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LOANS: (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group $ 4.2 $ 7.1
Loans serviced for others, not reported as assets 542.8 490.4
Escrow deposit 3.0 3.0
Fair value, based on valuations $ 2.7 $ 2.4
Assumptions used to estimate fair value, discount rate (percent) 12.50% 12.50%
Assumptions used to estimate fair value, weighted average life 8 years  
Director and Executive Officer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Beginning Balance $ 57.5  
Advances 57.5  
Repayments 64.1  
Ending Balance $ 50.9 $ 57.5
Maximum    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assumptions used to estimate fair value, prepayment speed (percent) 453.00% 403.00%
Minimum    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assumptions used to estimate fair value, prepayment speed (percent) 185.00% 239.00%