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Loans and Allowance for Credit Losses (Tables)

6 Months Ended

Jun. 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:

		June 30, 2024				December 31, 2023
		(Dollars in thousands)
Residential mortgage loans held for sale		$	9,951			$	5,734
Commercial and industrial			2,644,271				2,305,040
Real estate:
Construction, land development and other land loans			2,828,372				3,076,591
1-4 family residential (includes home equity)			8,416,962				8,162,344
Commercial real estate (includes multi-family residential)			5,961,884				5,662,948
Farmland			694,103				598,898
Agriculture			343,258				217,145
Consumer and other			340,611				329,593
Total loans held for investment, excluding Warehouse Purchase Program			21,229,461				20,352,559
Warehouse Purchase Program			1,081,403				822,245
Total loans, including Warehouse Purchase Program		$	22,320,815			$	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 six months ended June 30, 2024				As of and for the year ended December 31, 2023
		(Dollars in thousands)
Beginning balance on January 1		$	292			$	547
New loans			2				64
Repayments			(12	)			(319	)
Ending balance		$	282			$	292

Aging Analysis of Past Due Loans

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

		June 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		$	16,728			$	55			$	16,783			$	2,504			$	2,809,085			$	2,828,372
Warehouse Purchase Program loans			—				—				—				—				1,081,403				1,081,403
Agriculture and agriculture real estate (includes farmland)			5,473				—				5,473				2,550				1,029,338				1,037,361
1-4 family (includes home equity) (1)			40,339				—				40,339				32,408				8,354,166				8,426,913
Commercial real estate (includes multi-family residential)			8,583				—				8,583				31,064				5,922,237				5,961,884
Commercial and industrial			14,459				100				14,559				15,575				2,614,137				2,644,271
Consumer and other			1,082				167				1,249				74				339,288				340,611
Total		$	86,664			$	322			$	86,986			$	84,175			$	22,149,654			$	22,320,815

		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 $10.0 million and $5.7 million of residential mortgage loans held for sale at June 30, 2024 and December 31, 2023, respectively.

Non-performing Assets

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

		June 30, 2024				December 31, 2023
		(Dollars in thousands)
Nonaccrual loans (1) (2)		$	84,175			$	68,688
Accruing loans 90 or more days past due			322				2,195
Total nonperforming loans			84,497				70,883
Repossessed assets			113				76
Other real estate			4,960				1,708
Total nonperforming assets		$	89,570			$	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			0.42	%			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 June 30, 2024 and December 31, 2023.

		June 30, 2024				December 31, 2023
		(Dollars in thousands)
PCD loans:
Outstanding balance		$	512,235			$	533,653
Discount			(9,507	)			(7,914	)
Recorded investment		$	502,728			$	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 June 30, 2024 and December 31, 2023.

		June 30, 2024				December 31, 2023
		(Dollars in thousands)
Non-PCD loans:
Outstanding balance		$	2,447,866			$	1,823,809
Discount			(34,250	)			(19,992	)
Recorded investment		$	2,413,616			$	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 six months ended June 30, 2024 and 2023 were as follows:

		Three Months Ended June 30,								Six Months Ended June 30,
		2024				2023				2024				2023
		(Dollars in thousands)
Balance at beginning of period		$	7,361			$	3,022			$	7,914			$	3,361
Additions			4,558				8,336				4,558				8,336
Adjustments			(18	)			(70	)			(23	)			(70	)
Accretion			(2,394	)			(1,178	)			(2,942	)			(1,517	)
Balance at June 30,		$	9,507			$	10,110			$	9,507			$	10,110

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

		Three Months Ended June 30,								Six Months Ended June 30,
		2024				2023				2024				2023
		(Dollars in thousands)
Balance at beginning of period		$	18,681			$	1,701			$	19,992			$	2,233
Additions			20,378				22,593				20,378				22,593
Adjustments			(12	)			—				(11	)			—
Accretion			(4,797	)			(1,242	)			(6,109	)			(1,774	)
Balance at June 30,		$	34,250			$	23,052			$	34,250			$	23,052

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 June 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			—				1,096				163				—				—				14				—				—				1,273
Grade 3			266,862				699,907				597,832				295,308				125,102				47,761				99,061				10,049				2,141,882
Grade 4			13,666				100,506				169,491				80,180				64,039				27,682				29,883				5,931				491,378
Grade 5			—				277				1,371				—				23,351				15,687				729				—				41,415
Grade 6			—				—				—				7,319				182				534				—				—				8,035
Grade 7			—				—				—				122				—				290				236				—				648
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			2,736				25,624				74,957				7,805				4,725				7,456				20,438				—				143,741
Total		$	283,264			$	827,410			$	843,814			$	390,734			$	217,399			$	99,424			$	150,347			$	15,980			$	2,828,372
Current-period gross write-offs		$	—			$	—			$	109			$	—			$	—			$	—			$	—			$	—			$	109
Agriculture and Agriculture Real Estate (includes Farmland)
Grade 1		$	1,424			$	668			$	1,020			$	149			$	189			$	285			$	9,334			$	—			$	13,069
Grade 2			—				248				60				99				—				703				—				—				1,110
Grade 3			111,732				136,370				195,650				91,013				53,071				114,853				135,023				107				837,819
Grade 4			9,426				28,468				15,968				26,932				4,403				7,956				22,138				403				115,694
Grade 5			1,513				57				263				273				—				1,693				—				—				3,799
Grade 6			—				—				2,879				76				—				1,180				—				—				4,135
Grade 7			—				—				1,643				—				—				27				—				—				1,670
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			17,467				2,064				3,464				2,052				15,330				2,457				17,231				—				60,065
Total		$	141,562			$	167,875			$	220,947			$	120,594			$	72,993			$	129,154			$	183,726			$	510			$	1,037,361
Current-period gross write-offs		$	—			$	—			$	—			$	62			$	339			$	121			$	—			$	—			$	522
1-4 Family (includes Home Equity) (1)
Grade 1		$	—			$	74			$	150			$	—			$	108			$	—			$	—			$	—			$	332
Grade 2			—				520				1,220				150				229				2,468				—				—				4,587
Grade 3			232,171				1,214,696				2,337,634				2,125,250				996,797				1,245,564				90,447				1,880				8,244,439
Grade 4			5,391				15,839				15,636				23,121				6,049				63,434				3,354				—				132,824
Grade 5			—				—				1,195				—				119				2,488				—				—				3,802
Grade 6			—				20				508				214				19				1,087				—				—				1,848
Grade 7			—				1,598				8,550				5,698				4,715				10,735				127				—				31,423
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			358				1,780				2,476				652				520				1,872				—				—				7,658
Total		$	237,920			$	1,234,527			$	2,367,369			$	2,155,085			$	1,008,556			$	1,327,648			$	93,928			$	1,880			$	8,426,913
Current-period gross write-offs		$	—			$	44			$	719			$	28			$	33			$	70			$	—			$	—			$	894

		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		$	750			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	750
Grade 2			—				—				1,099				—				447				2,126				—				—				3,672
Grade 3			138,227				432,631				949,365				744,603				431,915				1,163,658				52,323				2,786				3,915,508
Grade 4			6,410				93,937				281,422				230,332				242,150				699,644				15,056				—				1,568,951
Grade 5			—				190				7,142				5,472				18,209				87,917				855				—				119,785
Grade 6			—				597				2,039				1,487				15,845				81,440				—				—				101,408
Grade 7			—				2,451				511				574				1,644				2,445				50				—				7,675
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			2,183				45,824				68,714				41,362				17,130				68,593				329				—				244,135
Total		$	147,570			$	575,630			$	1,310,292			$	1,023,830			$	727,340			$	2,105,823			$	68,613			$	2,786			$	5,961,884
Current-period gross write-offs		$	—			$	—			$	135			$	216			$	—			$	160			$	—			$	—			$	511
Commercial and Industrial
Grade 1		$	32,263			$	13,062			$	8,512			$	4,247			$	2,440			$	4,755			$	40,230			$	162			$	105,671
Grade 2			1,795				3,490				7,740				330				118				3,381				6,405				—				23,259
Grade 3			238,629				210,865				227,348				143,904				58,515				180,042				1,073,239				2,412				2,134,954
Grade 4			29,512				40,041				31,376				14,748				8,787				79,560				74,197				1,124				279,345
Grade 5			100				54				21,336				185				1,445				384				7,562				—				31,066
Grade 6			402				293				3,755				568				279				26				3,945				—				9,268
Grade 7			69				3,869				884				5,281				1,245				1,291				715				289				13,643
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			1,145				2,755				13,944				2,444				205				2,285				22,550				1,737				47,065
Total		$	303,915			$	274,429			$	314,895			$	171,707			$	73,034			$	271,724			$	1,228,843			$	5,724			$	2,644,271
Current-period gross write-offs		$	—			$	70			$	728			$	1,054			$	929			$	126			$	1,629			$	—			$	4,536
Consumer and Other
Grade 1		$	9,742			$	10,637			$	4,730			$	2,726			$	1,759			$	4,860			$	2,588			$	—			$	37,042
Grade 2			6,505				12,721				14,216				41				—				1,819				7				—				35,309
Grade 3			38,092				38,425				36,725				24,044				10,670				16,081				80,826				174				245,037
Grade 4			—				1,658				252				1,062				15,118				2,179				2,823				—				23,092
Grade 5			—				—				—				—				—				—				—				—				—
Grade 6			—				—				—				—				—				—				—				—				—
Grade 7			—				8				—				—				—				14				45				—				67
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			—				—				—				31				5				12				16				—				64
Total		$	54,339			$	63,449			$	55,923			$	27,904			$	27,552			$	24,965			$	86,305			$	174			$	340,611
Current-period gross write-offs		$	2,649			$	25			$	54			$	24			$	53			$	279			$	62			$	—			$	3,146

		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			1,081,403				—				—				—				—				—				—				—				1,081,403
Grade 4			—				—				—				—				—				—				—				—				—
Grade 5			—				—				—				—				—				—				—				—				—
Grade 6			—				—				—				—				—				—				—				—				—
Grade 7			—				—				—				—				—				—				—				—				—
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			—				—				—				—				—				—				—				—				—
Total		$	1,081,403			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	1,081,403
Current-period gross write-offs		$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—			$	—
Total
Grade 1		$	44,179			$	24,441			$	14,412			$	7,122			$	4,496			$	9,900			$	52,152			$	162			$	156,864
Grade 2			8,300				18,075				24,498				620				794				10,511				6,412				—				69,210
Grade 3			2,107,116				2,732,894				4,344,554				3,424,122				1,676,070				2,767,959				1,530,919				17,408				18,601,042
Grade 4			64,405				280,449				514,145				376,375				340,546				880,455				147,451				7,458				2,611,284
Grade 5			1,613				578				31,307				5,930				43,124				108,169				9,146				—				199,867
Grade 6			402				910				9,181				9,664				16,325				84,267				3,945				—				124,694
Grade 7			69				7,926				11,588				11,675				7,604				14,802				1,173				289				55,126
Grade 8			—				—				—				—				—				—				—				—				—
Grade 9			—				—				—				—				—				—				—				—				—
PCD Loans			23,889				78,047				163,555				54,346				37,915				82,675				60,564				1,737				502,728
Total		$	2,249,973			$	3,143,320			$	5,113,240			$	3,889,854			$	2,126,874			$	3,958,738			$	1,811,762			$	27,054			$	22,320,815
Current-period gross write-offs		$	2,649			$	139			$	1,745			$	1,384			$	1,354			$	756			$	1,691			$	—			$	9,718

(1)Includes $10.0 million of residential mortgage loans held for sale at June 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 six months ended June 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 March 31, 2024		$	82,158			$	12,627			$	79,664			$	87,213			$	61,616			$	6,941			$	330,219
Initial allowance on loans purchased with credit deterioration			942				14,309				344				4,306				6,176				1				26,078
Provision for credit losses on loans			(6,215	)			2,757				1,106				3,828				5,097				1,350				7,923
Charge-offs			(109	)			(400	)			(433	)			(511	)			(3,176	)			(1,488	)			(6,117	)
Recoveries			—				186				8				892				399				264				1,749
Net (charge-offs) recoveries			(109	)			(214	)			(425	)			381				(2,777	)			(1,224	)			(4,368	)
Balance June 30, 2024		$	76,776			$	29,479			$	80,689			$	95,728			$	70,112			$	7,068			$	359,852
Six 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			(11,834	)			4,027				3,575				2,360				7,164				2,631				7,923
Charge-offs			(109	)			(522	)			(894	)			(511	)			(4,536	)			(3,146	)			(9,718	)
Recoveries			2				285				12				909				1,476				523				3,207
Net (charge-offs) recoveries			(107	)			(237	)			(882	)			398				(3,060	)			(2,623	)			(6,511	)
Balance June 30, 2024		$	76,776			$	29,479			$	80,689			$	95,728			$	70,112			$	7,068			$	359,852
Allowance for credit losses on loans:
Three Months Ended
Balance March 31, 2023		$	80,561			$	8,061			$	62,538			$	67,972			$	57,296			$	5,763			$	282,191
Initial allowance on loans purchased with credit deterioration			15,237				2,914				1,590				21,002				26,332				24				67,099
Provision for credit losses on loans			(3,890	)			201				3,524				12,748				(1,498	)			899				11,984
Charge-offs			(77	)			(113	)			(36	)			(14,975	)			(341	)			(1,291	)			(16,833	)
Recoveries			27				191				106				18				181				245				768
Net (charge-offs) recoveries			(50	)			78				70				(14,957	)			(160	)			(1,046	)			(16,065	)
Balance June 30, 2023		$	91,858			$	11,254			$	67,722			$	86,765			$	81,970			$	5,640			$	345,209
Six 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			15,237				2,914				1,590				21,002				26,332				24				67,099
Provision for credit losses			(2,195	)			557				5,127				14,447				(7,993	)			2,041				11,984
Charge-offs			(77	)			(113	)			(101	)			(14,975	)			(1,242	)			(2,516	)			(19,024	)
Recoveries			40				197				311				19				2,554				453				3,574
Net charge-offs			(37	)			84				210				(14,956	)			1,312				(2,063	)			(15,450	)
Balance June 30, 2023		$	91,858			$	11,254			$	67,722			$	86,765			$	81,970			$	5,640			$	345,209

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 six months ended June 30, 2024 and 2023.

		Three Months Ended June 30,								Six Months Ended June 30,
		2024				2023				2024				2023
		(Dollars in thousands)
Balance at beginning of period		$	36,503			$	29,947			$	36,503			$	29,947
Provision for credit losses on off-balance sheet credit exposures			1,143				6,556				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 six months ended June 30, 2024 and 2023, presented by category of loan and type of modification.

		Payment Delay				Term Extension				Interest Rate Reduction				Total				Percentage of Total Loans Held for Investment
		(Dollars in thousands)
Three Months Ended June 30, 2024
Commercial and industrial		$	—			$	2,489			$	—			$	2,489				0.01	%
Agriculture			—				650				—				650				0.00	%
Total		$	—			$	3,139			$	—			$	3,139				0.01	%
Six Months Ended June 30, 2024
Commercial and industrial		$	—			$	2,902			$	—			$	2,902				0.02	%
Agriculture			—				11,650				—				11,650				0.05	%
Total		$	—			$	14,552			$	—			$	14,552				0.07	%

		Payment Delay				Term Extension				Interest Rate Reduction				Total				Percentage of Total Loans Held for Investment
		(Dollars in thousands)
Three Months Ended June 30, 2023
Commercial and industrial		$	—							$	304			$	304				0.00	%
Construction, land development and other land loans			—				1,175				—				1,175				0.01	%
Commercial real estate (includes multi-family residential)			1,294												1,294				0.01	%
Total		$	1,294			$	1,175			$	304			$	2,773				0.02	%
Six Months Ended June 30, 2023
Commercial and industrial		$	—			$	—			$	304			$	304				0.00	%
Construction, land development and other land loans			—				5,408				—				5,408				0.03	%
Commercial real estate (includes multi-family residential)			1,294				—				—				1,294				0.01	%
Total		$	1,294			$	5,408			$	304			$	7,006				0.04	%

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 six months ended June 30, 2024 and 2023.

Term Extension
Loan Type		Three Months Ended June 30, 2024		Six Months Ended June 30, 2024
Commercial and industrial		Short-term extensions		Short-term extensions; modification to a 7 year term
Agriculture		Modified to a 2 year term		Modified to a 2 year term

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

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