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Disclosures about Fair Value of Assets - Fair Value Measurement of Assets Recognized on Nonrecurring Basis (Detail) - Non-recurring [Member] - USD ($) $ in Thousands | Jun. 30, 2021 | Jun. 30, 2019
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Foreclosed assets | $ 191 | $ 200
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Foreclosed assets | 0 |
Significant Other Observable Inputs (Level 2) [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Foreclosed assets | 0 |
Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Foreclosed assets | $ 191 | $ 200

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