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Loans and Allowance for Credit Losses - Association's Loan Portfolio Aging Analysis (Detail) - USD ($) $ in Thousands | Jun. 30, 2023 | Jun. 30, 2022
--- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | $ 981 | $ 1,791
Current | 593,343 | 523,945
Total loans | 594,324 | 525,736
Total Loans 90 Days Past Due & Accruing |  | 47
Commercial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 153 |
Current | 193,554 | 167,375
Total loans | 193,707 | 167,375
Commercial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 114 |
Current | 79,579 | 80,418
Total loans | 79,693 | 80,418
Consumer [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 55 | 99
Current | 8,327 | 8,882
Total loans | 8,382 | 8,981
One- to four-family [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 639 | 1,692
Current | 163,215 | 130,782
Total loans | 163,854 | 132,474
Total Loans 90 Days Past Due & Accruing |  | 47
Multi-family [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Current | 89,649 | 88,247
Total loans | 89,649 | 88,247
Home equity lines of credit [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 20 |
Current | 8,046 | 6,987
Total loans | 8,066 | 6,987
Construction [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Current | 50,973 | 41,254
Total loans | 50,973 | 41,254
Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 779 | 452
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 153 |
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 56 |
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 47 | 78
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 | 523 | 374
Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 142 | 165
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 6 | 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 | 116 | 144
Financing Receivables, 60 to 89 Days Past Due [Member] | Home equity lines of credit [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 20 |
Financing Receivables, 90 Days or Greater [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 60 | 1,174
Financing Receivables, 90 Days or Greater [Member] | Commercial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | 58 |
Financing Receivables, 90 Days or Greater [Member] | Consumer [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total Past Due | $ 2 |
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

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