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General - Schedule of Nonutility Properties and Real Estate Investments (Details) - USD ($)
$ in Thousands
Jun. 30, 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 777 748
Nonutility properties and real estate investments 13,376 13,350
Less accumulated depreciation and amortization 96 194
Net nonutility properties and real estate investments $ 13,280 13,156
Tennessee Properties    
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