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Taxes Other than Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Components of Taxes Other than Income Taxes [Abstract]    
Regulatory assessment $ 332 $ 298
Property 377 353
Payroll, net of amounts capitalized 575 551
Other 4 3
Total taxes other than income taxes $ 1,288 $ 1,205