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Available for Sale Securities - Amortized cost, gross unrealized gains, gross unrealized losses, ACL, and approximate fair value of securities available for sale (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025
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Debt Securities, Available-for-Sale [Line Items] |  |
Total AFS securities, Amortized Cost | $ 464,548 | $ 475,395
Gross Unrealized Gains | 4,093 | 3,128
Gross Unrealized Losses | (14,786) | (17,679)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 453,855 | 460,844
Obligations of states and political subdivisions |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Total AFS securities, Amortized Cost | 25,998 | 26,030
Gross Unrealized Gains | 49 | 5
Gross Unrealized Losses | (1,163) | (1,772)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 24,884 | 24,263
Corporate obligations |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Total AFS securities, Amortized Cost | 29,734 | 31,199
Gross Unrealized Gains | 52 | 75
Gross Unrealized Losses | (421) | (632)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 29,365 | 30,642
Asset backed securities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Total AFS securities, Amortized Cost | 38,365 | 42,059
Gross Unrealized Gains | 540 | 567
Gross Unrealized Losses | (144) | (145)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 38,761 | 42,481
Other securities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Total AFS securities, Amortized Cost | 3,739 | 4,007
Gross Unrealized Gains | 10 | 10
Gross Unrealized Losses | (54) | (53)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 3,695 | 3,964
Debt securities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Total AFS securities, Amortized Cost | 97,836 | 103,295
Gross Unrealized Gains | 651 | 657
Gross Unrealized Losses | (1,782) | (2,602)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 96,705 | 101,350
Residential MBS issued by governmental sponsored enterprises (GSEs) |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Total AFS securities, Amortized Cost | 139,440 | 138,377
Gross Unrealized Gains | 2,181 | 1,623
Gross Unrealized Losses | (4,225) | (5,005)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 137,396 | 134,995
Commercial MBS issued by GSEs |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Total AFS securities, Amortized Cost | 95,348 | 96,377
Gross Unrealized Gains | 660 | 446
Gross Unrealized Losses | (4,258) | (4,821)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 91,750 | 92,002
CMOs issued by GSEs |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Total AFS securities, Amortized Cost | 131,924 | 137,346
Gross Unrealized Gains | 601 | 402
Gross Unrealized Losses | (4,521) | (5,251)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 128,004 | 132,497
MBS and CMOs |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Total AFS securities, Amortized Cost | 366,712 | 372,100
Gross Unrealized Gains | 3,442 | 2,471
Gross Unrealized Losses | (13,004) | (15,077)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | $ 357,150 | $ 359,494

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
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