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General - Schedule of Nonutility Properties and Real Estate Investments (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Schedule of Investments [Line Items]    
Land $ 4,134 $ 4,137
Wholesale water supply assets 8,465 8,465
Buildings and improvements 778 748
Nonutility properties and real estate investments 13,377 13,350
Less accumulated depreciation and amortization 195 194
Net nonutility properties and real estate investments 13,182 $ 13,156
Warehouse Building    
Schedule of Investments [Line Items]    
Land 13,170  
Buildings and improvements 44,950  
Nonutility properties and real estate investments 58,120  
Less accumulated depreciation and amortization 17,270  
Net nonutility properties and real estate investments $ 40,850