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Investment Securities - Investments with Unrealized Loss Positions for total investment securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Jun. 30, 2024
Investment Securities    
Unrealized Holding Losses Less Than 12 Months, Fair Value $ 446 $ 546
Unrealized Holding Losses Less Than 12 Months, Unrealized Losses 3  
Unrealized Holding Losses 12 Months or More, Fair Value 100,517 110,203
Unrealized Holding Losses 12 Months or More, Unrealized Losses 13,881 15,751
Unrealized Holding Losses Total, Fair Value 100,963 110,749
Unrealized Holding Losses Total, Unrealized Losses $ 13,884 $ 15,751