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Disclosures about Fair Value of Assets - Estimated Fair Values of Financial Instruments and Level within Fair Value Hierarchy in which Fair Value Measurements Fall (Detail) - USD ($) $ in Thousands | Sep. 30, 2021 | Jun. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2020
--- | --- | --- | --- | ---
Financial assets |  |  |  |
Cash and cash equivalents | $ 28,911 | $ 62,735 | $ 15,696 | $ 33,467
Interest-bearing time deposits in banks | 2,250 | 2,250 |  |
Loans, net of allowance for loan losses | 506,283 | 513,371 |  |
Federal Home Loan Bank stock | 4,198 | 4,198 |  |
Accrued interest receivable | 2,002 | 1,897 |  |
Financial liabilities |  |  |  |
Deposits | 637,328 | 667,632 |  |
Repurchase agreements | 6,703 | 6,245 |  |
Federal Home Loan Bank advances | 25,000 | 25,000 |  |
Advances from borrowers for taxes and insurance | 776 | 928 |  |
Accrued interest payable | 187 | 199 |  |
Unrecognized financial instruments (net of contract amount) |  |  |  |
Commitments to originate loans | 0 | 0 |  |
Lines of credit | 3,000 | 3,000 |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |
Financial assets |  |  |  |
Cash and cash equivalents | 28,911 | 62,735 |  |
Interest-bearing time deposits in banks | 2,250 | 2,250 |  |
Unrecognized financial instruments (net of contract amount) |  |  |  |
Commitments to originate loans | 0 | 0 |  |
Significant Other Observable Inputs (Level 2) [Member] |  |  |  |
Financial assets |  |  |  |
Federal Home Loan Bank stock | 4,198 | 4,198 |  |
Accrued interest receivable | 2,002 | 1,897 |  |
Financial liabilities |  |  |  |
Deposits | 375,646 | 405,664 |  |
Repurchase agreements | 6,703 | 6,245 |  |
Federal Home Loan Bank advances | 25,604 | 25,673 |  |
Advances from borrowers for taxes and insurance | 776 | 928 |  |
Accrued interest payable | 187 | 199 |  |
Unrecognized financial instruments (net of contract amount) |  |  |  |
Commitments to originate loans | 0 | 0 |  |
Lines of credit | 3,000 | 3,000 |  |
Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Financial assets |  |  |  |
Loans, net of allowance for loan losses | 507,145 | 515,515 |  |
Financial liabilities |  |  |  |
Deposits | 262,141 | 262,603 |  |
Unrecognized financial instruments (net of contract amount) |  |  |  |
Commitments to originate loans | $ 0 | $ 0 |  |

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- Definition Interest-bearing time deposits in banks. + References No definition available. + Details
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- Definition Carrying amount of accumulated prepayments received by financial institutions from borrowers for taxes (for example, property taxes) and insurance (for example, property and catastrophe) which will periodically be remitted to the appropriate governmental agency or vendor on behalf of the borrower. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Definition Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3044-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Fair value portion of arrangements with third parties, including, but not limited to, operating lease arrangement and arrangement in which the entity has agreed to expend funds to procure goods or services, or has agreed to commit resources to supply goods or services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(25)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 325 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123599499&loc=d3e63345-112809 + Details
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- Definition Fair value of the amount outstanding under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 + Details
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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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