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Loans and Allowance for Loan Losses - Categories of Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Jun. 30, 2019
Real estate loans
Total loans	$ 525,033	$ 515,887	$ 496,903
Unearned fees and discounts, net	286	(164)
Allowance for loan losses	6,506	6,234	6,277	$ 6,328
Loans, net	518,241	509,817
One- to four-family [Member]
Real estate loans
Total loans	125,574	128,876	126,152
Allowance for loan losses	1,033	1,044	990	1,031
Multi-family [Member]
Real estate loans
Total loans	106,886	96,195	105,548
Allowance for loan losses	1,741	1,514	1,602	1,642
Home equity lines of credit [Member]
Real estate loans
Total loans	8,147	8,551	8,897
Allowance for loan losses	82	87	90	89
Construction [Member]
Real estate loans
Total loans	10,050	22,042	17,267
Allowance for loan losses	85	240	204	213
Commercial [Member]
Real estate loans
Total loans	157,096	145,113	146,500
Allowance for loan losses	1,874	1,706	1,657	1,623
Commercial [Member]
Real estate loans
Total loans	109,182	107,581	84,825
Allowance for loan losses	1,624	1,583	1,664	1,659
Consumer [Member]
Real estate loans
Total loans	8,098	7,529	7,714
Allowance for loan losses	$ 67	$ 60	$ 70	$ 71

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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