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Securities (Details) - USD ($)
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Investments, Debt and Equity Securities [Abstract]    
Held-to-maturity mortgage-backed securities $ 258,000 $ 67,000
Unrealized gain (loss) on securities 2,000 3,000
Pledged securities 1,800,000 1,900,000
Time deposits $ 1,500,000 $ 1,500,000