Securities - Amortized Cost and Approximate Fair Value of Securities, Together with Gross Unrealized Gains and Losses of Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 238,721	$ 245,052
Gross Unrealized Gains	0	54
Gross Unrealized Losses	(32,102)	(24,200)
Fair Value	206,619	220,906
U.S. Treasury [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,485	3,483
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(121)	(83)
Fair Value	3,364	3,400
U.S. Government and Federal Agency [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,487	9,488
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(633)	(367)
Fair Value	8,854	9,121
Mortgage-backed: GSE Residential [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	204,621	210,367
Gross Unrealized Gains	0	47
Gross Unrealized Losses	(29,194)	(22,229)
Fair Value	175,427	188,185
Small Business Administration [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	17,379	17,960
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(2,146)	(1,521)
Fair Value	15,233	16,442
State and Political Subdivisions [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,749	3,754
Gross Unrealized Gains	0	4
Gross Unrealized Losses	(8)	0
Fair Value	$ 3,741	$ 3,758

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) 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, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) 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 investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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