Loans and Leases (Tables)

6 Months Ended

Jun. 30, 2017

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 June 30, 2017 and December 31, 2016:

(Dollars in thousands)	June 30, 2017		December 31, 2016
Non-PCI loans and leases:
Commercial:
Construction and land development	$	740,291	$	649,157
Commercial mortgage	9,301,154		9,026,220
Other commercial real estate	363,339		351,291
Commercial and industrial	2,553,612		2,567,501
Lease financing	853,943		826,270
Other	486,573		340,264
Total commercial loans	14,298,912		13,760,703
Noncommercial:
Residential mortgage	3,305,361		2,889,124
Revolving mortgage	2,678,686		2,601,344
Construction and land development	218,233		231,400
Consumer	1,475,410		1,446,138
Total noncommercial loans	7,677,690		7,168,006
Total non-PCI loans and leases	21,976,602		20,928,709
PCI loans:
Commercial:
Construction and land development	18,660		20,766
Commercial mortgage	426,778		453,013
Other commercial real estate	21,409		12,645
Commercial and industrial	9,307		11,844
Other	903		1,702
Total commercial loans	477,057		499,970
Noncommercial:
Residential mortgage	350,038		268,777
Revolving mortgage	65,949		38,650
Consumer	1,819		1,772
Total noncommercial loans	417,806		309,199
Total PCI loans	894,863		809,169
Total loans and leases	$	22,871,465	$	21,737,878

Composition Of The Loans And Leases Outstanding By Credit Quality Indicator

Non-PCI loans and leases outstanding at June 30, 2017 and December 31, 2016 by credit quality indicator are provided below:

	June 30, 2017
(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	$	733,587	$	9,107,385	$	358,889	$	2,371,181	$	842,476	$	480,223	$	13,893,741
Special mention	960		69,690		1,366		30,180		5,056		992		108,244
Substandard	5,699		123,629		3,084		16,655		6,411		5,358		160,836
Doubtful	45		291		—		6		—		—		342
Ungraded	—		159		—		135,590		—		—		135,749
Total	$	740,291	$	9,301,154	$	363,339	$	2,553,612	$	853,943	$	486,573	$	14,298,912
	December 31, 2016
	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	$	645,232	$	8,821,439	$	347,509	$	2,402,659	$	818,008	$	335,831	$	13,370,678
Special mention	2,236		76,084		1,433		22,804		2,675		1,020		106,252
Substandard	1,683		126,863		2,349		17,870		5,415		3,413		157,593
Doubtful	6		334		—		8		—		—		348
Ungraded	—		1,500		—		124,160		172		—		125,832
Total	$	649,157	$	9,026,220	$	351,291	$	2,567,501	$	826,270	$	340,264	$	13,760,703

	June 30, 2017
	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	$	3,259,647	$	2,656,372	$	215,354	$	1,462,603	$	7,593,976
30-59 days past due	21,478		10,819		1,252		8,179		41,728
60-89 days past due	7,412		3,176		111		2,310		13,009
90 days or greater past due	16,824		8,319		1,516		2,318		28,977
Total	$	3,305,361	$	2,678,686	$	218,233	$	1,475,410	$	7,677,690
	December 31, 2016
	Non-PCI noncommercial loans and leases
	Residential mortgage		Revolving mortgage		Construction and land development		Consumer		Total non-PCI noncommercial loans and leases
Current	$	2,839,045	$	2,576,942	$	229,106	$	1,434,658	$	7,079,751
30-59 days past due	27,760		14,290		1,139		6,775		49,964
60-89 days past due	7,039		2,698		598		2,779		13,114
90 days or greater past due	15,280		7,414		557		1,926		25,177
Total	$	2,889,124	$	2,601,344	$	231,400	$	1,446,138	$	7,168,006

PCI loans outstanding at June 30, 2017 and December 31, 2016 by credit quality indicator are provided below:

	June 30, 2017
(Dollars in thousands)	PCI commercial loans
Grade:	Construction and land development		Commercial mortgage		Other commercial real estate		Commercial and industrial		Other		Total PCI commercial loans
Pass	$	8,004	$	228,746	$	16,998	$	6,605	$	306	$	260,659
Special mention	1,608		58,942		688		646		331		62,215
Substandard	6,511		125,348		3,029		1,764		266		136,918
Doubtful	2,537		13,742		694		264		—		17,237
Ungraded	—		—		—		28		—		28
Total	$	18,660	$	426,778	$	21,409	$	9,307	$	903	$	477,057
	December 31, 2016
	PCI commercial loans
	Construction and land development		Commercial mortgage		Other commercial real estate		Commercial and industrial		Other		Total PCI commercial loans
Pass	$	8,103	$	234,023	$	8,744	$	7,253	$	696	$	258,819
Special mention	950		67,848		102		620		—		69,520
Substandard	7,850		138,312		3,462		3,648		1,006		154,278
Doubtful	3,863		12,830		337		303		—		17,333
Ungraded	—		—		—		20		—		20
Total	$	20,766	$	453,013	$	12,645	$	11,844	$	1,702	$	499,970

	June 30, 2017
	PCI noncommercial loans
(Dollars in thousands)	Residential mortgage		Revolving mortgage		Consumer		Total PCI noncommercial loans
Current	$	305,156	$	60,006	$	1,685	$	366,847
30-59 days past due	10,089		2,033		58		12,180
60-89 days past due	5,420		405		22		5,847
90 days or greater past due	29,373		3,505		54		32,932
Total	$	350,038	$	65,949	$	1,819	$	417,806
	December 31, 2016
	PCI noncommercial loans
	Residential mortgage		Revolving mortgage		Consumer		Total PCI noncommercial loans
Current	$	230,065	$	33,827	$	1,637	$	265,529
30-59 days past due	9,595		618		68		10,281
60-89 days past due	6,528		268		4		6,800
90 days or greater past due	22,589		3,937		63		26,589
Total	$	268,777	$	38,650	$	1,772	$	309,199

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 June 30, 2017 and December 31, 2016 is provided in the table below.

The calculation of days past due begins on the day after payment is due and includes all days through which all required interest or principal has not been paid. 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.

	June 30, 2017
(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	$	954	$	18	$	119	$	1,091	$	739,200	$	740,291
Commercial mortgage	7,696		2,480		11,108		21,284		9,279,870		9,301,154
Other commercial real estate	132		—		642		774		362,565		363,339
Commercial and industrial	7,702		1,808		2,399		11,909		2,541,703		2,553,612
Lease financing	1,879		416		339		2,634		851,309		853,943
Residential mortgage	21,478		7,412		16,824		45,714		3,259,647		3,305,361
Revolving mortgage	10,819		3,176		8,319		22,314		2,656,372		2,678,686
Construction and land development - noncommercial	1,252		111		1,516		2,879		215,354		218,233
Consumer	8,179		2,310		2,318		12,807		1,462,603		1,475,410
Other	441		—		158		599		485,974		486,573
Total non-PCI loans and leases	$	60,532	$	17,731	$	43,742	$	122,005	$	21,854,597	$	21,976,602
	December 31, 2016
	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	$	1,845	$	39	$	286	$	2,170	$	646,987	$	649,157
Commercial mortgage	11,592		2,773		10,329		24,694		9,001,526		9,026,220
Other commercial real estate	310		—		—		310		350,981		351,291
Commercial and industrial	7,918		2,102		1,051		11,071		2,556,430		2,567,501
Lease financing	1,175		444		863		2,482		823,788		826,270
Residential mortgage	27,760		7,039		15,280		50,079		2,839,045		2,889,124
Revolving mortgage	14,290		2,698		7,414		24,402		2,576,942		2,601,344
Construction and land development - noncommercial	1,139		598		557		2,294		229,106		231,400
Consumer	6,775		2,779		1,926		11,480		1,434,658		1,446,138
Other	72		—		198		270		339,994		340,264
Total non-PCI loans and leases	$	72,876	$	18,472	$	37,904	$	129,252	$	20,799,457	$	20,928,709

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 June 30, 2017 and December 31, 2016 for non-PCI loans and leases, were as follows:

	June 30, 2017				December 31, 2016
(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	$	706	$	18	$	606	$	—
Commercial mortgage	26,416		1,072		26,527		482
Other commercial real estate	738		—		86		—
Commercial and industrial	2,474		1,238		4,275		440
Lease financing	900		165		359		683
Residential mortgage	36,712		138		32,470		37
Revolving mortgage	15,844		—		14,308		—
Construction and land development - noncommercial	2,163		—		1,121		—
Consumer	1,919		1,561		2,236		1,076
Other	195		—		319		—
Total non-PCI loans and leases	$	88,067	$	4,192	$	82,307	$	2,718

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 HCB and Guaranty acquisitions 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 dates.

(Dollars in thousands)	HCB		Guaranty
Contractually required payments	$	111,250	$	158,456
Cash flows expected to be collected	101,802		142,000
Fair value of loans at acquisition	85,149		114,533

Changes In Carrying Value Of PCI Loans

The recorded fair values of PCI loans acquired in the HCB and Guaranty acquisitions as of the acquisition dates were as follows:

(Dollars in thousands)	HCB		Guaranty
Commercial:
Construction and land development	$	7,061	$	55
Commercial mortgage	21,836		644
Other commercial real estate	6,404		—
Commercial and industrial	19,675		2
Total commercial loans	54,976		701
Noncommercial:
Residential mortgage	25,857		80,475
Revolving mortgage	3,434		33,319
Construction and land development	—		26
Consumer	882		12
Total noncommercial loans	30,173		113,832
Total PCI loans	$	85,149	$	114,533

The following table provides changes in the carrying value of all purchased credit-impaired loans during the six months ended June 30, 2017 and June 30, 2016:

(Dollars in thousands)	2017			2016
Balance at January 1	$	809,169		$	950,516
Fair value of acquired loans	199,682			80,084
Accretion	39,798			41,821
Payments received and other changes, net	(153,786		)	(150,954		)
Balance at June 30	$	894,863		$	921,467
Unpaid principal balance at June 30	$	1,199,358		$	1,614,998

Changes in Carrying Value of Accretable Yield for PCI Loans

The following table documents changes to the amount of accretable yield for the first six months of 2017 and 2016.

(Dollars in thousands)	2017			2016
Balance at January 1	$	335,074		$	343,856
Additions from acquisitions	44,120			12,279
Accretion	(39,798		)	(41,821		)
Reclassifications from nonaccretable difference	12,328			18,384
Changes in expected cash flows that do not affect nonaccretable difference	(1,405		)	30,239
Balance at June 30	$	350,319		$	362,937

Changes In Carrying Value of Accretable Yield for PCI Loans

Purchased non-PCI loans and leases

The following table relates to purchased non-PCI loans and leases acquired in the Guaranty 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	$	703,916
Cash flows not expected to be collected	16,073
Fair value of loans at acquisition	574,553

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

(Dollars in thousands)
Commercial:
Commercial mortgage	$	850
Commercial and industrial	583
Other	183,816
Total commercial loans	185,249
Noncommercial:
Residential mortgage	309,612
Revolving mortgage	54,780
Consumer	24,912
Total noncommercial loans	389,304
Total non-PCI loans and leases	$	574,553