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Loans and Allowance for Loan Losses - Credit Risk Profile of Association's Loan Portfolio Based on Rating Category and Payment Activity (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 505,712	$ 520,526	$ 511,318
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	495,531	512,746
Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,913	6,919
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,268	861
One- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	124,590	117,435	116,363
One- to four-family [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	123,049	116,980
One- to four-family [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,123
One- to four-family [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	418	455
Multi-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	88,566	104,433	105,895
Multi-family [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	88,310	104,170
Multi-family [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	256	263
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,600	6,688	7,814
Home equity lines of credit [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,600	6,688
Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	31,127	25,345	20,783
Construction [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	31,127	25,345
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	165,132	155,884	149,639
Commercial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	162,168	154,833
Commercial [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	919	954
Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,045	97
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	81,399	103,088	103,326
Commercial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	75,993	97,078
Commercial [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	871	5,964
Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,535	46
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,298	7,653	$ 7,498
Consumer [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,284	7,652
Consumer [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		$ 1
Consumer [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 14

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

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