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Securities - Amortized Cost and Fair Value of Available-for-Sale Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands | Sep. 30, 2022 | Jun. 30, 2022
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Debt Securities, Available-for-sale [Line Items] |  |
Within one year, Amortized Cost | $ 2,001 |
One to five years, Amortized Cost | 9,077 |
Five to ten years, Amortized Cost | 10,547 |
After ten years, Amortized Cost | 12,475 |
Amortized Cost | 34,100 |
Amortized Cost | 238,721 | $ 245,052
Within one year, Fair Value | 1,975 |
One to five years, Fair Value | 8,683 |
Five to ten years, Fair Value | 9,639 |
After ten years, Fair Value | 10,895 |
Fair Value | 31,192 |
Fair Value | 206,619 | 220,906
Mortgage-backed Securities - GSE Residential [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 204,621 | 210,367
Fair Value | $ 175,427 | $ 188,185

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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27198-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3A -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126980459&loc=SL120269850-112803 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27198-111563 + Details
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