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Business Description And Significant Accounting Policies: Property, Plant and Equipment (AFUDC) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Interest expense incurred net of amounts capitalized (including amortization of debt issuance costs, premiums and discounts)      
AFUDC Borrowed $ 5,638 $ 4,068 $ 5,617
Other Nonoperating Income (Expense)      
AFUDC Equity $ 644 $ 593 $ 318