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Loans and Allowance for Loan Losses - Association's Loan Portfolio Aging Analysis (Detail) - USD ($) $ in Thousands | Jun. 30, 2022 | Jun. 30, 2021
--- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | $ 1,791 | $ 680
Current | 523,945 | 519,846
Total loans | 525,736 | 520,526
Total Loans 90 Days Past Due & Accruing | 47 | 118
Commercial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due |  | 86
Current | 167,375 | 155,798
Total loans | 167,375 | 155,884
Commercial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due |  | 9
Current | 80,418 | 103,079
Total loans | 80,418 | 103,088
Consumer [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 99 | 6
Current | 8,882 | 7,647
Total loans | 8,981 | 7,653
One- to four-family [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 1,692 | 524
Current | 130,782 | 116,911
Total loans | 132,474 | 117,435
Total Loans 90 Days Past Due & Accruing | 47 | 118
Multi-family [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Current | 88,247 | 104,433
Total loans | 88,247 | 104,433
Home equity lines of credit [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due |  | 55
Current | 6,987 | 6,633
Total loans | 6,987 | 6,688
Construction [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Current | 41,254 | 25,345
Total loans | 41,254 | 25,345
Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 452 | 476
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due |  | 86
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due |  | 9
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 78 | 6
Financing Receivables, 30 to 59 Days Past Due [Member] | One- to four-family [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 374 | 320
Financing Receivables, 30 to 59 Days Past Due [Member] | Home equity lines of credit [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due |  | 55
Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 165 | 52
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 21 |
Financing Receivables, 60 to 89 Days Past Due [Member] | One- to four-family [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 144 | 52
Financing Receivables, 90 Days or Greater [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 1,174 | 152
Financing Receivables, 90 Days or Greater [Member] | One- to four-family [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | $ 1,174 | $ 152

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