulated Operation | Water service
Disaggregation of Revenue [Line Items]
Total revenue	28,609	26,064
Regulated Operation | Water service | Residential
Disaggregation of Revenue [Line Items]
Total revenue	19,948	18,612
Regulated Operation | Water service | Irrigation
Disaggregation of Revenue [Line Items]
Total revenue	4,084	3,332
Regulated Operation | Water service | Commercial
Disaggregation of Revenue [Line Items]
Total revenue	1,945	1,551
Regulated Operation | Water service | Multi-family
Disaggregation of Revenue [Line Items]
Total revenue	439	320
Regulated Operation | Water service | Construction
Disaggregation of Revenue [Line Items]
Total revenue	1,156	1,140
Regulated Operation | Water service | Other water revenue
Disaggregation of Revenue [Line Items]
Total revenue	1,037	1,109
Regulated Operation | Wastewater and recycled water service
Disaggregation of Revenue [Line Items]
Total revenue	27,149	26,628
Regulated Operation | Wastewater and recycled water service | Residential
Disaggregation of Revenue [Line Items]
Total revenue	23,803	23,404
Regulated Operation | Wastewater and recycled water service | Commercial
Disaggregation of Revenue [Line Items]
Total revenue	1,186	1,195
Regulated Operation | Wastewater and recycled water service | Multi-family
Disaggregation of Revenue [Line Items]
Total revenue	300	174
Regulated Operation | Wastewater and recycled water service | Recycled water revenue
Disaggregation of Revenue [Line Items]
Total revenue	1,501	1,500
Regulated Operation | Wastewater and recycled water service | Other wastewater revenue
Disaggregation of Revenue [Line Items]
Total revenue	$ 359	$ 355