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Note 7. Commitments and Contingent Liabilities - Guarantees Textuals (Details) - USD ($)
Jun. 30, 2020
Jun. 30, 2019
Contingent Liabilities    
Other Commitment $ 400,000 $ 900,000
Guarantee Obligations    
Contingent Liabilities    
Loss Contingency Accrual, at Carrying Value 0 0
Financial Standby Letter of Credit    
Contingent Liabilities    
Unused standby letters of credit 400,000 400,000
Loss Contingency Accrual, at Carrying Value $ 0 $ 0