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Securities - Amortized Cost and Fair Value of Available-for-Sale Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Debt Securities, Available-for-sale [Line Items]
Within one year, Amortized Cost
One to five years, Amortized Cost	6,027
Five to ten years, Amortized Cost	6,765
After ten years, Amortized Cost	7,841
Amortized Cost	20,633
Amortized Cost	197,699	$ 186,589
Within one year, Fair Value
One to five years, Fair Value	6,407
Five to ten years, Fair Value	6,883
After ten years, Fair Value	7,757
Fair Value	21,047
Fair Value	199,809	189,891
Mortgage-backed Securities - GSE Residential [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	177,066	167,711
Fair Value	$ 178,762	$ 170,415

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- Definition

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

+ References

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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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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