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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 | Sep. 30, 2021 | Jun. 30, 2021
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 197,699 | $ 186,589
Gross Unrealized Gains | 4,110 | 4,639
Gross Unrealized Losses | (2,000) | (1,337)
Fair Value | 199,809 | 189,891
US Treasury [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 991 | 990
Gross Unrealized Gains | 4 | 6
Fair Value | 995 | 996
U.S. Government and Federal Agency [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 7,519 | 7,522
Gross Unrealized Gains | 472 | 517
Fair Value | 7,991 | 8,039
Mortgage-backed Securities - GSE Residential [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 177,066 | 167,711
Gross Unrealized Gains | 3,549 | 4,011
Gross Unrealized Losses | (1,853) | (1,307)
Fair Value | 178,762 | 170,415
Small Business Administration [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 10,872 | 9,115
Gross Unrealized Gains | 85 | 105
Gross Unrealized Losses | (147) | (30)
Fair Value | 10,810 | 9,190
State and Political Subdivisions [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 1,251 | 1,251
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses |  |
Fair Value | $ 1,251 | $ 1,251

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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as 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 This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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