Securities - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2024	Jun. 30, 2023
Debt Securities, Available-for-sale [Line Items]
Accrued interest receivable	$ 509	$ 535
Mortgage-backed securities with a book value	219,523	231,672
Fair Value	$ 190,475	201,299
Percentage of equity securities	10.00%
Gross gains from sales of available for sale securities	$ 0	12
Gross losses from sales of available for sale securities	0	183
Tax benefit to net realized gains (losses)	0	49
Investments in debt and marketable equity securities	$ 185,652	$ 194,818
Temporarily impaired debt securities percentage of investment securities portfolio	97.00%	97.00%
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Interest Receivable	Interest Receivable
Asset Pledged as Collateral with Right [Member]
Debt Securities, Available-for-sale [Line Items]
Carrying value of securities pledged as collateral	$ 118,577	$ 138,022
Tax benefit to net realized gains (losses)	0	49
Mortgage-backed securities – GSE residential [Member]
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities with a book value	192,556	203,139
Fair Value	166,236	175,726
Investments in debt and marketable equity securities	163,470	172,930
Small Business Administration [Member]
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities with a book value	16,387	17,629
Fair Value	14,086	15,233
Investments in debt and marketable equity securities	14,086	13,910
Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Investments in debt and marketable equity securities	$ 185,652	$ 194,818

Debt securities greater than stated percentage of equity securities.

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Temporarily impaired debt securities percentage of investment securities portfolio.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Indicates line item in statement of financial position that includes accrued interest, after allowance for credit loss, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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