Securities - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities with a book value	$ 228,647		$ 231,672
Fair Value	$ 191,112		201,299
Percentage of equity securities	10.00%
Repurchase agreements	$ 16,038		10,787
Gross gains from sales of available for sale securities	0	$ 0
Gross losses from sales of available for sale securities	0	$ 0
Investments in debt and marketable equity securities	$ 188,750		$ 194,818
Temporarily impaired debt securities percentage of investment securities portfolio	99.00%		97.00%
Asset Pledged as Collateral with Right [Member]
Debt Securities, Available-for-sale [Line Items]
Carrying value of securities pledged as collateral	$ 94,334		$ 138,022
Maturity Overnight [Member]
Debt Securities, Available-for-sale [Line Items]
Repurchase agreements	16,000
U.S. Government and federal agency securities [Member]
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities with a book value	6,977		6,976
Fair Value	6,427		6,477
Investments in debt and marketable equity securities	6,427		6,477
Mortgage-backed securities – GSE residential [Member]
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities with a book value	200,573		203,139
Fair Value	166,578		175,726
Investments in debt and marketable equity securities	166,578		172,930
Small Business Administration [Member]
Debt Securities, Available-for-sale [Line Items]
Mortgage-backed securities with a book value	17,174		17,629
Fair Value	14,268		15,233
Investments in debt and marketable equity securities	14,268		13,910
Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Investments in debt and marketable equity securities	$ 188,750		$ 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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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 realized 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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Carrying value, as of the balance sheet date, of securities sold under agreements to repurchase where the transferor maintains effective control over the assets, accounting for them as secured debt.

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