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Long-Term Debt 2 (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Annual maturities of all long-term debt, including capitalized leases    
Total $ 284,699 $ 324,978
GSWC    
Annual maturities of all long-term debt, including capitalized leases    
2019 344  
2020 365  
2021 392  
2022 406  
2023 425  
Thereafter 282,767  
Total $ 284,699 $ 324,978