v3.26.3
MERGER - Narrative (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Jul. 01, 2024
USD ($)
$ / shares
shares
Sep. 30, 2026
USD ($)
$ / shares
Sep. 30, 2026
USD ($)
$ / shares
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
$ / shares
Jun. 30, 2026
USD ($)
Dec. 31, 2024
USD ($)
Jun. 28, 2024
$ / shares
Business Combination [Line Items]                
Common stock, stated value (in usd per share) | $ / shares   $ 0.05205 $ 0.05205   $ 0.05205      
Goodwill   $ 69,751,000 $ 69,751,000   $ 69,751,000   $ 68,106,000  
Adjustments to acquired goodwill     0   $ 1,645,000      
Subordinated notes | Codorus Valley Unsecured Subordinated Notes                
Business Combination [Line Items]                
Unamortized discount   2,400,000 2,400,000          
Fixed rate of interest         4.50% 4.50%    
Accelerated amortization of unearned discounts   $ 0 $ 1,600,000          
Codorus Valley                
Business Combination [Line Items]                
Consideration transferred $ 233,400,000              
Goodwill $ 49,400,000     $ 51,000,000.0        
Adjustments to acquired goodwill       $ 1,600,000        
Estimated useful life (in years) 40 years              
Operating lease assets acquired $ 5,100,000              
Operating lease liabilities acquired 5,100,000              
Finance lease asset acquired 392,000              
Finance lease liability acquired 392,000              
Fair value adjustments of operating lease assets (1,100,000)              
Fair value adjustments of finance lease assets (133,000)              
Adjustments to deposits 3,200,000              
Codorus Valley | Subordinated notes                
Business Combination [Line Items]                
Unamortized discount 2,400,000              
Codorus Valley | Junior Subordinated Debt                
Business Combination [Line Items]                
Unamortized discount 2,700,000              
Codorus Valley | Premises and Equipment                
Business Combination [Line Items]                
Adjustment to premises and equipment 6,600,000              
Codorus Valley | Core deposit intangible                
Business Combination [Line Items]                
Other intangible assets, net 40,100,000              
Codorus Valley | Customer relationship                
Business Combination [Line Items]                
Other intangible assets, net $ 10,600,000              
Expected life (in years) 10 years              
Common Stock | Codorus Valley                
Business Combination [Line Items]                
Business combination, shares of common stock to be received by acquiree for number of shares outstanding ratio 0.875              
Codorus Valley | Subordinated notes | Codorus Valley Unsecured Subordinated Notes                
Business Combination [Line Items]                
Debt redeemed amount           $ 31,000,000.0    
Codorus Valley | Common Stock | Codorus Valley                
Business Combination [Line Items]                
Common stock, stated value (in usd per share) | $ / shares $ 2.50              
Orrstown Financial Services Inc | Codorus Valley                
Business Combination [Line Items]                
Common stock, no par value (usd per share) | $ / shares $ 0              
Shares issued for common stock (in shares) | shares 8,532,038              
Share price (in usd per share) | $ / shares               $ 27.36