v3.26.1
Income Taxes - Reconciliation of income tax expense at statutory rate (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Reconciliation of income tax expense at the statutory rate in amount      
U.S. Federal statutory tax rate $ 18,292 $ 15,539 $ 13,253
State and local income taxes, net of federal income tax effect 431 653 412
Nontaxable municipal income (564) (332) (471)
Cash surrender value of Bank-owned life insurance (540) (438) (401)
Tax credit benefits (2,447) (710) (12)
Other, net 93 704 147
Total income tax provision $ 15,265 $ 15,416 $ 12,928
Tax Jurisdiction of Domicile [Extensible Enumeration] country:US    
Reconciliation of income tax expense at the statutory rate at percent      
U.S. Federal statutory tax rate (in percent) 21.00% 21.00% 21.00%
State and local income taxes, net of federal income tax effect (in percent) 0.50%    
Nontaxable municipal income (in percent) (0.60%)    
Cash surrender value of Bank-owned life insurance (in percent) (0.60%)    
Tax credit benefits (in percent) (2.80%)    
Other, net (in percent) 0.10%    
Actual provision (in percent) 17.50%    
Effective Income Tax Rate Reconciliation, State and Local Jurisdiction, Contribution Greater than 50 Percent, Tax Effect [Extensible Enumeration] stpr:MO