Loans, net and allowance for credit losses- Major Classification of Loans by Past Due Status (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	$ 3,997,525	$ 3,993,505
Loans > 90 Days and Accruing	72	458
Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	24,238	29,841
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	10,957	10,962
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,135	3,093
Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	11,146	15,786
Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	3,973,287	3,963,664
Commercial
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	678,539	648,102
Commercial \| Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,770	3,735
Commercial \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	648	2,740
Commercial \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	200	157
Commercial \| Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	1,922	838
Commercial \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	675,769	644,367
Municipal
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	194,529	187,918
Municipal \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	194,529	187,918
Commercial real estate
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,252,574	2,294,113
Commercial real estate \| Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	12,444	14,105
Commercial real estate \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	5,049	2,800
Commercial real estate \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	411	141
Commercial real estate \| Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	6,984	11,164
Commercial real estate \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,240,130	2,280,008
Residential real estate
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	573,864	551,383
Loans > 90 Days and Accruing	70	403
Loans in the formal process of foreclosure	200	200
Residential real estate \| Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	3,753	5,864
Residential real estate \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	1,599	2,390
Residential real estate \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	650	997
Residential real estate \| Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	1,504	2,477
Residential real estate \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	570,111	545,519
Consumer
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	118,547	132,869
Loans > 90 Days and Accruing	2	55
Consumer \| Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,914	3,424
Consumer \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,154	2,393
Consumer \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	448	539
Consumer \| Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	312	492
Consumer \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	115,633	129,445
Equipment Financing
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	179,472	179,120
Equipment Financing \| Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,357	2,713
Equipment Financing \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	1,507	639
Equipment Financing \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	426	1,259
Equipment Financing \| Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	424	815
Equipment Financing \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	$ 177,115	$ 176,407

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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