v3.26.3
Mergers and Acquisitions - Narrative (Details) - USD ($)
9 Months Ended 12 Months Ended
Jun. 29, 2026
Jan. 01, 2026
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Business Combination, Pro Forma Information [Line Items]          
Assets     $ 8,955,962,000   $ 8,214,740,000
Loans     6,721,292,000   6,135,531,000
Deposits     7,376,798,000   6,698,590,000
Business combination, acquisition related costs     6,900,000   3,800,000
Financing receivable, purchased with credit deterioration, amount at purchase price     8,000,000.0    
Financing receivable, purchased with credit deterioration, allowance for credit loss at acquisition date     6,900,000    
Financing receivable, purchased with credit deterioration, discount     750,000    
Adjustment for progressive on PCD loans     9,264,000    
Proceeds from issuance of subordinated debt     85,000,000 $ 0  
Goodwill     $ 131,743,000   121,146,000
Core Deposits          
Business Combination, Pro Forma Information [Line Items]          
Useful life     10 years    
Progressive Bancorp, Inc          
Business Combination, Pro Forma Information [Line Items]          
Assets         773,800,000
Loans         597,200,000
Deposits         $ 684,900,000
Progressive Bancorp, Inc          
Business Combination, Pro Forma Information [Line Items]          
Number of shares issued (in shares)   3,192,367      
Financing receivable, purchased with credit deterioration, amount at purchase price   $ 565,900,000      
Financing receivable, purchased with credit deterioration, discount   13,700,000      
Adjustment for progressive on PCD loans   2,400,000      
Business combination, consideration transferred   83,451,000      
Goodwill   $ 8,733,000      
American Planning Corporation          
Business Combination, Pro Forma Information [Line Items]          
Business combination, consideration transferred $ 6,800,000        
Business combination, paid in cash 2,600,000        
Proceeds from issuance of subordinated debt 4,300,000        
Goodwill 1,900,000        
American Planning Corporation | Customer Relationships          
Business Combination, Pro Forma Information [Line Items]          
Intangible asset $ 4,800,000        
Intangible asset, amortization period 10 years