Loans, net and allowance for credit losses- Major Classification of Loans by Past Due Status (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	$ 3,991,539	$ 3,993,505
Loans > 90 Days and Accruing	655	458
Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	25,336	29,841
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	10,800	10,962
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	1,859	3,093
Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	12,677	15,786
Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	3,966,203	3,963,664
Commercial
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	658,858	648,102
Loans > 90 Days and Accruing	174
Commercial \| Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	3,590	3,735
Commercial \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	1,126	2,740
Commercial \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	863	157
Commercial \| Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	1,601	838
Commercial \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	655,268	644,367
Municipal
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	194,139	187,918
Municipal \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	194,139	187,918
Commercial real estate
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,275,241	2,294,113
Loans > 90 Days and Accruing	89
Commercial real estate \| Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	10,959	14,105
Commercial real estate \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,748	2,800
Commercial real estate \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	257	141
Commercial real estate \| Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	7,954	11,164
Commercial real estate \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,264,282	2,280,008
Residential real estate
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	560,067	551,383
Loans > 90 Days and Accruing	389	403
Loans in the formal process of foreclosure	300	200
Residential real estate \| Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	5,245	5,864
Residential real estate \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	3,269	2,390
Residential real estate \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	75	997
Residential real estate \| Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	1,901	2,477
Residential real estate \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	554,822	545,519
Consumer
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	123,028	132,869
Loans > 90 Days and Accruing	3	55
Consumer \| Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	3,112	3,424
Consumer \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,077	2,393
Consumer \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	540	539
Consumer \| Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	495	492
Consumer \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	119,916	129,445
Equipment Financing
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	180,206	179,120
Equipment Financing \| Financial Assets, Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	2,430	2,713
Equipment Financing \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	1,580	639
Equipment Financing \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	124	1,259
Equipment Financing \| Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	726	815
Equipment Financing \| Financial Assets, Not Past Due
Financing Receivable, Recorded Investment, Past Due.
Loans held for investment	$ 177,776	$ 176,407

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

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