v3.26.1
Borrowings (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Short-Term Debt [Line Items]    
Federal funds purchased, interest rate 3.97% 3.98%
Federal funds purchased $ 297,277 $ 586,882
Other short-term borrowings 297,277 586,882
Federal Home Loan Bank borrowings 323,833 64,333
Securities available for sale 1,012,232 955,584
Collateral loans 1,112,000 1,051,000
Stock of Federal Home Loan Bank 30,745 32,063
Collateral Pledged    
Short-Term Debt [Line Items]    
Federal funds purchased $ 621,110 $ 651,220
Federal home loan bank advances, due 2027    
Short-Term Debt [Line Items]    
Bank Term Funding Program, interest rate 3.87% 4.58%
Federal Home Loan Bank borrowings $ 165,000 $ 40,000
Federal Home Loan Bank Advances, Due 2030    
Short-Term Debt [Line Items]    
Bank Term Funding Program, interest rate 4.06%  
Federal Home Loan Bank borrowings $ 23,833 24,333
Federal Funds Purchased    
Short-Term Debt [Line Items]    
Debt, unused borrowing capacity 175,000 175,000
Federal Funds Purchased | Collateral Pledged    
Short-Term Debt [Line Items]    
Debt, unused borrowing capacity 50,000  
Securities available for sale 47,920  
Federal reserve bank discount window    
Short-Term Debt [Line Items]    
Debt, unused borrowing capacity $ 104,810 $ 105,540
Federal Home Loan Bank Advances, Due 2026    
Short-Term Debt [Line Items]    
Bank Term Funding Program, interest rate 3.82% 3.87%
Federal Home Loan Bank borrowings $ 135,000 $ 0