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Investment Securities - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Jun. 30, 2022
Debt Securities, Available-for-sale [Line Items]          
Unrealized Holding Losses Total, Unrealized Losses $ 17,511   $ 17,511   $ 14,110
Unrealized Holding Losses 12 Months or More, Unrealized Losses 17,287   17,287   4,927
Unrealized holding losses, 12 months or more 17,287   17,287   4,927
U.S. government sponsored enterprise CMO          
Debt Securities, Available-for-sale [Line Items]          
Payments to acquire Mortgage Backed Securities (MBS) categorized as Held-to-maturity   $ 3,000   $ 3,000  
Unrealized Holding Losses 12 Months or More, Unrealized Losses 278   278    
Unrealized holding losses, 12 months or more 278   278    
U.S. government sponsored enterprise MBS          
Debt Securities, Available-for-sale [Line Items]          
Principal payments from investment securities 6,900 12,300 23,800 44,800  
Proceeds from sale of investment securities available for sale 0 $ 0 0 0  
Payments to acquire Mortgage Backed Securities (MBS) categorized as Held-to-maturity       $ 15,200  
Unrealized Holding Losses 12 Months or More, Unrealized Losses 17,009   17,009   4,927
Unrealized holding losses, 12 months or more $ 17,009   $ 17,009   $ 4,927