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Fair Values of Financial Instruments (Narrative) (Details)
12 Months Ended
Dec. 31, 2022
USD ($)
loan
Dec. 31, 2021
USD ($)
loan
Impaired Loans [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 413,000 $ 1,402,000
Impaired Financing Receivable, Recorded Investment 463,000 1,674,000
Impaired Financing Receivable, Related Allowance $ 50,000 $ 272,000
Number of impaired loans not requiring a valuation allowance | loan 2 3
Impaired Financing Receivable, with No Related Allowance, Recorded Investment $ 413,000 $ 157,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment 50,000 1,517,000
Impaired Loans, Cumulative Charge-Offs $ 0 0
Loan [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Number of loans with related allowance | loan 1  
Impaired Financing Receivable, with Related Allowance, Recorded Investment $ 50,000 $ 1,517,000
Number of impaired loans, with related allowance | loan   1
Valuation allowance 50,000 $ 272,000
Impaired Loans, Cumulative Charge-Offs $ 0 $ 0