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Investment Securities - Schedule of Held to maturity Securities by Contractual Maturity (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Jun. 30, 2023
Held to maturity, Amortized Cost    
Due in one year or less $ 101 $ 303
Due after one through five years 6,861 7,686
Due after five through ten years 57,770 61,043
Due after ten years 82,842 85,305
Total investment securities - held to maturity, Amortized Cost 147,574 154,337
Held to maturity, Estimated Fair Value    
Due in one year or less 100 300
Due after one through five years 6,557 7,365
Due after five through ten years 51,267 54,686
Due after ten years 68,927 73,190
Total investment securities - held to maturity, Estimated Fair Value $ 126,851 $ 135,541