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Securities - Amortized Cost and Approximate Fair Value of Securities, Together with Gross Unrealized Gains and Losses of Securities (Detail) - USD ($) $ in Thousands | Mar. 31, 2022 | Jun. 30, 2021
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Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 231,125 | $ 186,589
Gross Unrealized Gains | 345 | 4,639
Gross Unrealized Losses | (12,831) | (1,337)
Fair Value | 218,639 | 189,891
US Treasury [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 8,804 | 990
Gross Unrealized Gains | 1 | 6
Gross Unrealized Losses | (117) |
Fair Value | 8,688 | 996
U.S. Government and Federal Agency and Government sponsored enterprises (GSE's) [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 9,489 | 7,522
Gross Unrealized Gains | 48 | 517
Gross Unrealized Losses | (142) |
Fair Value | 9,395 | 8,039
Mortgage-backed Securities - GSE Residential [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 196,180 | 167,711
Gross Unrealized Gains | 296 | 4,011
Gross Unrealized Losses | (11,725) | (1,307)
Fair Value | 184,751 | 170,415
Small Business Administration [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 15,542 | 9,115
Gross Unrealized Gains | 0 | 105
Gross Unrealized Losses | (847) | (30)
Fair Value | 14,695 | 9,190
State and Political Subdivisions [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 1,110 | 1,251
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses |  | (30)
Fair Value | $ 1,110 | $ 1,251

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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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- 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 http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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- Definition Amount 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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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