v3.25.1
Fair Value Measurements - Carrying Values and Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
ASSETS    
Securities available for sale $ 1,011,111 $ 987,591
Portfolio loans, net 7,737,339 7,641,464
Derivative financial assets 48,493 60,890
LIABILITIES    
Junior subordinated debt securities 49,433 49,418
Derivative financial liabilities 55,338 70,860
Carrying Value    
ASSETS    
Cash and due from banks, including interest-bearing deposits 211,836 244,820
Securities available for sale 1,011,111 987,591
Portfolio loans, net 7,737,339 7,641,464
Collateral receivable 595 2,034
Securities held in a deferred compensation plan 10,692 10,876
Mortgage servicing rights 5,478 5,646
LIABILITIES    
Deposits 7,892,933 7,783,117
Collateral payable 42,834 52,516
Short-term borrowings 95,000 150,000
Long-term borrowings 50,876 50,896
Junior subordinated debt securities 49,433 49,418
Carrying Value | Interest rate swaps - commercial loans    
ASSETS    
Derivative financial assets   60,890
Carrying Value | Interest rate swap contracts - commercial loans    
ASSETS    
Derivative financial assets 48,493  
LIABILITIES    
Derivative financial liabilities 48,865 61,271
Carrying Value | Interest rate swap contracts - cash flow hedge    
LIABILITIES    
Derivative financial liabilities 6,473 9,589
Fair Value Measurements    
ASSETS    
Cash and due from banks, including interest-bearing deposits 211,836 244,820
Securities available for sale 1,011,111 987,591
Portfolio loans, net 7,507,010 7,362,898
Collateral receivable 595 2,034
Securities held in a deferred compensation plan 10,692 10,876
Mortgage servicing rights 8,126 8,533
LIABILITIES    
Deposits 7,888,880 7,778,740
Collateral payable 42,834 52,516
Short-term borrowings 95,000 150,000
Long-term borrowings 50,815 50,652
Junior subordinated debt securities 49,433 49,418
Fair Value Measurements | Interest rate swaps - commercial loans    
ASSETS    
Derivative financial assets   60,890
Fair Value Measurements | Interest rate swap contracts - commercial loans    
ASSETS    
Derivative financial assets 48,493  
LIABILITIES    
Derivative financial liabilities 48,865 61,271
Fair Value Measurements | Interest rate swap contracts - cash flow hedge    
LIABILITIES    
Derivative financial liabilities 6,473 9,589
Fair Value Measurements | Level 1    
ASSETS    
Cash and due from banks, including interest-bearing deposits 211,836 244,820
Securities available for sale 94,766 93,944
Portfolio loans, net 0 0
Collateral receivable 595 2,034
Securities held in a deferred compensation plan 10,692 10,876
Mortgage servicing rights 0 0
LIABILITIES    
Deposits 6,070,301 5,916,154
Collateral payable 42,834 52,516
Short-term borrowings 0 0
Long-term borrowings 0 0
Junior subordinated debt securities 0 0
Fair Value Measurements | Level 1 | Interest rate swaps - commercial loans    
ASSETS    
Derivative financial assets   0
Fair Value Measurements | Level 1 | Interest rate swap contracts - commercial loans    
ASSETS    
Derivative financial assets 0  
LIABILITIES    
Derivative financial liabilities 0  
Fair Value Measurements | Level 1 | Interest rate swap contracts - cash flow hedge    
LIABILITIES    
Derivative financial liabilities 0 0
Fair Value Measurements | Level 2    
ASSETS    
Cash and due from banks, including interest-bearing deposits 0 0
Securities available for sale 916,345 893,647
Portfolio loans, net 0 0
Collateral receivable 0 0
Securities held in a deferred compensation plan 0 0
Mortgage servicing rights 0 0
LIABILITIES    
Deposits 1,818,579 1,862,586
Collateral payable   0
Short-term borrowings 95,000 150,000
Long-term borrowings 50,815 50,652
Junior subordinated debt securities 49,433 49,418
Fair Value Measurements | Level 2 | Interest rate swaps - commercial loans    
ASSETS    
Derivative financial assets   60,890
Fair Value Measurements | Level 2 | Interest rate swap contracts - commercial loans    
ASSETS    
Derivative financial assets 48,493  
LIABILITIES    
Derivative financial liabilities 48,865 61,271
Fair Value Measurements | Level 2 | Interest rate swap contracts - cash flow hedge    
LIABILITIES    
Derivative financial liabilities 6,473 9,589
Fair Value Measurements | Level 3    
ASSETS    
Cash and due from banks, including interest-bearing deposits 0 0
Securities available for sale 0 0
Portfolio loans, net 7,507,010 7,362,898
Collateral receivable 0 0
Securities held in a deferred compensation plan 0 0
Mortgage servicing rights 8,126 8,533
LIABILITIES    
Deposits 0 0
Collateral payable   0
Short-term borrowings 0 0
Long-term borrowings 0 0
Junior subordinated debt securities 0 0
Fair Value Measurements | Level 3 | Interest rate swaps - commercial loans    
ASSETS    
Derivative financial assets   0
Fair Value Measurements | Level 3 | Interest rate swap contracts - commercial loans    
ASSETS    
Derivative financial assets 0  
LIABILITIES    
Derivative financial liabilities 0  
Fair Value Measurements | Level 3 | Interest rate swap contracts - cash flow hedge    
LIABILITIES    
Derivative financial liabilities $ 0 $ 0