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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 | Jun. 30, 2022 | Jun. 30, 2021
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Debt Securities, Available-for-sale [Line Items] |  |
Total AFS securities, Amortized Cost | $ 257,760 | $ 203,286
Gross Unrealized Gains | 109 | 4,875
Gross Unrealized Losses | (22,475) | (1,141)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 235,394 | 207,020
US States and Political Subdivisions Debt Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total AFS securities, Amortized Cost | 47,383 | 46,257
Gross Unrealized Gains | 77 | 1,479
Gross Unrealized Losses | (2,981) | (40)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 44,479 | 47,696
Corporate Obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total AFS securities, Amortized Cost | 20,818 | 20,356
Gross Unrealized Gains | 32 | 290
Gross Unrealized Losses | (963) | (335)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 19,887 | 20,311
Other Debt Obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total AFS securities, Amortized Cost | 486 | 647
Gross Unrealized Gains |  | 25
Gross Unrealized Losses | (43) |
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 443 | 672
Debt and Equity Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total AFS securities, Amortized Cost | 68,687 | 67,260
Gross Unrealized Gains | 109 | 1,794
Gross Unrealized Losses | (3,987) | (375)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 64,809 | 68,679
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total AFS securities, Amortized Cost | 76,345 | 64,400
Gross Unrealized Gains |  | 932
Gross Unrealized Losses | (7,177) | (379)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 69,168 | 64,953
Commercial MBS issued by GSEs |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total AFS securities, Amortized Cost | 51,435 | 35,425
Gross Unrealized Gains |  | 1,394
Gross Unrealized Losses | (5,705) | (338)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 45,730 | 36,481
CMOs issued by GSEs |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total AFS securities, Amortized Cost | 61,293 | 36,201
Gross Unrealized Gains |  | 755
Gross Unrealized Losses | (5,606) | (49)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 55,687 | 36,907
Total MBS and CMOs |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total AFS securities, Amortized Cost | 189,073 | 136,026
Gross Unrealized Gains |  | 3,081
Gross Unrealized Losses | (18,488) | (766)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | $ 170,585 | $ 138,341

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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