Fair Value: Schedule of quantitative information about Level 3 Fair Value Measurements on a nonrecurring basis (Details) - Loans Receivable - Significant Unobservable Inputs (Level 3) - Market Approach Valuation Technique - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial instruments, range	0.00%	0.00%
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial instruments, range	0.00%	6.91%
Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial instruments, range	0.00%	0.06%
Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	$ 45,850	$ 48,521