v3.25.2
Loans - Additional Information (Detail)
 12 Months Ended
Jun. 30, 2025
USD ($)
No
Jun. 30, 2024
USD ($)
No
Jul. 01, 2023
USD ($)
Financing Receivable, Impaired [Line Items]      
Financing receivable, Past due $ 179,123,000 $ 172,378,000  
Retained earnings 49,961,000 50,226,000 $ 223,000
Deferred tax liabilities     $ 88,000
Loans due from directors and other related parties 1,900,000 2,000,000  
Financing Receivable, Modified in Period, Amount $ 0 $ 0  
Defaulted modified loans | No 0 0  
Charge-offs $ 0 $ 0  
Pass [Member]      
Financing Receivable, Impaired [Line Items]      
Financing receivable, Past due 177,409,000 170,601,000  
Financing receivable, Nonaccrual 0 0  
Loans Receivable [Member]      
Financing Receivable, Impaired [Line Items]      
Financing receivable, Ninety days or more past due, Still accruing 0 0  
Impaired financing receivable 4 4  
Loans Receivable [Member] | Doubtful [Member]      
Financing Receivable, Impaired [Line Items]      
Financing receivable after allowance for credit loss 0 0  
Loans Receivable [Member] | Financial Asset, Past Due [Member]      
Financing Receivable, Impaired [Line Items]      
Financing receivable, Past due $ 0 $ 0