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Investment Securities - Investments with Unrealized Loss Positions for total investment securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Jun. 30, 2020
Investment Securities    
Unrealized Holding Losses Less Than 12 Months, Fair Value $ 10,188 $ 12,928
Unrealized Holding Losses Less Than 12 Months, Unrealized Losses 64 52
Unrealized Holding Losses 12 Months or More, Fair Value 1,886 2,040
Unrealized Holding Losses 12 Months or More, Unrealized Losses 17 17
Unrealized Holding Losses Total, Fair Value 12,074 14,968
Unrealized Holding Losses Total, Unrealized Losses $ 81 $ 69