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Loans and Allowance for Credit Losses - Categories of Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2021	Jun. 30, 2021
Real estate loans
Total loans	$ 550,905	$ 525,736	$ 512,984
Unearned fees and discounts, net	(225)	(247)
Allowance for credit losses	7,023	7,052	6,470	$ 6,599
Loans, net	544,107	518,931
One- to four-family [Member]
Real estate loans
Total loans	142,417	132,474	117,854
Allowance for credit losses	1,537	1,028	974	967
Multi-family [Member]
Real estate loans
Total loans	98,778	88,247	97,211
Allowance for credit losses	1,284	1,375	1,562	1,674
Home equity lines of credit [Member]
Real estate loans
Total loans	6,778	6,987	6,274
Allowance for credit losses	94	70	63	67
Construction [Member]
Real estate loans
Total loans	34,314	41,254	31,209
Allowance for credit losses	549	489	321	258
Commercial [Member]
Real estate loans
Total loans	181,934	167,375	163,859
Allowance for credit losses	2,386	1,985	1,916	1,831
Commercial [Member]
Real estate loans
Total loans	77,103	80,418	88,962
Allowance for credit losses	1,090	2,025	1,571	1,740
Consumer [Member]
Real estate loans
Total loans	9,581	8,981	7,615
Allowance for credit losses	$ 83	$ 80	$ 63	$ 62

X

- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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