Loans (Tables)

6 Months Ended

Jun. 30, 2021

Financing Receivable, Credit Quality Indicator - interest written off on nonaccrual loans [Line Items]

Analysis of Loan Portfolio by Major Types of Loans

The Company’s loan portfolio includes originated and purchased loans. The following is an analysis of the loan portfolio by segment and class (net of unearned income):

	June 30, 2021		December 31, 2020
	(dollars in thousands)
Commercial loans:
Commercial real estate	$	4,101,071	$	4,062,313
Commercial business	3,738,288		3,597,968
Agriculture	797,580		779,627
Construction	300,303		268,663
Consumer loans:
One-to-four family residential real estate	724,151		683,570
Other consumer	31,723		35,519
Total loans	9,693,116		9,427,660
Less: Allowance for credit losses	(142,988)		(149,140)
Total loans, net	$	9,550,128	$	9,278,520

Analysis of the Aged Loan Portfolio

The following is an aging of the recorded investment of the loan portfolio at the dates presented:

	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
June 30, 2021	(in thousands)
Commercial loans:
Commercial real estate	$	4,089,659	$	8,244	$	149	$	—	$	8,393	$	3,019	$	4,101,071
Commercial business	3,724,202		2,351		990		—		3,341		10,745		3,738,288
Agriculture	785,071		2,537		938		—		3,475		9,034		797,580
Construction	300,303		—		—		—		—		—		300,303
Consumer loans:
One-to-four family residential real estate	720,854		775		1,343		—		2,118		1,179		724,151
Other consumer	31,658		20		1		—		21		44		31,723
Total	$	9,651,747	$	13,927	$	3,421	$	—	$	17,348	$	24,021	$	9,693,116
	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
December 31, 2020	(in thousands)
Commercial loans:
Commercial real estate	$	4,037,309	$	17,292	$	—	—		$	17,292	$	7,712	$	4,062,313
Commercial business	3,578,905		1,282		4,559		—		5,841		13,222		3,597,968
Agriculture	767,102		911		—		—		911		11,614		779,627
Construction	268,304		—		142		—		142		217		268,663
Consumer loans:
One-to-four family residential real estate	677,627		2,283		1,659		—		3,942		2,001		683,570
Other consumer	35,450		24		5		—		29		40		35,519
Total	$	9,364,697	$	21,792	$	6,365	$	—	$	28,157	$	34,806	$	9,427,660

Interest written off on nonaccrual loans

The following table summarizes written-off interest on nonaccrual loans for the periods indicated:

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in thousands)
Commercial loans	$	212	$	665	$	424	$	1,448
Consumer loans	2		8		9		13
Total	$	214	$	673	$	433	$	1,461

Analysis of Nonaccrual Loans

The following summarizes the amortized cost of nonaccrual loans for which there was no related ACL for the periods indicated:

	June 30, 2021		December 31, 2020
	(in thousands)
Commercial loans:
Commercial real estate	$	942	$	6,393
Commercial business	6,125		6,382
Agriculture	6,744		8,136
Total	$	13,811	$	20,911

Analysis of loans classified as Troubled Debt Restructurings (“TDR”)

The following is an analysis of loans classified as TDR for the periods indicated:

	Three Months Ended June 30, 2021					Three Months Ended June 30, 2020
	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
Commercial loans:
Commercial business	4	$	1,757	$	1,757	4	$	1,690	$	1,690
Consumer loans:
One-to-four family residential real estate	—	—		—		1	128		128
Total	4	$	1,757	$	1,757	5	$	1,818	$	1,818

	Six Months Ended June 30, 2021					Six Months Ended June 30, 2020
	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
Commercial loans:
Commercial real estate	1	$	628	$	628	—	$	—	$	—
Commercial business	11	2,600		2,600		6	1,962		1,962
Agriculture	—	—		—		1	895		895
Consumer loans:
One-to-four family residential real estate	2	140		140		2	196		196
Total	14	$	3,368	$	3,368	9	$	3,053	$	3,053