Loans, net and allowance for credit losses - Major Classifications of Loans Outstanding (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable
Loans	$ 4,016,367	$ 3,993,505
Financing receivable, accrued interest, after allowance for credit loss	14,500	13,200
Accrued interest receivable on available of sale securities	2,400	2,200
Accrued interest receivable on held to maturity securities	200	200
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable
Loans	664,615	648,102
Municipal
Accounts, Notes, Loans and Financing Receivable
Loans	196,469	187,918
Commercial, Industrial and Municipal
Accounts, Notes, Loans and Financing Receivable
Loans	861,084	836,020
Real estate
Accounts, Notes, Loans and Financing Receivable
Loans	2,867,265	2,845,496
Commercial real estate
Accounts, Notes, Loans and Financing Receivable
Loans	2,278,746	2,294,113
Residential real estate
Accounts, Notes, Loans and Financing Receivable
Loans	588,519	551,383
Consumer
Accounts, Notes, Loans and Financing Receivable
Loans	114,510	132,869
Indirect auto
Accounts, Notes, Loans and Financing Receivable
Loans	100,298	117,914
Consumer other
Accounts, Notes, Loans and Financing Receivable
Loans	14,212	14,955
Equipment financing
Accounts, Notes, Loans and Financing Receivable
Loans	$ 173,508	$ 179,120

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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