Loans and Allowance for Credit Loses - Allowance for loan losses by segment (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	$ 57,418	$ 55,765	$ 56,443	$ 52,277	$ 52,277
Provision for (Recovery of) Credit Losses for Loans and Leases	2,750	900	4,650	4,400
Loans and Leases Charged-off	(2,442)	(276)	(3,838)	(294)
Recoveries of Loans and Leases	93	1	564	7
Total Ending Allowance Balance	57,819	56,390	57,819	56,390	56,443
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss	5,746		5,746		3,812
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	52,073		52,073		52,631
Allowance for Credit Loss Total	57,819	56,390	57,819	56,390	56,443
Loans, Individually Evaluated for Credit Loss	43,791		43,791		55,757
Loans, Collectively Evaluated for Credit Loss	4,463,043		4,463,043		4,253,760
Totals	4,506,834		4,506,834		4,309,517
Commercial
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	6,046	5,935	5,982	5,630	5,630
Provision for (Recovery of) Credit Losses for Loans and Leases	(494)	1,112	(257)	1,416
Loans and Leases Charged-off		(254)	(639)	(254)
Recoveries of Loans and Leases	91		557	1
Total Ending Allowance Balance	5,643	6,793	5,643	6,793	5,982
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss	182		182		134
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	5,461		5,461		5,848
Allowance for Credit Loss Total	5,643	6,793	5,643	6,793	5,982
Loans, Individually Evaluated for Credit Loss	10,310		10,310		10,527
Loans, Collectively Evaluated for Credit Loss	617,259		617,259		536,718
Totals	627,569		627,569		547,245
Leases
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	296	381	352	368	368
Provision for (Recovery of) Credit Losses for Loans and Leases	16	52	(40)	65
Loans and Leases Charged-off		(15)		(15)
Total Ending Allowance Balance	312	418	312	418	352
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	312		312		352
Allowance for Credit Loss Total	312	418	312	418	352
Loans, Collectively Evaluated for Credit Loss	41,854		41,854		43,407
Totals	41,854		41,854		43,407
Construction and Land Development
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	1,400	1,104	1,687	866	866
Provision for (Recovery of) Credit Losses for Loans and Leases	347	176	60	414
Total Ending Allowance Balance	1,747	1,280	1,747	1,280	1,687
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	1,747		1,747		1,687
Allowance for Credit Loss Total	1,747	1,280	1,747	1,280	1,687
Loans, Individually Evaluated for Credit Loss	22		22		34
Loans, Collectively Evaluated for Credit Loss	229,456		229,456		216,129
Totals	229,478		229,478		216,163
1-4 Family Construction
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	313	278	316	331	331
Provision for (Recovery of) Credit Losses for Loans and Leases	79	16	76	(37)
Total Ending Allowance Balance	392	294	392	294	316
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	392		392		316
Allowance for Credit Loss Total	392	294	392	294	316
Loans, Collectively Evaluated for Credit Loss	57,825		57,825		45,152
Totals	57,825		57,825		45,152
Real Estate Mortgage
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	49,084	47,914	47,925	44,940	44,940
Provision for (Recovery of) Credit Losses for Loans and Leases	2,845	(490)	4,722	2,484
Loans and Leases Charged-off	(2,434)		(3,152)
Recoveries of Loans and Leases	1		1
Total Ending Allowance Balance	49,496	47,424	49,496	47,424	47,925
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss	5,564		5,564		3,678
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	43,932		43,932		44,247
Allowance for Credit Loss Total	49,496	47,424	49,496	47,424	47,925
Loans, Individually Evaluated for Credit Loss	33,459		33,459		45,196
Loans, Collectively Evaluated for Credit Loss	3,488,023		3,488,023		3,393,142
Totals	3,521,482		3,521,482		3,438,338
1-4 Family Mortgage
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	2,276	2,413	2,475	2,795	2,795
Provision for (Recovery of) Credit Losses for Loans and Leases	(136)	19	(326)	(363)
Loans and Leases Charged-off			(9)
Total Ending Allowance Balance	2,140	2,432	2,140	2,432	2,475
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	2,140		2,140		2,475
Allowance for Credit Loss Total	2,140	2,432	2,140	2,432	2,475
Loans, Individually Evaluated for Credit Loss	1,328		1,328		1,000
Loans, Collectively Evaluated for Credit Loss	455,130		455,130		495,142
Totals	456,458		456,458		496,142
Multifamily
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	25,019	23,921	23,775	23,120	23,120
Provision for (Recovery of) Credit Losses for Loans and Leases	784	(691)	2,737	110
Loans and Leases Charged-off	(2,434)		(3,143)
Recoveries of Loans and Leases	1		1
Total Ending Allowance Balance	23,370	23,230	23,370	23,230	23,775
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss					789
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	23,370		23,370		22,986
Allowance for Credit Loss Total	23,370	23,230	23,370	23,230	23,775
Loans, Individually Evaluated for Credit Loss	9,572		9,572		23,776
Loans, Collectively Evaluated for Credit Loss	1,652,193		1,652,193		1,563,562
Totals	1,661,765		1,661,765		1,587,338
CRE Owner Occupied
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	1,033	1,137	1,080	1,290	1,290
Provision for (Recovery of) Credit Losses for Loans and Leases	3	(25)	(44)	(178)
Total Ending Allowance Balance	1,036	1,112	1,036	1,112	1,080
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	1,036		1,036		1,080
Allowance for Credit Loss Total	1,036	1,112	1,036	1,112	1,080
Loans, Individually Evaluated for Credit Loss	3,331		3,331		3,553
Loans, Collectively Evaluated for Credit Loss	188,333		188,333		186,201
Totals	191,664		191,664		189,754
CRE Non-owner Occupied
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	20,756	20,443	20,595	17,735	17,735
Provision for (Recovery of) Credit Losses for Loans and Leases	2,194	207	2,355	2,915
Total Ending Allowance Balance	22,950	20,650	22,950	20,650	20,595
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss	5,564		5,564		2,889
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	17,386		17,386		17,706
Allowance for Credit Loss Total	22,950	20,650	22,950	20,650	20,595
Loans, Individually Evaluated for Credit Loss	19,228		19,228		16,867
Loans, Collectively Evaluated for Credit Loss	1,192,367		1,192,367		1,148,237
Totals	1,211,595		1,211,595		1,165,104
Consumer and other
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	279	153	181	142	142
Provision for (Recovery of) Credit Losses for Loans and Leases	(43)	34	89	58
Loans and Leases Charged-off	(8)	(7)	(47)	(25)
Recoveries of Loans and Leases	1	1	6	6
Total Ending Allowance Balance	229	181	229	181	181
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	229		229		181
Allowance for Credit Loss Total	229	$ 181	229	$ 181	181
Loans, Collectively Evaluated for Credit Loss	28,626		28,626		19,212
Totals	$ 28,626		$ 28,626		$ 19,212

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount of allowance for credit loss on financing receivable evaluated on collective basis. Excludes financing receivable evaluated on individual basis.

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Amount of allowance for credit loss on financing receivable evaluated on individual basis. Excludes financing receivable evaluated on collective basis.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of financing receivable collectively evaluated for credit loss. Excludes financing receivable individually evaluated for credit loss.

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Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

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