v3.26.1
Summary of Significant Accounting Policies (Details)
12 Months Ended
Jul. 22, 2026
$ / shares
Jun. 30, 2026
USD ($)
segment
subsidiary
$ / shares
Jun. 30, 2025
USD ($)
$ / shares
Jun. 30, 2024
USD ($)
$ / shares
Jun. 30, 2023
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Number of wholly owned bank subsidiaries | subsidiary   3      
Dividends declared per common share (in dollars per share) | $ / shares   $ 0.44 $ 0.44 $ 0.44  
Accrued interest receivable on available for sale securities   $ 5,500,000 $ 6,600,000    
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]   Interest receivable Interest receivable    
Accrued interest receivable on held to maturity securities   $ 317,000 $ 376,000    
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]   Interest receivable Interest receivable    
Accrued interest receivable on loans   $ 22,000,000.0 $ 21,100,000    
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]   Interest receivable Interest receivable    
Goodwill impairment   $ 0 $ 0 $ 97,370,000  
Finite-lived intangible assets, net   968,000 1,436,000 $ 1,931,000 $ 2,457,000
Unrecognized income tax benefits   $ 0 $ 0    
Number of reportable segments | segment   1      
Number of operating segments | segment   1      
Subsequent Event          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Dividends declared per common share (in dollars per share) | $ / shares $ 0.11