Loans and Leases (Tables)

9 Months Ended

Sep. 30, 2018

Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]

Loans And Leases Outstanding

Loans and leases outstanding included the following at September 30, 2018 and December 31, 2017:

(Dollars in thousands)	September 30, 2018		December 31, 2017
Non-PCI loans and leases:
Commercial:
Construction and land development	$	679,203	$	669,215
Commercial mortgage	10,486,372		9,729,022
Other commercial real estate	471,532		473,433
Commercial and industrial	3,189,337		2,730,407
Lease financing	616,951		894,801
Other	296,988		302,176
Total commercial loans	15,740,383		14,799,054
Noncommercial:
Residential mortgage	4,073,235		3,523,786
Revolving mortgage	2,570,096		2,701,525
Construction and land development	241,436		248,289
Consumer	1,623,179		1,561,173
Total noncommercial loans	8,507,946		8,034,773
Total non-PCI loans and leases	24,248,329		22,833,827
PCI loans:
Total PCI loans	638,018		762,998
Total loans and leases	$	24,886,347	$	23,596,825

Composition Of The Loans And Leases Outstanding By Credit Quality Indicator

Non-PCI loans and leases outstanding at September 30, 2018 and December 31, 2017 by credit quality indicator are provided below:

	September 30, 2018
(Dollars in thousands)	Non-PCI commercial loans and leases
Grade:	Construction  and land development		Commercial mortgage		Other commercial real estate		Commercial  and industrial		Lease financing		Other		Total non-PCI commercial loans and leases
Pass	$	675,138	$	10,287,536	$	466,685	$	2,948,053	$	611,413	$	294,358	$	15,283,183
Special mention	1,333		95,843		2,311		35,171		2,382		1,038		138,078
Substandard	2,566		101,384		2,536		25,489		3,156		1,592		136,723
Doubtful	—		969		—		390		—		—		1,359
Ungraded	166		640		—		180,234		—		—		181,040
Total	$	679,203	$	10,486,372	$	471,532	$	3,189,337	$	616,951	$	296,988	$	15,740,383
	December 31, 2017
	Non-PCI commercial loans and leases
	Construction  and land development		Commercial mortgage		Other commercial real estate		Commercial  and industrial		Lease financing		Other		Total non-PCI commercial loans and leases
Pass	$	665,197	$	9,521,019	$	468,942	$	2,511,307	$	883,779	$	298,064	$	14,348,308
Special mention	691		78,643		1,260		44,130		4,340		2,919		131,983
Substandard	3,327		128,848		3,224		18,617		6,585		1,193		161,794
Doubtful	—		262		—		385		—		—		647
Ungraded	—		250		7		155,968		97		—		156,322
Total	$	669,215	$	9,729,022	$	473,433	$	2,730,407	$	894,801	$	302,176	$	14,799,054

	September 30, 2018
	Non-PCI noncommercial loans and leases
(Dollars in thousands)	Residential mortgage		Revolving mortgage		Construction and land development		Consumer		Total non-PCI noncommercial loans and leases
Current	$	4,027,341	$	2,539,576	$	239,601	$	1,608,644	$	8,415,162
30-59 days past due	24,558		14,378		151		7,911		46,998
60-89 days past due	5,189		5,354		177		3,621		14,341
90 days or greater past due	16,147		10,788		1,507		3,003		31,445
Total	$	4,073,235	$	2,570,096	$	241,436	$	1,623,179	$	8,507,946
	December 31, 2017
	Non-PCI noncommercial loans and leases
	Residential mortgage		Revolving mortgage		Construction and land development		Consumer		Total non-PCI noncommercial loans and leases
Current	$	3,465,935	$	2,674,390	$	239,648	$	1,546,473	$	7,926,446
30-59 days past due	27,886		13,428		7,154		8,812		57,280
60-89 days past due	8,064		3,485		108		2,893		14,550
90 days or greater past due	21,901		10,222		1,379		2,995		36,497
Total	$	3,523,786	$	2,701,525	$	248,289	$	1,561,173	$	8,034,773

PCI loans outstanding at September 30, 2018 and December 31, 2017 by credit quality indicator are provided below:

	September 30, 2018		December 31, 2017
(Dollars in thousands)	PCI commercial loans
Grade:
Pass	$	156,092	$	201,332
Special mention	52,204		63,257
Substandard	103,986		117,068
Doubtful	4,701		11,735
Ungraded	31		27
Total	$	317,014	$	393,419

	September 30, 2018		December 31, 2017
	PCI noncommercial loans
(Dollars in thousands)
Current	$	282,965	$	318,632
30-59 days past due	10,138		13,343
60-89 days past due	5,968		6,212
90 days or greater past due	21,933		31,392
Total	$	321,004	$	369,579

Aging Of The Outstanding Loans And Leases By Class Excluding Loans Impaired At Acquisition Date

The aging of the outstanding non-PCI loans and leases, by class, at September 30, 2018 and December 31, 2017 are provided in the tables below. Loans and leases 30 days or less past due are considered current as various grace periods allow borrowers to make payments within a stated period after the due date and still remain in compliance with the loan agreement.

	September 30, 2018
(Dollars in thousands)	30-59 days past due		60-89 days past due		90 days or greater		Total past due		Current		Total loans and leases
Non-PCI loans and leases:
Construction and land development - commercial	$	708	$	186	$	68	$	962	$	678,241	$	679,203
Commercial mortgage	15,768		2,830		5,326		23,924		10,462,448		10,486,372
Other commercial real estate	—		—		—		—		471,532		471,532
Commercial and industrial	8,078		2,592		2,140		12,810		3,176,527		3,189,337
Lease financing	3,090		102		928		4,120		612,831		616,951
Residential mortgage	24,558		5,189		16,147		45,894		4,027,341		4,073,235
Revolving mortgage	14,378		5,354		10,788		30,520		2,539,576		2,570,096
Construction and land development - noncommercial	151		177		1,507		1,835		239,601		241,436
Consumer	7,911		3,621		3,003		14,535		1,608,644		1,623,179
Other	141		63		—		204		296,784		296,988
Total non-PCI loans and leases	$	74,783	$	20,114	$	39,907	$	134,804	$	24,113,525	$	24,248,329
	December 31, 2017
	30-59 days past due		60-89 days past due		90 days or greater		Total past due		Current		Total loans and leases
Non-PCI loans and leases:
Construction and land development - commercial	$	491	$	442	$	357	$	1,290	$	667,925	$	669,215
Commercial mortgage	12,288		2,375		6,490		21,153		9,707,869		9,729,022
Other commercial real estate	107		—		75		182		473,251		473,433
Commercial and industrial	6,694		1,510		1,266		9,470		2,720,937		2,730,407
Lease financing	2,983		167		973		4,123		890,678		894,801
Residential mortgage	27,886		8,064		21,901		57,851		3,465,935		3,523,786
Revolving mortgage	13,428		3,485		10,222		27,135		2,674,390		2,701,525
Construction and land development - noncommercial	7,154		108		1,379		8,641		239,648		248,289
Consumer	8,812		2,893		2,995		14,700		1,546,473		1,561,173
Other	188		6		133		327		301,849		302,176
Total non-PCI loans and leases	$	80,031	$	19,050	$	45,791	$	144,872	$	22,688,955	$	22,833,827

Recorded Investment, By Class, In Loans And Leases On Nonaccrual Status And Loans And Leases Greater Than 90 Days Past Due And Still Accruing

The recorded investment, by class, in loans and leases on nonaccrual status, and loans and leases greater than 90 days past due and still accruing at September 30, 2018 and December 31, 2017 for non-PCI loans and leases, were as follows:

	September 30, 2018				December 31, 2017
(Dollars in thousands)	Nonaccrual loans and leases		Loans and leases > 90 days and accruing		Nonaccrual loans and leases		Loans and leases > 90 days and accruing
Non-PCI loans and leases:
Construction and land development - commercial	$	382	$	55	$	1,040	$	—
Commercial mortgage	19,009		—		22,625		397
Other commercial real estate	91		—		916		—
Commercial and industrial	3,533		439		2,884		428
Lease financing	1,105		—		1,992		—
Residential mortgage	33,796		—		38,942		—
Revolving mortgage	23,231		—		19,990		—
Construction and land development - noncommercial	1,912		—		1,989		—
Consumer	2,230		2,146		1,992		2,153
Other	130		—		164		—
Total non-PCI loans and leases	$	85,419	$	2,640	$	92,534	$	2,978

Schedule of Contractually Required Payments Including Principal and Interest Expected Cash Flows to be Collected and Fair Values [Table Text Block]

The following table relates to PCI loans acquired in the HomeBancorp transaction and summarizes the contractually required payments, which include principal and interest, expected cash flows to be collected and the fair value of PCI loans at the acquisition date.

(Dollars in thousands)
Contractually required payments	$	26,651
Cash flows expected to be collected	19,697
Fair value of loans at acquisition	15,555

Changes In Carrying Value Of PCI Loans

The recorded fair values of PCI loans acquired in the HomeBancorp transaction as of the acquisition date are as follows:

(Dollars in thousands)
Commercial:
Commercial mortgage	$	7,815
Commercial and industrial	423
Total commercial loans	8,238
Noncommercial:
Residential mortgage	7,317
Total noncommercial loans	7,317
Total PCI loans	$	15,555

The following table provides changes in the carrying value of all PCI loans during the nine months ended September 30, 2018 and September 30, 2017:

(Dollars in thousands)	2018			2017
Balance at January 1	$	762,998		$	809,169
Fair value of acquired loans	15,555			199,682
Accretion	45,699			59,039
Payments received and other changes, net	(186,234		)	(233,723		)
Balance at September 30	$	638,018		$	834,167
Unpaid principal balance at September 30	$	999,926		$	1,293,760

Changes in Carrying Value of Accretable Yield for PCI Loans

The following table documents changes to the amount of accretable yield for the first nine months of 2018 and 2017.

(Dollars in thousands)	2018			2017
Balance at January 1	$	316,679		$	335,074
Additions from acquisitions	4,142			44,120
Accretion	(45,699		)	(59,039		)
Reclassifications from nonaccretable difference	5,866			16,947
Changes in expected cash flows that do not affect nonaccretable difference	42,214			4,596
Balance at September 30	$	323,202		$	341,698

Changes In Carrying Value of Accretable Yield for PCI Loans

The following table relates to purchased non-PCI loans acquired in the HomeBancorp transaction and provides the contractually required payments, estimate of contractual cash flows not expected to be collected and fair value of the acquired loans at the acquisition date.

(Dollars in thousands)
Contractually required payments	$	710,876
Contractual cash flows not expected to be collected	9,845
Fair value at acquisition date	550,618

The recorded fair values of purchased non-PCI loans acquired in the HomeBancorp transaction as of the acquisition date are as follows:

(Dollars in thousands)
Commercial:
Construction and land development	$	525
Commercial mortgage	188,688
Other commercial real estate	55,183
Commercial and industrial	7,931
Total commercial loans	252,327
Noncommercial:
Residential mortgage	296,273
Revolving mortgage	51
Consumer	1,967
Total noncommercial loans	298,291
Total non-PCI loans	$	550,618