Loans and Allowance for Credit Losses - Categories of Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2023	Jun. 30, 2023
Real estate loans
Total loans	$ 654,189	$ 646,389	$ 621,771
Unearned fees and discounts, net	(347)	(407)
Allowance for credit losses	7,472	7,499	7,450	$ 7,139
Loans, net	647,064	639,297
One- to four-family [Member]
Real estate loans
Total loans	176,334	177,263	170,154
Allowance for credit losses	1,628	1,774	1,906	1,898
Multi-family [Member]
Real estate loans
Total loans	125,906	126,031	89,177
Allowance for credit losses	1,762	1,764	1,115	1,121
Home equity lines of credit [Member]
Real estate loans
Total loans	9,927	9,859	8,511
Allowance for credit losses	147	148	134	121
Construction [Member]
Real estate loans
Total loans	30,839	33,708	72,810
Allowance for credit losses	278	337	1,165	765
Commercial [Member]
Real estate loans
Total loans	205,103	200,017	193,582
Allowance for credit losses	2,362	2,358	2,265	2,369
Commercial [Member]
Real estate loans
Total loans	98,894	91,784	79,194
Allowance for credit losses	1,236	1,053	788	794
Consumer [Member]
Real estate loans
Total loans	7,186	7,727	8,343
Allowance for credit losses	$ 59	$ 65	$ 77	$ 71

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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