v3.26.1
Goodwill and Intangible Assets - Additional Information (Details) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Oct. 29, 2025
Dec. 31, 2025
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Sep. 30, 2024
Finite Lived Intangible Assets [Line Items]              
Goodwill, net   $ 203,391,000     $ 203,604,000    
Principal balance of mortgage loans serviced for others   509,700,000     $ 483,000,000 $ 541,900,000  
Weighted average amortization period of intangibles         4 years 10 days    
Core Deposit Intangibles              
Finite Lived Intangible Assets [Line Items]              
Intangible assets amortization period         10 years    
Weighted average amortization period of intangibles         3 years 4 months 24 days    
Customer List Intangibles              
Finite Lived Intangible Assets [Line Items]              
Weighted average amortization period of intangibles         5 years 3 months    
Minimum | Customer List Intangibles              
Finite Lived Intangible Assets [Line Items]              
Intangible assets amortization period         3 years    
Maximum | Customer List Intangibles              
Finite Lived Intangible Assets [Line Items]              
Intangible assets amortization period         16 years    
Downs Insurance Agency, Inc. | Customer List Intangibles              
Finite Lived Intangible Assets [Line Items]              
Intangible assets acquired     $ 1,400,000        
AAdvantage Insurance Group LLC's | Customer List Intangibles              
Finite Lived Intangible Assets [Line Items]              
Intangible assets acquired       $ 2,800,000      
Ray Farm Management Services, Inc's | Customer List Intangibles              
Finite Lived Intangible Assets [Line Items]              
Intangible assets acquired   $ 764,000          
Mid Rivers Insurance Group, Inc.              
Finite Lived Intangible Assets [Line Items]              
Goodwill, net             $ 6,930,000
Two Rivers Financial Group, Inc              
Finite Lived Intangible Assets [Line Items]              
Goodwill, net         $ 213,000    
Goodwill acquired during period $ 213,000       $ 213,000    
Two Rivers Financial Group, Inc | Core Deposit Intangibles              
Finite Lived Intangible Assets [Line Items]              
Intangible assets amortization period 10 years            
Two Rivers Financial Group, Inc | Customer List Intangibles              
Finite Lived Intangible Assets [Line Items]              
Intangible assets amortization period 16 years