Loans (Tables)

6 Months Ended

Jun. 30, 2026

Receivables [Abstract]

Loans

Loans were as follows:

	June 30, 2026		December 31, 2025
Commercial and industrial	$	6,325,658	$	6,306,980
Energy:
Production	705,381		767,724
Service	338,407		252,295
Other	89,852		74,650
Total energy	1,133,640		1,094,669
Commercial real estate:
Owner occupied	4,297,680		3,987,913
Non-owner occupied	3,970,141		3,773,028
Construction and land	2,720,755		2,549,869
Total commercial real estate	10,988,576		10,310,810
Consumer real estate:
Home equity lines of credit	1,140,127		1,068,393
Home equity loans	1,045,511		1,035,971
Home improvement loans	862,240		874,148
1-4 family mortgage loans	886,975		594,825
Other	135,129		145,331
Total consumer real estate	4,069,982		3,718,668
Total real estate	15,058,558		14,029,478
Consumer and other	457,802		460,685
Total loans	$	22,975,658	$	21,891,812

Non-Accrual Loans, Segregated by Class of Loans

Non-accrual loans, segregated by class of loans, were as follows:

	June 30, 2026				December 31, 2025
	Total Non-Accrual		Non-Accrual with No Credit Loss Allowance		Total Non-Accrual		Non-Accrual with No Credit Loss Allowance
Loans held for investment:
Commercial and industrial	$	23,691	$	11,209	$	50,659	$	26,693
Energy	2,523		1,303		3,023		1,304
Commercial real estate:
Owner occupied	14,183		11,384		7,581		4,782
Non-owner occupied	4,566		4,566		465		465
Construction and land	56,054		563		1,874		202
Consumer real estate	8,876		4,817		6,615		4,486
Consumer and other	257		176		265		184
Total	$	110,150	$	34,018	$	70,482	$	38,116
Loans held for sale:
Commercial real estate:
Owner occupied	$	2,428	$	2,428	$	—	$	—
Construction and land	139		139		—		—
Total	$	2,567	$	2,567	$	—	$	—

Financing Receivable, Non-Accrual Loans, Segregated by Class of Loan and Year of Origination

The following table presents non-accrual loans as of June 30, 2026, by class and year of origination.

	2026		2025		2024		2023		2022		Prior		Revolving Loans		Revolving Loans Converted to Term		Total
Loans held for investment:
Commercial and industrial	$	421	$	644	$	2,638	$	8,320	$	1,550	$	2,236	$	5,581	$	2,301	$	23,691
Energy	—		—		—		—		—		1,304		1,219		—		2,523
Commercial real estate:
Owner occupied	—		2,834		—		1,891		4,636		4,328		494		—		14,183
Non-owner occupied	—		—		—		3,651		99		376		—		440		4,566
Construction and land	—		—		563		—		53,929		934		—		628		56,054
Consumer real estate	—		—		144		1,747		—		2,113		1,209		3,663		8,876
Consumer and other	—		—		176		—		—		—		81		—		257
Total	$	421	$	3,478	$	3,521	$	15,609	$	60,214	$	11,291	$	8,584	$	7,032	$	110,150
Loans held for sale:
Commercial real estate:
Owner occupied	$	—	$	—	$	—	$	—	$	349	$	2,079	$	—	$	—	$	2,428
Construction and land	—		—		—		—		—		80		—		59		139
Total	$	—	$	—	$	—	$	—	$	349	$	2,159	$	—	$	59	$	2,567

Age Analysis of Past Due Loans, Segregated by Class of Loans

An age analysis of past due loans (including both accruing and non-accruing loans), segregated by class of loans, as of June 30, 2026, was as follows:

	Loans 30-89 Days Past Due		Loans 90 or More Days Past Due		Total Past Due Loans		Current Loans		Total Loans		Accruing Loans 90 or More Days Past Due
Loans held for investment:
Commercial and industrial	$	20,844	$	19,160	$	40,004	$	6,285,654	$	6,325,658	$	4,462
Energy	20,586		2,523		23,109		1,110,531		1,133,640		—
Commercial real estate:
Owner occupied	17,965		10,897		28,862		4,268,818		4,297,680		1,034
Non-owner occupied	61,894		4,336		66,230		3,903,911		3,970,141		—
Construction and land	3,220		57,196		60,416		2,660,339		2,720,755		1,142
Consumer real estate	25,205		15,705		40,910		4,029,072		4,069,982		6,932
Consumer and other	5,572		620		6,192		451,610		457,802		363
Total	$	155,286	$	110,437	$	265,723	$	22,709,935	$	22,975,658	$	13,933
Loans held for sale:
Commercial real estate:
Owner occupied	$	30	$	522	$	552	$	8,730	$	9,282	$	—
Construction and land	80		59		139		—		139		—
Total	$	110	$	581	$	691	$	8,730	$	9,421	$	—

Modification to Borrowers Experiencing Financial Difficulty

The period-end balance of loan modifications, segregated by type of modification, to borrowers experiencing financial difficulty during the six months ended June 30, 2026 and June 30, 2025 are set forth in the table below, regardless of whether such modifications resulted in a new loan. There were no commitments to lend additional funds to these borrowers at June 30, 2026.

	Payment Delay		Percent of Total Class of Loans
June 30, 2026
Commercial real estate:
Non-owner occupied	$	54,939	1.4	%
	$	54,939	0.2
June 30, 2025
Commercial and industrial	$	3,101	0.1	%
Commercial real estate:
Construction and land	1,876		—
	$	4,977	—

Financing Receivables, Modified Loans Past Due in Excess of 90 Days or on Non-Accrual Status, Charge-offs and Proceeds From Sales at Period-End

Information as of June 30, 2026 and June 30, 2025, related to loans modified (by type of modification) in the preceding twelve months, respectively, whereby the borrower was experiencing financial difficulty at the time of modification is set forth in the following table.

	June 30, 2026				June 30, 2025
	Payment Delay		Combination: Payment Delay and Term Extension		Payment Delay		Combination: Payment Delay and Term Extension
Past due in excess of 90 days or on non-accrual status at period-end:
Commercial and industrial	$	—	$	—	$	4,888	$	9,911
Commercial real estate:
Construction and land	—		—		1,876		—
	$	—	$	—	$	6,764	$	9,911
Charge-offs during the period:
Commercial and industrial	$	—	$	—	$	1,108	$	—

Weighted Average Risk Grades for All Commercial Loans by Class and Year of Origination

The following table presents weighted-average risk grades for all commercial loans, by class and year of origination/renewal, as of June 30, 2026.

	2026		2025		2024		2023		2022		Prior		Revolving Loans		Revolving Loans Converted to Term		Total		W/A Risk Grade
Commercial and industrial
Risk grades 1-8	$	1,159,581	$	1,004,061	$	478,473	$	200,594	$	223,871	$	472,403	$	2,245,506	$	40,455	$	5,824,944	6.17
Risk grade 9	39,154		30,237		25,938		4,812		2,375		33,985		46,094		5,182		187,777		9.00
Risk grade 10	6,577		351		18,147		1,280		8,893		9,276		147,715		12,509		204,748		10.00
Risk grade 11	3,436		5,479		13,180		20,125		7,705		15,229		7,460		11,884		84,498		11.00
Risk grade 12	51		354		2,191		7,481		1,115		2,208		960		1,647		16,007		12.00
Risk grade 13	370		290		447		839		435		28		4,621		654		7,684		13.00
	$	1,209,169	$	1,040,772	$	538,376	$	235,131	$	244,394	$	533,129	$	2,452,356	$	72,331	$	6,325,658	6.47
W/A risk grade	6.24		5.89		7.23		7.67		7.18		6.08		6.49		8.61		6.47
Energy
Risk grades 1-8	$	200,839	$	88,660	$	53,637	$	7,581	$	30,537	$	12,555	$	640,825	$	11,077	$	1,045,711	5.82
Risk grade 9	64		14,632		20,730		157		550		—		1,160		743		38,036		9.00
Risk grade 10	—		13,661		—		—		—		—		28,298		1,210		43,169		10.00
Risk grade 11	—		174		—		1,260		2,378		—		—		389		4,201		11.00
Risk grade 12	—		—		—		—		—		1,304		519		—		1,823		12.00
Risk grade 13	—		—		—		—		—		—		700		—		700		13.00
	$	200,903	$	117,127	$	74,367	$	8,998	$	33,465	$	13,859	$	671,502	$	13,419	$	1,133,640	6.12
W/A risk grade	5.86		7.83		7.16		7.95		7.80		5.12		5.66		7.85		6.12
Commercial real estate:
Owner occupied
Risk grades 1-8	$	655,571	$	655,116	$	414,831	$	432,766	$	565,474	$	1,042,450	$	36,870	$	150,361	$	3,953,439	6.83
Risk grade 9	2,554		72,080		5,932		19,824		16,996		14,443		446		13		132,288		9.00
Risk grade 10	—		1,842		9,014		13,513		57,858		7,372		—		—		89,599		10.00
Risk grade 11	909		2,828		1,320		23,937		44,207		31,435		—		3,535		108,171		11.00
Risk grade 12	—		2,234		—		1,891		4,636		4,206		494		—		13,461		12.00
Risk grade 13	—		600		—		—		—		122		—		—		722		13.00
	$	659,034	$	734,700	$	431,097	$	491,931	$	689,171	$	1,100,028	$	37,810	$	153,909	$	4,297,680	7.09
W/A risk grade	6.92		7.15		7.01		7.35		7.47		7.15		6.48		4.89		7.09

	2026		2025		2024		2023		2022		Prior		Revolving Loans		Revolving Loans Converted to Term		Total		W/A Risk Grade
Non-owner occupied
Risk grades 1-8	$	580,880	$	902,408	$	496,011	$	456,884	$	487,906	$	736,134	$	95,156	$	20,411	$	3,775,790	7.02
Risk grade 9	2,452		2,018		30,378		23,350		3,912		7,979		100		—		70,189		9.00
Risk grade 10	1,448		—		—		2,666		—		40,847		—		—		44,961		10.00
Risk grade 11	2,000		1,146		5,011		599		56,912		5,019		3,948		—		74,635		11.00
Risk grade 12	—		—		—		3,651		99		376		—		440		4,566		12.00
Risk grade 13	—		—		—		—		—		—		—		—		—		13.00
	$	586,780	$	905,572	$	531,400	$	487,150	$	548,829	$	790,355	$	99,204	$	20,851	$	3,970,141	7.17
W/A risk grade	7.18		7.11		7.02		7.45		7.57		7.05		6.23		6.26		7.17
Construction and land
Risk grades 1-8	$	398,339	$	816,998	$	684,378	$	192,414	$	153,463	$	24,509	$	187,994	$	5,417	$	2,463,512	7.53
Risk grade 9	8,426		704		8,508		58,824		1,424		—		179		—		78,065		9.00
Risk grade 10	—		11,868		8,500		5,049		—		41,883		12,250		—		79,550		10.00
Risk grade 11	—		2,305		—		40,744		—		525		—		—		43,574		11.00
Risk grade 12	—		—		563		—		52,529		712		—		337		54,141		12.00
Risk grade 13	—		—		—		—		1,400		222		—		291		1,913		13.00
	$	406,765	$	831,875	$	701,949	$	297,031	$	208,816	$	67,851	$	200,423	$	6,045	$	2,720,755	7.80
W/A risk grade	7.43		7.47		7.70		8.34		9.02		8.95		7.75		8.46		7.80
Total commercial real estate	$	1,652,579	$	2,472,147	$	1,664,446	$	1,276,112	$	1,446,816	$	1,958,234	$	337,437	$	180,805	$	10,988,576	7.29
W/A risk grade	7.14		7.24		7.30		7.62		7.73		7.17		7.16		5.17		7.29

Weighted Average Risk Grades for All Commercial Loans by Class

The following tables present weighted average risk grades for all commercial loans by class as of December 31, 2025. Refer to our 2025 Form 10-K for details of these loans by year of origination/renewal.

							Commercial Real Estate
	Commercial and Industrial			Energy			Owner Occupied			Non-owner Occupied			Construction and Land			Total Commercial Real Estate
	W/A Risk Grade	Loans		W/A Risk Grade	Loans		W/A Risk Grade	Loans		W/A Risk Grade	Loans		W/A Risk Grade	Loans		W/A Risk Grade	Loans
Risk grades 1-8	6.06	$	5,663,146	5.86	$	1,010,179	6.77	$	3,608,005	6.96	$	3,494,323	7.61	$	2,319,413	7.05	$	9,421,741
Risk grade 9	9.00	384,532		9.00	35,392		9.00	163,132		9.00	75,560		9.00	127,496		9.00	366,188
Risk grade 10	10.00	94,182		10.00	40,813		10.00	64,117		10.00	143,606		10.00	88,400		10.00	296,123
Risk grade 11	11.00	114,461		11.00	5,262		11.00	145,078		11.00	59,074		11.00	12,686		11.00	216,838
Risk grade 12	12.00	34,041		12.00	2,323		12.00	6,859		12.00	465		12.00	1,361		12.00	8,685
Risk grade 13	13.00	16,618		13.00	700		13.00	722		13.00	—		13.00	513		13.00	1,235
Total	6.44	$	6,306,980	6.16	$	1,094,669	7.08	$	3,987,913	7.18	$	3,773,028	7.78	$	2,549,869	7.29	$	10,310,810

Age analysis of Past Due Consumer Loans by Class and Year of Origination

Information about the payment status of consumer loans, segregated by portfolio segment and year of origination, as of June 30, 2026, was as follows:

	2026		2025		2024		2023		2022		Prior		Revolving Loans		Revolving Loans Converted to Term		Total
Consumer real estate:
Past due 30-89 days	$	115	$	603	$	2,043	$	1,892	$	2,916	$	4,707	$	12,742	$	187	$	25,205
Past due 90 or more days	—		—		425		2,546		764		3,053		5,011		3,906		15,705
Total past due	115		603		2,468		4,438		3,680		7,760		17,753		4,093		40,910
Current loans	467,536		713,417		579,537		418,859		307,242		424,136		1,107,912		10,433		4,029,072
Total	$	467,651	$	714,020	$	582,005	$	423,297	$	310,922	$	431,896	$	1,125,665	$	14,526	$	4,069,982
Consumer and other:
Past due 30-89 days	$	3,062	$	89	$	135	$	163	$	31	$	72	$	1,096	$	924	$	5,572
Past due 90 or more days	265		9		6		3		—		—		140		197		620
Total past due	3,327		98		141		166		31		72		1,236		1,121		6,192
Current loans	36,882		40,160		11,152		6,445		3,138		2,725		330,454		20,654		451,610
Total	$	40,209	$	40,258	$	11,293	$	6,611	$	3,169	$	2,797	$	331,690	$	21,775	$	457,802

Revolving Loans Converted to Term [Table Text Block]

Period-end balances for revolving loans that converted to term during the three and six months ended June 30, 2026 and 2025 were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2026		2025		2026		2025
Commercial and industrial	$	4,769	$	12,234	$	12,783	$	34,255
Energy	297		2,199		9,151		2,242
Commercial real estate:
Owner occupied	—		55,649		—		110,162
Non-owner occupied	—		5,000		117		5,000
Construction and land	—		—		—		—
Consumer real estate	1,720		667		3,472		1,254
Consumer and other	1,499		2,630		3,953		6,296
Total	$	8,285	$	78,379	$	29,476	$	159,209

Financing Receivable, Allowance for Credit Loss By Loan Class Calculated in Accordance With CECL Methodology

The following table presents details of the allowance for credit losses on loans segregated by loan portfolio segment as of June 30, 2026 and December 31, 2025.

June 30, 2026	Commercial and Industrial		Energy		Commercial Real Estate		Consumer Real Estate		Consumer and Other		Total
Modeled expected credit losses	$	50,143	$	5,888	$	16,331	$	24,993	$	6,171	$	103,526
Q-Factor and other qualitative adjustments	33,592		2,819		123,539		2,725		4,982		167,657
Specific allocations	7,685		700		2,635		1,428		81		12,529
Total	$	91,420	$	9,407	$	142,505	$	29,146	$	11,234	$	283,712
December 31, 2025
Modeled expected credit losses	$	56,114	$	7,215	$	17,018	$	24,390	$	5,315	$	110,052
Q-Factor and other qualitative adjustments	25,706		3,648		116,857		610		5,350		152,171
Specific allocations	16,619		700		1,235		637		81		19,272
Total	$	98,439	$	11,563	$	135,110	$	25,637	$	10,746	$	281,495

Activity in Allowance for Loan Losses by Portfolio Segment

The following table details activity in the allowance for credit losses on loans by portfolio segment for the three and six months ended June 30, 2026 and 2025. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.

	Commercial and Industrial		Energy		Commercial Real Estate		Consumer Real Estate		Consumer and Other		Total
Three months ended:
June 30, 2026
Beginning balance	$	98,888	$	11,082	$	138,042	$	27,394	$	10,809	$	286,215
Credit loss expense (benefit)	(5,668)		(1,748)		6,563		3,628		4,249		7,024
Charge-offs	(2,356)		(17)		(2,103)		(2,424)		(6,726)		(13,626)
Recoveries	556		90		3		548		2,902		4,099
Net (charge-offs) recoveries	(1,800)		73		(2,100)		(1,876)		(3,824)		(9,527)
Ending balance	$	91,420	$	9,407	$	142,505	$	29,146	$	11,234	$	283,712
June 30, 2025
Beginning balance	$	94,307	$	10,256	$	143,177	$	18,924	$	8,824	$	275,488
Credit loss expense (benefit)	4,315		(47)		383		3,821		4,994		13,466
Charge-offs	(4,163)		—		(2,639)		(1,292)		(7,290)		(15,384)
Recoveries	1,025		180		2		254		2,772		4,233
Net (charge-offs) recoveries	(3,138)		180		(2,637)		(1,038)		(4,518)		(11,151)
Ending balance	$	95,484	$	10,389	$	140,923	$	21,707	$	9,300	$	277,803

	Commercial and Industrial		Energy		Commercial Real Estate		Consumer Real Estate		Consumer and Other		Total
Six months ended:
June 30, 2026
Beginning balance	$	98,439	$	11,563	$	135,110	$	25,637	$	10,746	$	281,495
Credit loss expense (benefit)	(3,189)		(2,497)		9,490		6,340		7,341		17,485
Charge-offs	(6,053)		(17)		(2,103)		(3,676)		(13,096)		(24,945)
Recoveries	2,223		358		8		845		6,243		9,677
Net (charge-offs) recoveries	(3,830)		341		(2,095)		(2,831)		(6,853)		(15,268)
Ending balance	$	91,420	$	9,407	$	142,505	$	29,146	$	11,234	$	283,712
June 30, 2025
Beginning balance	$	87,569	$	9,992	$	143,205	$	19,106	$	10,279	$	270,151
Credit loss expense (benefit)	14,496		(85)		2,353		4,250		7,480		28,494
Charge-offs	(8,499)		(52)		(4,639)		(2,250)		(14,134)		(29,574)
Recoveries	1,918		534		4		601		5,675		8,732
Net (charge-offs) recoveries	(6,581)		482		(4,635)		(1,649)		(8,459)		(20,842)
Ending balance	$	95,484	$	10,389	$	140,923	$	21,707	$	9,300	$	277,803

Financing Receivable, Gross Charge-Offs By Year of Origination

The following table presents year-to-date gross charge-offs by year of origination as of June 30, 2026.

	2026		2025		2024		2023		2022		Prior		Revolving Loans		Revolving Loans Converted to Term		Total
Commercial and industrial	$	—	$	621	$	246	$	142	$	532	$	187	$	3,148	$	1,177	$	6,053
Energy	—		—		—		—		—		—		—		17		17
Commercial real estate:
Owner occupied	—		37		—		—		257		1,755		—		—		2,049
Non-owner occupied	—		—		—		—		—		—		—		—		—
Construction and land	—		—		—		—		—		21		33		—		54
Consumer real estate	—		—		305		1,014		1,036		272		1,049		—		3,676
Consumer and other	7,720		3,813		124		18		54		—		1,055		312		13,096
Total	$	7,720	$	4,471	$	675	$	1,174	$	1,879	$	2,235	$	5,285	$	1,506	$	24,945

Investment in Loans Related to Allowance for Loan Losses by Portfolio Segment Disaggregated Based on Impairment Methodology

The following table presents loans that were evaluated for expected credit losses on an individual basis and the related specific allocations, by loan portfolio segment, as of June 30, 2026 and December 31, 2025.

	June 30, 2026				December 31, 2025
	Loan Balance		Specific Allocations		Loan Balance		Specific Allocations
Commercial and industrial	$	20,876	$	7,685	$	48,456	$	16,619
Energy	2,523		700		3,023		700
Commercial real estate:
Owner occupied	13,688		722		7,069		722
Non-owner occupied	4,091		—		466		—
Construction	56,054		1,913		1,672		513
Consumer real estate	8,121		1,428		6,140		637
Consumer and other	81		81		81		81
Total	$	105,434	$	12,529	$	66,907	$	19,272