v3.26.1
MERGER - Summary of Consideration Paid and Estimated Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jul. 01, 2024
Jun. 30, 2026
Dec. 31, 2025
Fair Value Adjustment      
Goodwill   $ 0 $ 1,645
Codorus Valley      
Business Combination [Line Items]      
Total purchase price consideration $ 233,437    
Fair Value Adjustment      
Cash and cash equivalents (31)    
Securities available for sale (4,532)    
Loans, net of allowance for credit losses ("ACL") (72,368)    
Premises and equipment, net 6,551    
Accrued interest receivable 79    
Goodwill (2,301)    
Other intangible assets, net 50,719    
Deferred income tax asset, net 3,088    
Other assets (2,781)    
Total identifiable assets acquired (21,576)    
Deposits (3,218)    
FHLB advances and other borrowings (803)    
Subordinated notes and trust preferred debt (4,983)    
Other liabilities 3,241    
Total liabilities assumed (5,763)    
Total identifiable net assets (15,813)    
Codorus Valley | Book Value      
Recognized amounts of identifiable assets acquired and liabilities assumed      
Cash and cash equivalents 45,290    
Restricted investments in bank stocks 1,168    
Securities available for sale 331,032    
Loans, net of allowance for credit losses ("ACL") 1,715,761    
Premises and equipment, net 17,553    
Cash surrender value of life insurance 62,817    
Accrued interest receivable 8,138    
Goodwill 2,301    
Other intangible assets, net 0    
Deferred income tax asset, net 16,969    
Other assets 21,024    
Total identifiable assets acquired 2,222,053    
Deposits 1,948,467    
Securities sold under agreements to repurchase 7,943    
FHLB advances and other borrowings 1,195    
Subordinated notes and trust preferred debt 41,195    
Other liabilities 25,030    
Total liabilities assumed 2,023,830    
Total identifiable net assets 198,223    
Codorus Valley | Fair Value      
Business Combination [Line Items]      
Total purchase price consideration 233,437    
Recognized amounts of identifiable assets acquired and liabilities assumed      
Cash and cash equivalents 45,259    
Restricted investments in bank stocks 1,168    
Securities available for sale 326,500    
Loans, net of allowance for credit losses ("ACL") 1,643,393    
Premises and equipment, net 24,104    
Cash surrender value of life insurance 62,817    
Accrued interest receivable 8,217    
Other intangible assets, net 50,719    
Deferred income tax asset, net 20,057    
Other assets 18,243    
Total identifiable assets acquired 2,200,477    
Deposits 1,945,249    
Securities sold under agreements to repurchase 7,943    
FHLB advances and other borrowings 392    
Subordinated notes and trust preferred debt 36,212    
Other liabilities 28,271    
Total liabilities assumed 2,018,067    
Total identifiable net assets 182,410    
Goodwill $ 51,027