Fair Value - Carrying amounts and estimated fair value of financial instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Carrying amount and estimated fair value of financial instruments
Cash and due from banks	$ 69,231	$ 76,759
Federal funds sold		282
Securities available-for-sale	1,218,287	1,259,137
Restricted stock	15,371	15,364
Loans, net	3,016,655	3,025,621
Accrued interest receivable	23,851	24,877
Deposits	(4,102,762)	(4,094,552)
Short-term borrowings	(88,873)	(67,221)
Other borrowings	(58,510)	(108,496)
Accrued interest payable	(3,142)	(2,588)
Level 1
Carrying amount and estimated fair value of financial instruments
Cash and due from banks	25,420	25,467
Level 2
Carrying amount and estimated fair value of financial instruments
Cash and due from banks	43,811	51,292
Federal funds sold		282
Securities available-for-sale	1,214,594	1,254,955
Accrued interest receivable	6,608	6,755
Deposits	(4,102,762)	(4,094,552)
Short-term borrowings	(88,873)	(67,221)
Other borrowings	(58,510)	(108,496)
Accrued interest payable	(3,142)	(2,588)
Level 3
Carrying amount and estimated fair value of financial instruments
Securities available-for-sale	3,693	4,182
Loans, net	3,016,655	3,025,621
Accrued interest receivable	17,243	18,122
Carrying Value
Carrying amount and estimated fair value of financial instruments
Cash and due from banks	69,231	76,759
Federal funds sold		282
Securities available-for-sale	1,218,287	1,259,137
Restricted stock	15,371	15,364
Loans, net	3,151,938	3,128,054
Accrued interest receivable	23,851	24,877
Deposits	(4,105,103)	(4,090,068)
Short-term borrowings	(88,873)	(67,221)
Other borrowings	(58,576)	(108,577)
Accrued interest payable	$ (3,142)	$ (2,588)