Loans and Allowance for Credit Losses - Loans outstanding by portfolio segment (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Loans and Allowance for Loan Losses
Carrying amount	$ 2,915,792	$ 2,759,583
Deferred loan fees and costs	264	248
Accrued interest receivable	$ 13,500	$ 12,200
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Interest Receivable	Interest Receivable
MPB
Loans and Allowance for Loan Losses
Unearned discount	$ 3,900	$ 5,100
Commercial
Loans and Allowance for Loan Losses
Carrying amount	2,008,662	1,849,267
Consumer
Loans and Allowance for Loan Losses
Carrying amount	907,130	910,316
Commercial and industrial | Commercial
Loans and Allowance for Loan Losses
Carrying amount	591,779	562,180
Commercial real estate | Commercial
Loans and Allowance for Loan Losses
Carrying amount	1,334,924	1,210,114
Commercial real estate | Commercial | Construction, land and development
Loans and Allowance for Loan Losses
Carrying amount	161,751	124,034
Commercial real estate | Commercial | Multifamily
Loans and Allowance for Loan Losses
Carrying amount	242,041	245,103
Commercial real estate | Commercial | Non-owner occupied
Loans and Allowance for Loan Losses
Carrying amount	647,776	569,354
Commercial real estate | Commercial | Owner occupied
Loans and Allowance for Loan Losses
Carrying amount	283,356	271,623
Commercial real estate | Agricultural
Loans and Allowance for Loan Losses
Carrying amount	81,959	76,973
Commercial real estate | Agricultural | Land
Loans and Allowance for Loan Losses
Carrying amount	41,410	40,832
Commercial real estate | Agricultural | Production
Loans and Allowance for Loan Losses
Carrying amount	40,549	36,141
Commercial real estate | Consumer
Loans and Allowance for Loan Losses
Carrying amount	871,393	881,013
Commercial real estate | Consumer | First lien
Loans and Allowance for Loan Losses
Carrying amount		697,900
Commercial real estate | Consumer | Construction
Loans and Allowance for Loan Losses
Carrying amount	22,573	28,979
Commercial real estate | Consumer | HELOC
Loans and Allowance for Loan Losses
Carrying amount	126,211	118,315
Commercial real estate | Consumer | Junior lien
Loans and Allowance for Loan Losses
Carrying amount	36,323	35,819
Residential | Consumer
Loans and Allowance for Loan Losses
Carrying amount	871,393	881,013
Residential | Consumer | First lien
Loans and Allowance for Loan Losses
Carrying amount	686,286	697,900
Residential | Consumer | Construction
Loans and Allowance for Loan Losses
Carrying amount	22,573	28,979
Residential | Consumer | HELOC
Loans and Allowance for Loan Losses
Carrying amount	126,211	118,315
Residential | Consumer | Junior lien
Loans and Allowance for Loan Losses
Carrying amount	36,323	35,819
Other consumer | Consumer | Other consumer
Loans and Allowance for Loan Losses
Carrying amount	$ 35,737	$ 29,303