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Loans and Allowance for Credit Losses (Tables)

9 Months Ended

Sep. 30, 2024

Receivables [Abstract]

Types of Loans in Loan Portfolio

The loan portfolio consists of various types of loans and is categorized by major type as follows:

		September 30, 2024				December 31, 2023
		(Dollars in thousands)
Residential mortgage loans held for sale		$	6,113			$	5,734
Commercial and industrial			2,543,632				2,305,040
Real estate:
Construction, land development and other land loans			2,814,521				3,076,591
1-4 family residential (includes home equity)			8,471,421				8,162,344
Commercial real estate (includes multi-family residential)			5,869,687				5,662,948
Farmland			703,599				598,898
Agriculture			329,625				217,145
Consumer and other			413,548				329,593
Total loans held for investment, excluding Warehouse Purchase Program			21,146,033				20,352,559
Warehouse Purchase Program			1,228,706				822,245
Total loans, including Warehouse Purchase Program		$	22,380,852			$	21,180,538

Related Party Loans

An analysis of activity with respect to these related party loans is as follows:

		As of and for the nine months ended September 30, 2024				As of and for the year ended December 31, 2023
		(Dollars in thousands)
Beginning balance on January 1		$	292			$	547
New loans			4				64
Repayments			(22	)			(319	)
Ending balance		$	274			$	292

Aging Analysis of Past Due Loans

An aging analysis of past due loans, segregated by category of loan, is presented below:

		September 30, 2024
		Loans Past Due and Still Accruing
		30-89 Days				90 or More Days				Total Past Due Loans				Nonaccrual Loans				Current Loans				Total Loans
		(Dollars in thousands)
Construction, land development and other land loans		$	10,953			$	—			$	10,953			$	1,848			$	2,801,720			$	2,814,521
Warehouse Purchase Program loans			—				—				—				—				1,228,706				1,228,706
Agriculture and agriculture real estate (includes farmland)			15,202				—				15,202				2,686				1,015,336				1,033,224
1-4 family (includes home equity) (1)			44,032				—				44,032				34,611				8,398,891				8,477,534
Commercial real estate (includes multi-family residential)			7,678				—				7,678				31,685				5,830,324				5,869,687
Commercial and industrial			16,530				—				16,530				13,080				2,514,022				2,543,632
Consumer and other			3,410				20				3,430				59				410,059				413,548
Total		$	97,805			$	20			$	97,825			$	83,969			$	22,199,058			$	22,380,852

		December 31, 2023
		Loans Past Due and Still Accruing
		30-89 Days				90 or More Days				Total Past Due Loans				Nonaccrual Loans				Current Loans				Total Loans
		(Dollars in thousands)
Construction, land development and other land loans		$	21,627			$	1,635			$	23,262			$	14,770			$	3,038,559			$	3,076,591
Warehouse Purchase Program loans			—				—				—				—				822,245				822,245
Agriculture and agriculture real estate (includes farmland)			8,572				—				8,572				1,460				806,011				816,043
1-4 family (includes home equity) (1)			38,350				130				38,480				25,694				8,103,904				8,168,078
Commercial real estate (includes multi-family residential)			23,511				—				23,511				18,662				5,620,775				5,662,948
Commercial and industrial			14,782				430				15,212				8,066				2,281,762				2,305,040
Consumer and other			503				—				503				36				329,054				329,593
Total		$	107,345			$	2,195			$	109,540			$	68,688			$	21,002,310			$	21,180,538

(1)Includes $6.1 million and $5.7 million of residential mortgage loans held for sale at September 30, 2024 and December 31, 2023, respectively.

Non-performing Assets

The following table presents information regarding nonperforming assets as of the dates indicated:

		September 30, 2024				December 31, 2023
		(Dollars in thousands)
Nonaccrual loans (1) (2)		$	83,969			$	68,688
Accruing loans 90 or more days past due			20				2,195
Total nonperforming loans			83,989				70,883
Repossessed assets			177				76
Other real estate			5,757				1,708
Total nonperforming assets		$	89,923			$	72,667
Nonperforming assets to total loans and other real estate			0.40	%			0.34	%
Nonperforming assets to total loans, excluding Warehouse Purchase Program loans, and other real estate			0.43	%			0.36	%
Nonaccrual loans to total loans			0.38	%			0.32	%
Nonaccrual loans to total loans, excluding Warehouse Purchase Program loans			0.40	%			0.34	%

(1)ASU 2022-02 became effective for the Company on January 1, 2023.

(2)There were no nonperforming Warehouse Purchase Program loans or Warehouse Purchase Program lines of credit for the periods presented.

Recorded Investment and Outstanding Balance for Purchased Credit Deteriorated Loans and Non Purchased Credit Deteriorated Loans

The recorded investment in PCD loans included in the consolidated balance sheet and the related outstanding balance as of the dates indicated are presented in the table below. The outstanding balance represents the total amount owed as of September 30, 2024 and December 31, 2023.

		September 30, 2024				December 31, 2023
		(Dollars in thousands)
PCD loans:
Outstanding balance		$	468,657			$	533,653
Discount			(8,274	)			(7,914	)
Recorded investment		$	460,383			$	525,739

The recorded investment in Non-PCD loans included in the consolidated balance sheet and the related outstanding balance as of the dates indicated are presented in the table below. The outstanding balance represents the total amount owed as of September 30, 2024 and December 31, 2023.

		September 30, 2024				December 31, 2023
		(Dollars in thousands)
Non-PCD loans:
Outstanding balance		$	2,314,275			$	1,823,809
Discount			(30,612	)			(19,992	)
Recorded investment		$	2,283,663			$	1,803,817

Summary of Changes in Accretable Yields of Acquired Loans

Changes in the accretable yield for acquired PCD loans for the three and nine months ended September 30, 2024 and 2023 were as follows:

		Three Months Ended September 30,								Nine Months Ended September 30,
		2024				2023				2024				2023
		(Dollars in thousands)
Balance at beginning of period		$	9,507			$	10,110			$	7,914			$	3,361
Additions			—				—				4,558				8,336
Adjustments			(21	)			—				(44	)			(70	)
Accretion			(1,212	)			(767	)			(4,154	)			(2,284	)
Balance at September 30,		$	8,274			$	9,343			$	8,274			$	9,343

Changes in the discount accretion for Non-PCD loans for the three and nine months ended September 30, 2024 and 2023 were as follows:

		Three Months Ended September 30,								Nine Months Ended September 30,
		2024				2023				2024				2023
		(Dollars in thousands)
Balance at beginning of period		$	34,250			$	23,052			$	19,992			$	2,233
Additions			—				—				20,378				22,593
Adjustments			(22	)			(1	)			(33	)			(1	)
Accretion			(3,616	)			(1,508	)			(9,725	)			(3,282	)
Balance at September 30,		$	30,612			$	21,543			$	30,612			$	21,543

Risk Grade by Category of Loan and Year of Origination/Renewal

The following tables present loans by risk grade, by category of loan and year of origination/renewal at September 30, 2024.

		Term Loans
		Amortized Cost Basis by Origination Year
		2024				2023				2022				2021				2020				Prior				Revolving Loans				Revolving Loans Converted to Term Loans				Total
		(Dollars in thousands)
Construction, Land Development and Other Land Loans
Grade 1		$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—
Grade 2			—				921				157				—				—				13				—				—				1,091
Grade 3			410,166				611,667				537,443				265,630				122,745				42,038				110,971				8,869				2,109,529
Grade 4			32,881				111,188				167,799				77,493				64,818				28,277				19,451				17,224				519,131
Grade 5			66				14				3,037				—				33,234				15,627				795				—				52,773
Grade 6			—				—				—				7,317				179				492				—				—				7,988
Grade 7			—				—				104				116				—				66				223				—				509
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			8,441				20,022				53,663				9,561				4,688				6,655				20,470				—				123,500
Total		$	451,554			$	743,812			$	762,203			$	360,117			$	225,664			$	93,168			$	151,910			$	26,093			$	2,814,521
Current-period gross write-offs		$	—			$	377			$	109			$	—			$	—			$	—			$	—			$	—			$	486
Agriculture and Agriculture Real Estate (includes Farmland)
Grade 1		$	1,132			$	540			$	975			$	85			$	183			$	405			$	10,047			$	12			$	13,379
Grade 2			—				247				60				57				—				683				—				—				1,047
Grade 3			143,498				122,082				193,582				86,595				50,888				107,228				120,427				142				824,442
Grade 4			14,626				20,545				15,681				26,758				6,167				12,127				27,780				28				123,712
Grade 5			1,048				57				730				782				—				1,120				—				—				3,737
Grade 6			—				—				2,844				74				—				1,165				—				—				4,083
Grade 7			—				—				1,419				199				—				207				—				—				1,825
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			18,047				1,874				15,708				2,034				3,410				2,731				17,195				—				60,999
Total		$	178,351			$	145,345			$	230,999			$	116,584			$	60,648			$	125,666			$	175,449			$	182			$	1,033,224
Current-period gross write-offs		$	—			$	—			$	109			$	62			$	339			$	121			$	—			$	—			$	631
1-4 Family (includes Home Equity) (1)
Grade 1		$	—			$	73			$	147			$	—			$	108			$	—			$	—			$	—			$	328
Grade 2			—				404				1,144				148				—				2,316				—				—				4,012
Grade 3			310,005				1,252,218				2,353,241				2,100,201				971,979				1,186,914				96,313				879				8,271,750
Grade 4			7,511				17,291				22,220				27,744				8,463				66,167				3,862				—				153,258
Grade 5			—				693				1,364				—				1,162				1,886				76				—				5,181
Grade 6			—				19				374				—				17				1,431				—				—				1,841
Grade 7			—				3,135				9,833				5,506				4,401				11,383				125				—				34,383
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			336				972				2,771				470				517				1,715				—				—				6,781
Total		$	317,852			$	1,274,805			$	2,391,094			$	2,134,069			$	986,647			$	1,271,812			$	100,376			$	879			$	8,477,534
Current-period gross write-offs		$	—			$	93			$	1,024			$	116			$	33			$	70			$	—			$	—			$	1,336

		Term Loans
		Amortized Cost Basis by Origination Year
		2024				2023				2022				2021				2020				Prior				Revolving Loans				Revolving Loans Converted to Term Loans				Total
		(Dollars in thousands)
Commercial Real Estate (includes Multi-Family Residential)
Grade 1		$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—
Grade 2			—				—				1,070				—				435				2,020				—				—				3,525
Grade 3			192,738				422,199				926,952				727,824				413,895				1,129,802				51,405				253				3,865,068
Grade 4			7,229				66,531				302,535				239,074				227,702				587,942				15,455				—				1,446,468
Grade 5			—				2,325				7,558				7,190				21,762				152,210				—				—				191,045
Grade 6			—				597				2,376				339				15,619				93,984				—				—				112,915
Grade 7			—				2,426				781				1,064				1,568				3,536				50				—				9,425
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			—				42,731				72,240				40,220				16,477				69,244				329				—				241,241
Total		$	199,967			$	536,809			$	1,313,512			$	1,015,711			$	697,458			$	2,038,738			$	67,239			$	253			$	5,869,687
Current-period gross write-offs		$	—			$	—			$	167			$	481			$	—			$	160			$	—			$	—			$	808
Commercial and Industrial
Grade 1		$	42,831			$	11,280			$	7,730			$	3,498			$	2,165			$	4,698			$	46,472			$	155			$	118,829
Grade 2			2,202				3,252				7,255				148				118				3,361				6,207				—				22,543
Grade 3			250,903				183,975				190,192				135,024				54,337				167,734				1,014,305				1,813				1,998,283
Grade 4			39,698				67,267				30,184				6,092				8,340				35,539				99,458				1,470				288,048
Grade 5			27,340				—				20,765				195				1,356				5,925				12,224				—				67,805
Grade 6			391				132				3,528				540				256				24				4,032				—				8,903
Grade 7			62				3,470				632				5,321				810				1,001				110				—				11,406
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			1,883				1,492				7,541				2,114				45				3,307				11,433				—				27,815
Total		$	365,310			$	270,868			$	267,827			$	152,932			$	67,427			$	221,589			$	1,194,241			$	3,438			$	2,543,632
Current-period gross write-offs		$	169			$	642			$	1,435			$	1,144			$	1,336			$	604			$	2,953			$	—			$	8,283
Consumer and Other
Grade 1		$	15,257			$	8,483			$	4,208			$	2,382			$	1,335			$	4,662			$	2,592			$	9			$	38,928
Grade 2			110,341				12,559				14,179				41				54				1,800				20,006				—				158,980
Grade 3			36,451				32,464				34,686				19,401				10,015				14,235				44,456				1				191,709
Grade 4			—				1,566				246				1,018				14,924				2,494				3,332				—				23,580
Grade 5			—				—				—				—				—				—				250				—				250
Grade 6			—				—				—				—				—				—				—				—				—
Grade 7			—				6				—				—				3				—				—				45				54
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			—				—				—				23				—				9				15				—				47
Total		$	162,049			$	55,078			$	53,319			$	22,865			$	26,331			$	23,200			$	70,651			$	55			$	413,548
Current-period gross write-offs		$	3,999			$	208			$	56			$	27			$	53			$	305			$	62			$	5			$	4,715

		Term Loans
		Amortized Cost Basis by Origination Year
		2024				2023				2022				2021				2020				Prior				Revolving Loans				Revolving Loans Converted to Term Loans				Total
		(Dollars in thousands)
Warehouse Purchase Program
Grade 1		$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—
Grade 2			—				—				—				—				—				—				—				—				—
Grade 3			1,228,706				—				—				—				—				—				—				—				1,228,706
Grade 4			—				—				—				—				—				—				—				—				—
Grade 5			—				—				—				—				—				—				—				—				—
Grade 6			—				—				—				—				—				—				—				—				—
Grade 7			—				—				—				—				—				—				—				—				—
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			—				—				—				—				—				—				—				—				—
Total		$	1,228,706			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	1,228,706
Current-period gross write-offs		$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—
Total
Grade 1		$	59,220			$	20,376			$	13,060			$	5,965			$	3,791			$	9,765			$	59,111			$	176			$	171,464
Grade 2			112,543				17,383				23,865				394				607				10,193				26,213				—				191,198
Grade 3			2,572,467				2,624,605				4,236,096				3,334,675				1,623,859				2,647,951				1,437,877				11,957				18,489,487
Grade 4			101,945				284,388				538,665				378,179				330,414				732,546				169,338				18,722				2,554,197
Grade 5			28,454				3,089				33,454				8,167				57,514				176,768				13,345				—				320,791
Grade 6			391				748				9,122				8,270				16,071				97,096				4,032				—				135,730
Grade 7			62				9,037				12,769				12,206				6,782				16,193				508				45				57,602
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			28,707				67,091				151,923				54,422				25,137				83,661				49,442				—				460,383
Total		$	2,903,789			$	3,026,717			$	5,018,954			$	3,802,278			$	2,064,175			$	3,774,173			$	1,759,866			$	30,900			$	22,380,852
Current-period gross write-offs		$	4,168			$	1,320			$	2,900			$	1,830			$	1,761			$	1,260			$	3,015			$	5			$	16,259

(1)Includes $6.1 million of residential mortgage loans held for sale at September 30, 2024.

Allowance for Credit Losses on Loans by Category of Loan

The following table details activity in the allowance for credit losses on loans by category of loan for the three and nine months ended September 30, 2024 and 2023.

		Construction, Land Development and Other Land Loans				Agriculture and Agriculture Real Estate (includes Farmland)				1-4 Family (includes Home Equity)				Commercial Real Estate (includes Multi-Family Residential)				Commercial and Industrial				Consumer and Other				Total
		(Dollars in thousands)
Allowance for credit losses on loans:
Three Months Ended
Balance June 30, 2024		$	76,776			$	29,479			$	80,689			$	95,728			$	70,112			$	7,068			$	359,852
Provision for credit losses on loans			(633	)			(450	)			1,442				(921	)			(2,216	)			2,778				—
Charge-offs			(378	)			(109	)			(442	)			(297	)			(3,746	)			(1,568	)			(6,540	)
Recoveries			—				225				33				39				437				351				1,085
Net (charge-offs) recoveries			(378	)			116				(409	)			(258	)			(3,309	)			(1,217	)			(5,455	)
Balance September 30, 2024		$	75,765			$	29,145			$	81,722			$	94,549			$	64,587			$	8,629			$	354,397
Nine Months Ended
Balance December 31, 2023		$	87,775			$	11,380			$	77,652			$	88,664			$	59,832			$	7,059			$	332,362
Initial allowance on loans purchased with credit deterioration			942				14,309				344				4,306				6,176				1				26,078
Provision for credit losses			(12,467	)			3,577				5,017				1,439				4,948				5,409				7,923
Charge-offs			(486	)			(631	)			(1,336	)			(808	)			(8,283	)			(4,715	)			(16,259	)
Recoveries			1				510				45				948				1,914				875				4,293
Net (charge-offs) recoveries			(485	)			(121	)			(1,291	)			140				(6,369	)			(3,840	)			(11,966	)
Balance September 30, 2024		$	75,765			$	29,145			$	81,722			$	94,549			$	64,587			$	8,629			$	354,397
Allowance for credit losses on loans:
Three Months Ended
Balance June 30, 2023		$	91,858			$	11,254			$	67,722			$	86,765			$	81,970			$	5,640			$	345,209
Initial allowance on loans purchased with credit deterioration			1,641				—				—				4,290				3,763				—				9,694
Provision for credit losses on loans			1,437				149				3,932				(4,554	)			(2,455	)			1,491				—
Charge-offs			—				—				(20	)			(584	)			(1,961	)			(1,550	)			(4,115	)
Recoveries			5				—				98				14				367				223				707
Net (charge-offs) recoveries			5				—				78				(570	)			(1,594	)			(1,327	)			(3,408	)
Balance September 30, 2023		$	94,941			$	11,403			$	71,732			$	85,931			$	81,684			$	5,804			$	351,495
Nine Months Ended
Balance December 31, 2022		$	78,853			$	7,699			$	60,795			$	66,272			$	62,319			$	5,638			$	281,576
Initial allowance on loans purchased with credit deterioration			16,878				2,914				1,590				25,292				30,095				24				76,793
Provision for credit losses			(758	)			706				9,059				9,893				(10,448	)			3,532				11,984
Charge-offs			(77	)			(113	)			(121	)			(15,559	)			(3,203	)			(4,066	)			(23,139	)
Recoveries			45				197				409				33				2,921				676				4,281
Net (charge-offs) recoveries			(32	)			84				288				(15,526	)			(282	)			(3,390	)			(18,858	)
Balance September 30, 2023		$	94,941			$	11,403			$	71,732			$	85,931			$	81,684			$	5,804			$	351,495

Rollforward of Allowance for Credit Losses on Off-Balance Sheet Credit Exposures

The following table represents a rollforward of the allowance for credit losses on off-balance sheet credit exposures for the three and nine months ended September 30, 2024 and 2023.

		Three Months Ended September 30,								Nine Months Ended September 30,
		2024				2023				2024				2023
		(Dollars in thousands)
Balance at beginning of period		$	37,646			$	36,503			$	36,503			$	29,947
Provision for credit losses on off-balance sheet credit exposures			—				—				1,143				6,556
Balance at end of period		$	37,646			$	36,503			$	37,646			$	36,503

Schedule of Amortized Cost of Loans Experiencing Financial Difficulty and Modified

The following table displays the amortized cost of loans that were both experiencing financial difficulty and modified during the three and nine months ended September 30, 2024 and 2023, presented by category of loan and type of modification.

		Payment Delay				Term Extension				Interest Rate Reduction				Total				Percent of Total Class of Loans
		(Dollars in thousands)
Three Months Ended September 30, 2024
Construction, land development and other land loans		$	—			$	7,163			$	—			$	7,163				0.3	%
Agriculture			—				950				—				950				0.3	%
Total		$	—			$	8,113			$	—			$	8,113				0.0	%
Nine Months Ended September 30, 2024
Commercial and industrial		$	—			$	2,768			$	—			$	2,768				0.1	%
Construction, land development and other land loans			—				7,163				—				7,163				0.3	%
Agriculture			—				12,600				—				12,600				3.8	%
Total		$	—			$	22,531			$	—			$	22,531				0.1	%

		Payment Delay				Term Extension				Interest Rate Reduction				Total				Percent of Total Class of Loans
		(Dollars in thousands)
Three Months Ended September 30, 2023
Commercial and industrial		$	—			$	5,639			$	—			$	5,639				0.2	%
Commercial real estate (includes multi-family residential)			—				—				6,922				6,922				0.1	%
Agriculture			—				419				—				419				0.2	%
Total		$	—			$	6,058			$	6,922			$	12,980				0.1	%
Nine Months Ended September 30, 2023
Commercial and industrial		$	—			$	5,639			$	292			$	5,931				0.2	%
Construction, land development and other land loans			—				6,054				—				6,054				0.2	%
Commercial real estate (includes multi-family residential)			1,294				—				6,922				8,216				0.1	%
Agriculture			—				419				—				419				0.2	%
Total		$	1,294			$	12,112			$	7,214			$	20,620				0.1	%

Schedule of Loan Modifications

The following table describes the modifications made to the loans presented above to borrowers experiencing financial difficulty for the three and nine months ended September 30, 2024 and 2023.

Term Extension
Loan Type		Three Months Ended September 30, 2024		Nine Months Ended September 30, 2024
Commercial and industrial		̶̶̶		Short-term extensions; modification to a 7 year term
Construction, land development and other land loans		Short-term extension		Short-term extension
Agriculture		Modified to a 2 year term		Modified to a 2 year term

Payment Delay
Loan Type		Three Months Ended September 30, 2023		Nine Months Ended September 30, 2023
Commercial real estate (includes multi-family residential)		̶̶̶		Short-term principal deferral
Term Extension
Loan Type		Three Months Ended September 30, 2023		Nine Months Ended September 30, 2023
Commercial and industrial		Short-term extension		Short-term extension
Construction, land development and other land loans		̶̶̶		Short-term extension
Agriculture		Short-term extension		Short-term extension
Interest Rate Reduction
Loan Type		Three Months Ended September 30, 2023		Nine Months Ended September 30, 2023
Commercial and industrial		̶̶̶		Reduced contractual interest rate
Commercial real estate (includes multi-family residential)		Reduced contractual interest rate		Reduced contractual interest rate

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