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Securities - Amortized Cost and Approximate Fair Value of Securities, Together with Gross Unrealized Gains and Losses of Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 215,050	$ 219,523
Gross Unrealized Gains	65	41
Gross Unrealized Losses	(22,464)	(29,089)
Fair Value	192,651	190,475
U.S. Treasury [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		497
Gross Unrealized Gains		0
Gross Unrealized Losses		(53)
Fair Value		444
U.S. Government and Federal Agency [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,983	6,979
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(220)	(370)
Fair Value	5,763	6,609
Mortgage-backed: GSE residential [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	190,071	192,556
Gross Unrealized Gains	62	41
Gross Unrealized Losses	(20,495)	(26,361)
Fair Value	169,638	166,236
Small Business Administration [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	15,898	16,387
Gross Unrealized Gains	3	0
Gross Unrealized Losses	(1,749)	(2,301)
Fair Value	14,152	14,086
State and political subdivisions [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,098	3,104
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	(4)
Fair Value	$ 3,098	$ 3,100

X

- Definition

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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