Loans and Allowance for Credit Losses (Tables)

12 Months Ended

Dec. 31, 2023

Accounts Notes And Loans Receivable [Line Items]

Loans, Net of Unearned Income

The following table presents loans, net of unearned income, by portfolio class at December 31, 2023 and 2022:

	December 31,
($ in thousands)	2023		2022
Commercial non-real estate	$	9,957,284	$	10,146,453
Commercial real estate - owner occupied		3,093,763		3,033,058
Total commercial and industrial		13,051,047		13,179,511
Commercial real estate - income producing		3,986,943		3,560,991
Construction and land development		1,551,091		1,703,592
Residential mortgages		3,886,072		3,092,605
Consumer		1,446,764		1,577,347
Total loans	$	23,921,917	$	23,114,046

Allowance for Credit Losses by Portfolio Class

The following schedules show activity in the allowance for credit losses by portfolio class for the years ended December 31, 2023 and 2022, as well as the corresponding recorded investment in loans at December 31, 2023 and 2022.

	Commercial Non-Real Estate			Commercial Real Estate-Owner Occupied			Total Commercial and Industrial			Commercial Real Estate-Income Producing			Construction and Land Development			Residential Mortgages			Consumer			Total
($ in thousands)	Year Ended December 31, 2023
Allowance for credit losses
Allowance for loan losses:
Beginning balance	$	96,461		$	48,284		$	144,745		$	71,961		$	30,498		$	32,464		$	28,121		$	307,789
Charge-offs		(59,830	)		—			(59,830	)		(73	)		(72	)		(55	)		(15,393	)		(75,423	)
Recoveries		6,152			957			7,109			14			11			1,278			3,611			12,023
Net provision for loan losses		58,954			(9,044	)		49,910			2,637			(3,398	)		5,296			9,073			63,518
Ending balance - allowance for loan losses	$	101,737		$	40,197		$	141,934		$	74,539		$	27,039		$	38,983		$	25,412		$	307,907
Reserve for unfunded lending commitments:
Beginning balance	$	4,984		$	302		$	5,286		$	1,395		$	25,110		$	31		$	1,487		$	33,309
Provision for losses on unfunded    commitments		523			25			548			(51	)		(5,091	)		(1	)		180			(4,415	)
Ending balance - reserve for unfunded    lending commitments	$	5,507		$	327		$	5,834		$	1,344		$	20,019		$	30		$	1,667		$	28,894
Total allowance for credit losses	$	107,244		$	40,524		$	147,768		$	75,883		$	47,058		$	39,013		$	27,079		$	336,801
Allowance for loan losses:
Individually evaluated	$	1,666		$	—		$	1,666		$	—		$	—		$	—		$	—		$	1,666
Collectively evaluated		100,071			40,197			140,268			74,539			27,039			38,983			25,412			306,241
Allowance for loan losses	$	101,737		$	40,197		$	141,934		$	74,539		$	27,039		$	38,983		$	25,412		$	307,907
Reserve for unfunded lending commitments:
Individually evaluated	$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—
Collectively evaluated		5,507			327			5,834			1,344			20,019			30			1,667			28,894
Reserve for unfunded lending commitments	$	5,507		$	327		$	5,834		$	1,344		$	20,019		$	30		$	1,667		$	28,894
Total allowance for credit losses	$	107,244		$	40,524		$	147,768		$	75,883		$	47,058		$	39,013		$	27,079		$	336,801
Loans:
Individually evaluated for impairment	$	15,882		$	—		$	15,882		$	—		$	—		$	—		$	—		$	15,882
Collectively evaluated for impairment		9,941,402			3,093,763			13,035,165			3,986,943			1,551,091			3,886,072			1,446,764			23,906,035
Total loans	$	9,957,284		$	3,093,763		$	13,051,047		$	3,986,943		$	1,551,091		$	3,886,072		$	1,446,764		$	23,921,917

Composition of Nonaccrual Loans and Without an Allowance for Loan Loss by Portfolio Class

The following table shows the composition of nonaccrual loans and those without an allowance for loan loss, by portfolio class.

	December 31,
	2023				2022
($ in thousands)	Total nonaccrual		Nonaccrual without allowance for loan loss		Total nonaccrual		Nonaccrual without allowance for loan loss
Commercial non-real estate	$	20,840	$	13,637	$	4,020	$	941
Commercial real estate - owner occupied		2,228		—		1,461		692
Total commercial and industrial		23,068		13,637		5,481		1,633
Commercial real estate - income producing		461		—		1,240		1,174
Construction and land development		815		—		309		—
Residential mortgages		26,137		—		25,269		1,884
Consumer		8,555		—		6,692		—
Total loans	$	59,036	$	13,637	$	38,991	$	4,691

Provides Detail by Portfolio Class for Reportable MEFDs

The table below presents provide detail by portfolio class for reportable MEFDs entered into during the year ended December 31, 2023.

	Year Ended December 31, 2023
	Term extension					Payment delay					Term extensions and payment delay					Other(1)
($ in thousands)	Balance		Percentage of portfolio			Balance		Percentage of portfolio			Balance		Percentage of portfolio			Balance		Percentage of portfolio
Commercial non-real estate	$	7,930		0.08	%	$	4,274		0.04	%	$	9,753		0.10	%	$	—		—
Commercial real estate - owner occupied		1,774		0.06	%		—		—			—		—			—		—
Total commercial and industrial		9,704		0.07	%		4,274		0.03	%		9,753		0.07	%		—		—
Commercial real estate - income producing		—		—			—		—			—		—			—		—
Construction and land development		85		0.01	%		—		—			—		—			—		—
Residential mortgages		254		0.01	%		—		—			—		—			202		0.01	%
Consumer		78		0.01	%		—		—			196		0.01	%		—		—
Total reportable modified loans	$	10,121		0.04	%	$	4,274		0.02	%	$	9,949		0.04	%	$	202		0.00	%

(1) Includes interest rate reduction and other than insignificant payment delays

Aging Analysis of Reportable Modifications To Borrowers Experiencing Financial Difficulty by Portfolio Class

The table below presents the aging analysis of reportable modifications to borrowers experiencing financial difficulty by portfolio class at December 31, 2023.

December 31, 2023	30-59 days past due		60-89 days past due		Greater than 90 days past due		Total past due		Current		Total reportable modified Loans
(in thousands)
Commercial non-real estate	$	3,149	$	233	$	4,430	$	7,812	$	14,145	$	21,957
Commercial real estate - owner occupied		—		—		—		—		1,774		1,774
Total commercial and industrial		3,149		233		4,430		7,812		15,919		23,731
Commercial real estate - income producing		—		—		—		—		—		—
Construction and land development		—		—		—		—		85		85
Residential mortgages		66		—		—		66		390		456
Consumer		—		—		—		—		274		274
Total reportable modified loans	$	3,215	$	233	$	4,430	$	7,878	$	16,668	$	24,546

Aging Analysis of Past Due Loans by Portfolio Class

The tables below present the aging analysis of past due loans by portfolio class at December 31, 2023 and 2022.

December 31, 2023	30-59 Days Past Due		60-89 Days Past Due		Greater Than 90 Days Past Due		Total Past Due		Current		Total Loans		Recorded Investment > 90 Days and Accruing
($ in thousands)
Commercial non-real estate	$	12,311	$	4,381	$	21,132	$	37,824	$	9,919,460	$	9,957,284	$	5,782
Commercial real estate - owner occupied		1,614		1,596		1,715		4,925		3,088,838		3,093,763		431
Total commercial and industrial		13,925		5,977		22,847		42,749		13,008,298		13,051,047		6,213
Commercial real estate - income producing		3,938		606		408		4,952		3,981,991		3,986,943		—
Construction and land development		1,655		1,220		1,208		4,083		1,547,008		1,551,091		742
Residential mortgages		40,189		9,121		18,960		68,270		3,817,802		3,886,072		172
Consumer		11,059		5,957		6,611		23,627		1,423,137		1,446,764		2,482
Total loans	$	70,766	$	22,881	$	50,034	$	143,681	$	23,778,236	$	23,921,917	$	9,609

December 31, 2022	30-59 Days Past Due		60-89 Days Past Due		Greater Than 90 Days Past Due		Total Past Due		Current		Total Loans		Recorded Investment > 90 Days and Accruing
($ in thousands)
Commercial non-real estate	$	4,050	$	21,329	$	3,418	$	28,797	$	10,117,656	$	10,146,453	$	996
Commercial real estate - owner occupied		19,069		3,346		1,894		24,309		3,008,749		3,033,058		1,623
Total commercial and industrial		23,119		24,675		5,312		53,106		13,126,405		13,179,511		2,619
Commercial real estate - income producing		879		—		1,174		2,053		3,558,938		3,560,991		—
Construction and land development		4,029		242		133		4,404		1,699,188		1,703,592		54
Residential mortgages		28,208		11,056		17,346		56,610		3,035,995		3,092,605		293
Consumer		8,845		2,806		4,407		16,058		1,561,289		1,577,347		1,619
Total loans	$	65,080	$	38,779	$	28,372	$	132,231	$	22,981,815	$	23,114,046	$	4,585

Credit Quality Indicators by Segment and Portfolio Class

The following tables present credit quality disclosures of amortized cost by class and vintage for term loans and by revolving and revolving converted to amortizing at December 31, 2023 and 2022. The Company defines vintage as the later of origination, renewal or restructure date.

	Term Loans														Revolving Loans
December 31, 2023	Amortized Cost Basis by Origination Year												Revolving		Converted to
($ in thousands)	2023		2022		2021		2020		2019		Prior		Loans		Term Loans		Total
Commercial Non-Real Estate:
Pass	$	1,557,202	$	1,812,370	$	1,106,433	$	483,739	$	398,626	$	923,143	$	3,186,189	$	56,316	$	9,524,018
Pass-Watch		30,360		60,228		20,730		8,245		4,988		9,117		94,252		6,291		234,211
Special Mention		411		6,206		936		27		26		836		2,620		424		11,486
Substandard		48,264		48,178		18,882		8,058		3,079		1,660		54,453		4,995		187,569
Doubtful		—		—		—		—		—		—		—		—		—
Total	$	1,636,237	$	1,926,982	$	1,146,981	$	500,069	$	406,719	$	934,756	$	3,337,514	$	68,026	$	9,957,284
Gross Charge-offs	$	7,885	$	1,179	$	1,484	$	27,000	$	81	$	1,750	$	11,971	$	8,480	$	59,830
Commercial Real Estate - Owner Occupied:
Pass	$	374,466	$	689,626	$	620,272	$	501,054	$	284,032	$	493,707	$	40,533	$	12,587	$	3,016,277
Pass-Watch		2,574		9,587		9,654		3,451		8,791		17,581		389		—		52,027
Special Mention		837		—		617		—		110		5,083		—		—		6,647
Substandard		2,322		4,956		967		1,295		584		7,374		1,314		—		18,812
Doubtful		—		—		—		—		—		—		—		—		—
Total	$	380,199	$	704,169	$	631,510	$	505,800	$	293,517	$	523,745	$	42,236	$	12,587	$	3,093,763
Gross Charge-offs	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Commercial Real Estate - Income Producing:
Pass	$	456,334	$	953,501	$	966,402	$	618,003	$	323,344	$	367,010	$	65,486	$	48,924	$	3,799,004
Pass-Watch		9,469		3,064		3,886		75,182		23,827		22,504		2,000		—		139,932
Special Mention		156		32,255		—		354		—		8,061		—		—		40,826
Substandard		4,086		1,921		286		—		122		766		—		—		7,181
Doubtful		—		—		—		—		—		—		—		—		—
Total	$	470,045	$	990,741	$	970,574	$	693,539	$	347,293	$	398,341	$	67,486	$	48,924	$	3,986,943
Gross Charge-offs	$	73	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	73
Construction and Land Development:
Pass	$	388,453	$	676,687	$	248,036	$	62,086	$	6,008	$	18,834	$	139,587	$	2,769	$	1,542,460
Pass-Watch		3,067		2,820		827		83		128		323		212		—		7,460
Special Mention		294		—		—		—		62		—		—		—		356
Substandard		—		87		96		49		9		279		295		—		815
Doubtful		—		—		—		—		—		—		—		—		—
Total	$	391,814	$	679,594	$	248,959	$	62,218	$	6,207	$	19,436	$	140,094	$	2,769	$	1,551,091
Gross Charge-offs	$	—	$	7	$	54	$	—	$	—	$	11	$	—	$	—	$	72
Residential Mortgage:
Performing	$	439,024	$	910,361	$	950,400	$	489,262	$	176,041	$	891,232	$	3,615	$	—	$	3,859,935
Nonperforming		561		2,233		3,260		730		2,366		16,987		—		—		26,137
Total	$	439,585	$	912,594	$	953,660	$	489,992	$	178,407	$	908,219	$	3,615	$	—	$	3,886,072
Gross Charge-offs	$	—	$	—	$	—	$	—	$	—	$	55	$	—	$	—	$	55
Consumer Loans:
Performing	$	75,615	$	59,454	$	36,693	$	28,076	$	31,802	$	39,150	$	1,144,401	$	23,018	$	1,438,209
Nonperforming		176		237		245		438		445		2,528		369		4,117		8,555
Total	$	75,791	$	59,691	$	36,938	$	28,514	$	32,247	$	41,678	$	1,144,770	$	27,135	$	1,446,764
Gross Charge-offs	$	567	$	2,388	$	1,473	$	215	$	573	$	824	$	7,735	$	1,618	$	15,393

	Term Loans														Revolving Loans
December 31, 2022	Amortized Cost Basis by Origination Year												Revolving		Converted to
($ in thousands)	2022		2021		2020		2019		2018		Prior		Loans		Term Loans		Total
Commercial Non-Real Estate:
Pass	$	2,600,656	$	1,450,689	$	679,355	$	569,842	$	267,025	$	763,122	$	3,193,769	$	116,659	$	9,641,117
Pass-Watch		68,307		38,949		31,841		11,757		8,237		49,577		66,339		9,836		284,843
Special Mention		30,276		13,625		2,443		4,406		322		1,654		25,184		2,070		79,980
Substandard		29,667		13,807		11,766		21,667		12,792		1,250		39,213		10,351		140,513
Doubtful		—		—		—		—		—		—		—		—		—
Total	$	2,728,906	$	1,517,070	$	725,405	$	607,672	$	288,376	$	815,603	$	3,324,505	$	138,916	$	10,146,453
Commercial Real Estate - Owner Occupied:
Pass	$	630,121	$	650,742	$	537,849	$	328,364	$	265,437	$	447,707	$	46,730	$	5,107	$	2,912,057
Pass-Watch		7,129		5,299		3,743		13,301		10,872		7,706		893		150		49,093
Special Mention		—		—		544		822		1,231		3,670		—		—		6,267
Substandard		19,899		547		6,715		7,663		7,543		21,465		1,000		809		65,641
Doubtful		—		—		—		—		—		—		—		—		—
Total	$	657,149	$	656,588	$	548,851	$	350,150	$	285,083	$	480,548	$	48,623	$	6,066	$	3,033,058
Commercial Real Estate - Income Producing:
Pass	$	894,522	$	795,378	$	660,235	$	420,435	$	232,145	$	317,446	$	113,487	$	7,000	$	3,440,648
Pass-Watch		1,027		18,070		58,256		20,865		12,066		836		467		—		111,587
Special Mention		235		—		708		2,325		166		376		—		—		3,810
Substandard		415		—		2,785		8		1,240		498		—		—		4,946
Doubtful		—		—		—		—		—		—		—		—		—
Total	$	896,199	$	813,448	$	721,984	$	443,633	$	245,617	$	319,156	$	113,954	$	7,000	$	3,560,991
Construction and Land Development:
Pass	$	663,735	$	711,731	$	148,579	$	9,198	$	15,360	$	10,854	$	128,842	$	2,457	$	1,690,756
Pass-Watch		8,233		1,944		643		559		199		450		69		—		12,097
Special Mention		—		—		—		196		—		—		—		—		196
Substandard		35		55		—		12		61		380		—		—		543
Doubtful		—		—		—		—		—		—		—		—		—
Total	$	672,003	$	713,730	$	149,222	$	9,965	$	15,620	$	11,684	$	128,911	$	2,457	$	1,703,592
Residential Mortgage:
Performing	$	631,339	$	694,104	$	518,705	$	192,431	$	107,675	$	918,918	$	3,147	$	—	$	3,066,319
Nonperforming		1,058		2,434		716		1,196		2,080		18,802		—		—		26,286
Total	$	632,397	$	696,538	$	519,421	$	193,627	$	109,755	$	937,720	$	3,147	$	—	$	3,092,605
Consumer Loans:
Performing	$	103,742	$	58,248	$	45,641	$	62,715	$	41,559	$	40,489	$	1,212,958	$	4,834	$	1,570,186
Nonperforming		193		198		228		758		381		3,341		459		1,603		7,161
Total	$	103,935	$	58,446	$	45,869	$	63,473	$	41,940	$	43,830	$	1,213,417	$	6,437	$	1,577,347

Total Commercial [Member]

Accounts Notes And Loans Receivable [Line Items]

Credit Quality Indicators by Segment and Portfolio Class

The following tables present the credit quality indicators by segment and portfolio class of loans at December 31, 2023 and December 31, 2022.

	December 31, 2023
($ in thousands)	Commercial Non- Real Estate		Commercial Real Estate - Owner Occupied		Total Commercial and Industrial		Commercial Real Estate - Income Producing		Construction and Land Development		Total Commercial
Grade:
Pass	$	9,524,018	$	3,016,277	$	12,540,295	$	3,799,004	$	1,542,460	$	17,881,759
Pass-Watch		234,211		52,027		286,238		139,932		7,460		433,630
Special Mention		11,486		6,647		18,133		40,826		356		59,315
Substandard		187,569		18,812		206,381		7,181		815		214,377
Doubtful		—		—		—		—		—		—
Total	$	9,957,284	$	3,093,763	$	13,051,047	$	3,986,943	$	1,551,091	$	18,589,081

	December 31, 2022
($ in thousands)	Commercial Non- Real Estate		Commercial Real Estate - Owner Occupied		Total Commercial and Industrial		Commercial Real Estate - Income Producing		Construction and Land Development		Total Commercial
Grade:
Pass	$	9,641,117	$	2,912,057	$	12,553,174	$	3,440,648	$	1,690,756	$	17,684,578
Pass-Watch		284,843		49,093		333,936		111,587		12,097		457,620
Special Mention		79,980		6,267		86,247		3,810		196		90,253
Substandard		140,513		65,641		206,154		4,946		543		211,643
Doubtful		—		—		—		—		—		—
Total	$	10,146,453	$	3,033,058	$	13,179,511	$	3,560,991	$	1,703,592	$	18,444,094

Residential Mortgage and Consumer [Member]

Accounts Notes And Loans Receivable [Line Items]

Credit Quality Indicators by Segment and Portfolio Class

	December 31, 2023						December 31, 2022
($ in thousands)	Residential Mortgage		Consumer		Total		Residential Mortgage		Consumer		Total
Performing	$	3,859,935	$	1,438,209	$	5,298,144	$	3,066,319	$	1,570,186	$	4,636,505
Nonperforming		26,137		8,555		34,692		26,286		7,161		33,447
Total	$	3,886,072	$	1,446,764	$	5,332,836	$	3,092,605	$	1,577,347	$	4,669,952