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Investment Securities - Investments with Unrealized Loss Positions for Available for sale (Details)
$ in Thousands
Sep. 30, 2023
USD ($)
Jun. 30, 2023
USD ($)
Schedule of Available-for-sale Securities [Line Items]    
Unrealized Holding Losses, Less Than 12 Months, Fair Value 62 783
Unrealized Holding Losses, Less Than 12 Months, Unrealized Losses $ 1 $ 22
Unrealized Holding Losses, 12 Months or More, Fair Value 1,996 1,333
Unrealized Holding Losses, 12 Months or More, Unrealized Losses 51 40
Unrealized Holding Losses Total, Fair Value 2,058 2,116
Unrealized Holding Losses Total, Unrealized Losses 52 62
Private Issue CMO    
Schedule of Available-for-sale Securities [Line Items]    
Unrealized Holding Losses, 12 Months or More, Fair Value   102
Unrealized Holding Losses, 12 Months or More, Unrealized Losses   1
Unrealized Holding Losses Total, Fair Value   102
Unrealized Holding Losses Total, Unrealized Losses   $ 1
U.S. government agency MBS    
Schedule of Available-for-sale Securities [Line Items]    
Unrealized Holding Losses, Less Than 12 Months, Fair Value   696
Unrealized Holding Losses, Less Than 12 Months, Unrealized Losses   $ 20
Unrealized Holding Losses, 12 Months or More, Fair Value 1,340 673
Unrealized Holding Losses, 12 Months or More, Unrealized Losses 39 27
Unrealized Holding Losses Total, Fair Value 1,340 1,369
Unrealized Holding Losses Total, Unrealized Losses $ 39 $ 47
U.S. government sponsored enterprise MBS    
Schedule of Available-for-sale Securities [Line Items]    
Unrealized Holding Losses, Less Than 12 Months, Fair Value 62 87
Unrealized Holding Losses, Less Than 12 Months, Unrealized Losses $ 1 $ 2
Unrealized Holding Losses, 12 Months or More, Fair Value 558 558
Unrealized Holding Losses, 12 Months or More, Unrealized Losses 9 12
Unrealized Holding Losses Total, Fair Value 620 645
Unrealized Holding Losses Total, Unrealized Losses 10 $ 14
Private issue CMO    
Schedule of Available-for-sale Securities [Line Items]    
Unrealized Holding Losses, 12 Months or More, Fair Value 98  
Unrealized Holding Losses, 12 Months or More, Unrealized Losses 3  
Unrealized Holding Losses Total, Fair Value 98  
Unrealized Holding Losses Total, Unrealized Losses $ 3