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Derivative and Other Financial Instruments with Off-Balance Sheet Risks: Schedule of Undisbursed Funds Commitments (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Jun. 30, 2017
Derivative [Line Items]    
Undisbursed funds on existing lines of credit and commitments to originate loans $ 14,652 $ 29,342
Undisbursed Loan Funds - Construction Loans    
Derivative [Line Items]    
Undisbursed funds on existing lines of credit and commitments to originate loans 4,302 9,015
Undisbursed Lines of Credit - Commercial Business Loans    
Derivative [Line Items]    
Undisbursed funds on existing lines of credit and commitments to originate loans 495 646
Undisbursed Lines of Credit - Consumer Loans    
Derivative [Line Items]    
Undisbursed funds on existing lines of credit and commitments to originate loans 503 562
Commitments to Extend Credit, Loans to be Held for Investment    
Derivative [Line Items]    
Undisbursed funds on existing lines of credit and commitments to originate loans $ 9,352 $ 19,119