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Investment Securities - Schedule of amortized cost and estimated fair value of Available for sale securities (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Jun. 30, 2022
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Available for sale |  |  |
Amortized Cost | $ 2,295 |  | $ 2,681
Gross Unrealized Gains | 0 |  | 10
Gross Unrealized (Losses) | (44) |  | (15)
Estimated Fair Value | 2,251 |  | 2,676
U.S. government agency MBS |  |  |
Available for sale |  |  |
Amortized Cost | 1,463 |  | 1,698
Gross Unrealized Gains | 0 |  | 6
Gross Unrealized (Losses) | (23) |  | (6)
Estimated Fair Value | 1,440 |  | 1,698
U.S. government sponsored enterprise MBS |  |  |
Available for sale |  |  |
Amortized Cost | 725 |  | 865
Gross Unrealized Gains | 0 |  | 4
Gross Unrealized (Losses) | (12) |  | (4)
Estimated Fair Value | 713 |  | 865
Private issue CMO |  |  |
Available for sale |  |  |
Amortized Cost | 107 | [1] | 118
Gross Unrealized Gains | 0 | [1] | 0
Gross Unrealized (Losses) | (9) | [1] | (5)
Estimated Fair Value | $ 98 | [1] | $ 113
[1] | Collateralized Mortgage Obligations (“CMO”).

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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 https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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- Definition Amount, before tax, of unrealized loss 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 (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of 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 -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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- Definition Amount excluding accrued interest, of 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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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