Fair Value Measurements (Details 7) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets:
Cash and due from banks	$ 41,533	$ 77,474
Federal funds sold and interest bearing deposits with other banks	39,381	52,194
Investment securities available-for-sale	1,583,244	1,622,600
Other investments	25,075	25,075
Mortgages held for sale	2,881	1,442
Loans and leases, net of allowance for loan and lease losses	6,414,748	6,370,953
Liabilities:
Long-term debt and mandatorily redeemable securities	39,406	47,911
Subordinated notes	58,764	58,764
Carrying or Contract Value
Assets:
Cash and due from banks	41,533	77,474
Federal funds sold and interest bearing deposits with other banks	39,381	52,194
Investment securities available-for-sale	1,583,244	1,622,600
Other investments	25,075	25,075
Mortgages held for sale	2,881	1,442
Loans and leases, net of allowance for loan and lease losses	6,414,748	6,370,953
Mortgage servicing rights	3,574	3,670
Accrued interest receivable	30,685	30,232
Interest rate swaps	21,526	22,704
Liabilities:
Deposits	7,055,311	7,038,581
Short-term borrowings	249,580	312,359
Long-term debt and mandatorily redeemable securities	39,406	47,911
Subordinated notes	58,764	58,764
Accrued interest payable	32,216	29,520
Interest rate swaps	21,936	23,140
Off-balance-sheet instruments	0	0
Fair Value
Assets:
Cash and due from banks	41,533	77,474
Federal funds sold and interest bearing deposits with other banks	39,381	52,194
Investment securities available-for-sale	1,583,244	1,622,600
Other investments	25,075	25,075
Mortgages held for sale	2,881	1,442
Loans and leases, net of allowance for loan and lease losses	6,224,374	6,204,791
Mortgage servicing rights	8,357	8,151
Accrued interest receivable	30,685	30,232
Interest rate swaps	21,526	22,704
Liabilities:
Deposits	7,048,994	7,033,549
Short-term borrowings	249,580	312,359
Long-term debt and mandatorily redeemable securities	38,709	47,098
Subordinated notes	55,494	55,842
Accrued interest payable	32,216	29,520
Interest rate swaps	21,936	23,140
Off-balance-sheet instruments	118	120
Level 1
Assets:
Cash and due from banks	41,533	77,474
Federal funds sold and interest bearing deposits with other banks	39,381	52,194
Investment securities available-for-sale	545,675	541,461
Other investments	25,075	25,075
Mortgages held for sale	0	0
Loans and leases, net of allowance for loan and lease losses	0	0
Mortgage servicing rights	0	0
Accrued interest receivable	0	0
Interest rate swaps	0	0
Liabilities:
Deposits	5,253,650	5,299,896
Short-term borrowings	83,534	56,013
Long-term debt and mandatorily redeemable securities	0	0
Subordinated notes	0	0
Accrued interest payable	0	0
Interest rate swaps	0	0
Off-balance-sheet instruments	0	0
Level 2
Assets:
Cash and due from banks	0	0
Federal funds sold and interest bearing deposits with other banks	0	0
Investment securities available-for-sale	1,036,525	1,079,978
Other investments	0	0
Mortgages held for sale	2,881	1,442
Loans and leases, net of allowance for loan and lease losses	0	0
Mortgage servicing rights	0	0
Accrued interest receivable	30,685	30,232
Interest rate swaps	21,526	22,704
Liabilities:
Deposits	1,795,344	1,733,653
Short-term borrowings	166,046	256,346
Long-term debt and mandatorily redeemable securities	38,709	47,098
Subordinated notes	55,494	55,842
Accrued interest payable	32,216	29,520
Interest rate swaps	21,936	23,140
Off-balance-sheet instruments	118	120
Level 3
Assets:
Cash and due from banks	0	0
Federal funds sold and interest bearing deposits with other banks	0	0
Investment securities available-for-sale	1,044	1,161
Other investments	0	0
Mortgages held for sale	0	0
Loans and leases, net of allowance for loan and lease losses	6,224,374	6,204,791
Mortgage servicing rights	8,357	8,151
Accrued interest receivable	0	0
Interest rate swaps	0	0
Liabilities:
Deposits	0	0
Short-term borrowings	0	0
Long-term debt and mandatorily redeemable securities	0	0
Subordinated notes	0	0
Accrued interest payable	0	0
Interest rate swaps	0	0
Off-balance-sheet instruments	$ 0	$ 0