Securities - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024
Debt Securities, Available-for-sale [Line Items]
Accrued interest receivable	$ 510
Mortgage-backed securities with a book value	215,050		$ 219,523
Fair Value	$ 192,651		190,475
Percentage of equity securities	10.00%
Repurchase agreements	$ 17,913		17,772
Gross gains from sales of available for sale securities	30	$ 0
Gross losses from sales of available for sale securities	101	0
Tax benefit to net realized gains (losses)	(20)	0
Investments in debt and marketable equity securities	$ 181,210		$ 185,652
Temporarily impaired debt securities percentage of investment securities portfolio	94.00%		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	$ 87,969		$ 118,577
Tax benefit to net realized gains (losses)	20	$ 0
Maturity Overnight [Member]
Debt Securities, Available-for-sale [Line Items]
Repurchase agreements	17,900
Mortgage-backed securities – GSE residential [Member]
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities with a book value	190,071		192,556
Fair Value	169,638		166,236
Investments in debt and marketable equity securities	162,563		163,470
Small Business Administration [Member]
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities with a book value	15,898		16,387
Fair Value	14,152		14,086
Investments in debt and marketable equity securities	12,884		14,086
Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Investments in debt and marketable equity securities	$ 181,210		$ 185,652

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 realized gain 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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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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