Loans and Allowance for Credit Losses - Allowance for loan losses by segment (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	$ 55,765	$ 51,949	$ 52,277	$ 50,494	$ 50,494
Provision for (Recovery of) Credit Losses for Loans and Leases	900		4,400	1,450
Loans and Leases Charged-off	(276)	(937)	(294)	(949)
Recoveries of Loans and Leases	1	6	7	23
Total Ending Allowance Balance	56,390	51,018	56,390	51,018	52,277
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss	4,432		4,432		144
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	51,958		51,958		52,133
Loans and Leases Receivable, Allowance, Total	56,390	51,018	56,390	51,018	52,277
Loans, Individually Evaluated for Credit Loss	59,976		59,976		24,699
Loans, Collectively Evaluated for Credit Loss	4,154,578		4,154,578		3,843,815
Totals	4,214,554		4,214,554		3,868,514
Commercial
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	5,935	6,018	5,630	5,398	5,398
Provision for (Recovery of) Credit Losses for Loans and Leases	1,112	(350)	1,416	265
Loans and Leases Charged-off	(254)		(254)
Recoveries of Loans and Leases		5	1	10
Total Ending Allowance Balance	6,793	5,673	6,793	5,673	5,630
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss	1,317		1,317		133
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	5,476		5,476		5,497
Loans and Leases Receivable, Allowance, Total	6,793	5,673	6,793	5,673	5,630
Loans, Individually Evaluated for Credit Loss	14,205		14,205		14,045
Loans, Collectively Evaluated for Credit Loss	519,271		519,271		483,617
Totals	533,476		533,476		497,662
Leases
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	381		368
Provision for (Recovery of) Credit Losses for Loans and Leases	52		65
Loans and Leases Charged-off	(15)		(15)
Total Ending Allowance Balance	418		418		368
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss					6
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	418		418		362
Loans and Leases Receivable, Allowance, Total	418		418		368
Loans, Individually Evaluated for Credit Loss	19		19		34
Loans, Collectively Evaluated for Credit Loss	43,167		43,167		44,257
Totals	43,186		43,186		44,291
Construction and Land Development
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	1,104	1,220	866	2,156	2,156
Provision for (Recovery of) Credit Losses for Loans and Leases	176	(141)	414	(1,077)
Total Ending Allowance Balance	1,280	1,079	1,280	1,079	866
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	1,280		1,280		866
Loans and Leases Receivable, Allowance, Total	1,280	1,079	1,280	1,079	866
Loans, Individually Evaluated for Credit Loss	40		40		58
Loans, Collectively Evaluated for Credit Loss	159,951		159,951		97,197
Totals	159,991		159,991		97,255
1-4 Family Construction
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	278	522	331	558	558
Provision for (Recovery of) Credit Losses for Loans and Leases	16	(128)	(37)	(164)
Total Ending Allowance Balance	294	394	294	394	331
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	294		294		331
Loans and Leases Receivable, Allowance, Total	294	394	294	394	331
Loans, Collectively Evaluated for Credit Loss	41,739		41,739		41,961
Totals	41,739		41,739		41,961
Real Estate Mortgage
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	47,914	44,093	44,940	42,277	42,277
Provision for (Recovery of) Credit Losses for Loans and Leases	(490)	585	2,484	2,398
Loans and Leases Charged-off		(935)		(935)
Recoveries of Loans and Leases				3
Total Ending Allowance Balance	47,424	43,743	47,424	43,743	44,940
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss	3,115		3,115
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	44,309		44,309		44,940
Loans and Leases Receivable, Allowance, Total	47,424	43,743	47,424	43,743	44,940
Loans, Individually Evaluated for Credit Loss	45,712		45,712		10,544
Loans, Collectively Evaluated for Credit Loss	3,371,396		3,371,396		3,163,805
Totals	3,417,108		3,417,108		3,174,349
1-4 Family Mortgage
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	2,413	2,774	2,795	2,651	2,651
Provision for (Recovery of) Credit Losses for Loans and Leases	19	5	(363)	125
Recoveries of Loans and Leases				3
Total Ending Allowance Balance	2,432	2,779	2,432	2,779	2,795
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	2,432		2,432		2,795
Loans and Leases Receivable, Allowance, Total	2,432	2,779	2,432	2,779	2,795
Loans, Individually Evaluated for Credit Loss	1,143		1,143		708
Loans, Collectively Evaluated for Credit Loss	486,154		486,154		473,675
Totals	487,297		487,297		474,383
Multifamily
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	23,921	22,480	23,120	22,217	22,217
Provision for (Recovery of) Credit Losses for Loans and Leases	(691)	(125)	110	138
Total Ending Allowance Balance	23,230	22,355	23,230	22,355	23,120
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss	226		226
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	23,004		23,004		23,120
Loans and Leases Receivable, Allowance, Total	23,230	22,355	23,230	22,355	23,120
Loans, Individually Evaluated for Credit Loss	23,857		23,857
Loans, Collectively Evaluated for Credit Loss	1,554,366		1,554,366		1,425,610
Totals	1,578,223		1,578,223		1,425,610
CRE Owner Occupied
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	1,137	1,258	1,290	1,184	1,184
Provision for (Recovery of) Credit Losses for Loans and Leases	(25)	(25)	(178)	49
Total Ending Allowance Balance	1,112	1,233	1,112	1,233	1,290
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	1,112		1,112		1,290
Loans and Leases Receivable, Allowance, Total	1,112	1,233	1,112	1,233	1,290
Loans, Individually Evaluated for Credit Loss	4,525		4,525		1,558
Loans, Collectively Evaluated for Credit Loss	188,441		188,441		189,690
Totals	192,966		192,966		191,248
CRE Non-owner Occupied
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	20,443	17,581	17,735	16,225	16,225
Provision for (Recovery of) Credit Losses for Loans and Leases	207	730	2,915	2,086
Loans and Leases Charged-off		(935)		(935)
Total Ending Allowance Balance	20,650	17,376	20,650	17,376	17,735
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss	2,889		2,889
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	17,761		17,761		17,735
Loans and Leases Receivable, Allowance, Total	20,650	17,376	20,650	17,376	17,735
Loans, Individually Evaluated for Credit Loss	16,187		16,187		8,278
Loans, Collectively Evaluated for Credit Loss	1,142,435		1,142,435		1,074,830
Totals	1,158,622		1,158,622		1,083,108
Consumer and other
Allowance for Credit Losses for Loans and Leases:
Beginning Balance	153	96	142	105	105
Provision for (Recovery of) Credit Losses for Loans and Leases	34	34	58	28
Loans and Leases Charged-off	(7)	(2)	(25)	(14)
Recoveries of Loans and Leases	1	1	6	10
Total Ending Allowance Balance	181	129	181	129	142
Allowance for loan losses and the recorded investment
Allowance for Loan Losses and Loans, Individually Evaluated for Credit Loss					5
Allowance for Loan Losses and Loans, Collectively Evaluated for Credit Loss	181		181		137
Loans and Leases Receivable, Allowance, Total	181	$ 129	181	$ 129	142
Loans, Individually Evaluated for Credit Loss					18
Loans, Collectively Evaluated for Credit Loss	19,054		19,054		12,978
Totals	$ 19,054		$ 19,054		$ 12,996

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

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