v3.25.2
Disclosures about Fair Value of Assets - Fair Value Measurements of Assets Recognized on Recurring Basis (Detail) - USD ($)
$ in Thousands
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Available-for-sale securities:      
Available-for-sale securities, Fair Value $ 187,753 $ 190,475  
Mortgage servicing rights 1,429 1,491 $ 1,482
U.S. Treasury [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value   444  
US Government and federal agency [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value 1,812 6,609  
Mortgage-backed securities – GSE residential [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value 171,079 166,236  
Small Business Administration [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value 13,114 14,086  
State and political subdivisions [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value 1,748 3,100  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Treasury [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value   444  
Significant Other Observable Inputs (Level 2) [Member]      
Available-for-sale securities:      
Mortgage servicing rights 0 0  
Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value   0  
Significant Other Observable Inputs (Level 2) [Member] | US Government and federal agency [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value 1,812 6,609  
Significant Other Observable Inputs (Level 2) [Member] | Mortgage-backed securities – GSE residential [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value 171,079 166,236  
Significant Other Observable Inputs (Level 2) [Member] | Small Business Administration [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value 13,114 14,086  
Significant Other Observable Inputs (Level 2) [Member] | State and political subdivisions [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value 0 1,043  
Significant Unobservable Inputs (Level 3) [Member]      
Available-for-sale securities:      
Mortgage servicing rights 1,429 1,491  
Significant Unobservable Inputs (Level 3) [Member] | State and political subdivisions [Member]      
Available-for-sale securities:      
Available-for-sale securities, Fair Value $ 1,748 $ 2,057