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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	Mar. 31, 2022	Jun. 30, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 231,125	$ 186,589
Gross Unrealized Gains	345	4,639
Gross Unrealized Losses	(12,831)	(1,337)
Fair Value	218,639	189,891
US Treasury [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,804	990
Gross Unrealized Gains	1	6
Gross Unrealized Losses	(117)
Fair Value	8,688	996
U.S. Government and Federal Agency and Government sponsored enterprises (GSE's) [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,489	7,522
Gross Unrealized Gains	48	517
Gross Unrealized Losses	(142)
Fair Value	9,395	8,039
Mortgage-backed Securities - GSE Residential [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	196,180	167,711
Gross Unrealized Gains	296	4,011
Gross Unrealized Losses	(11,725)	(1,307)
Fair Value	184,751	170,415
Small Business Administration [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	15,542	9,115
Gross Unrealized Gains	0	105
Gross Unrealized Losses	(847)	(30)
Fair Value	14,695	9,190
State and Political Subdivisions [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,110	1,251
Gross Unrealized Gains	0	0
Gross Unrealized Losses		(30)
Fair Value	$ 1,110	$ 1,251

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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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