Loans and Leases (Tables)

12 Months Ended

Dec. 31, 2016

Loans and Leases Receivable Disclosure [Abstract]

Loans And Leases Outstanding

Loans and leases outstanding include the following at December 31, 2016 and 2015:

(Dollars in thousands)	December 31, 2016		December 31, 2015
Non-PCI loans and leases:
Commercial:
Construction and land development	$	649,157	$	620,352
Commercial mortgage	9,026,220		8,274,548
Other commercial real estate	351,291		321,021
Commercial and industrial	2,567,501		2,368,958
Lease financing	826,270		730,778
Other	340,264		314,832
Total commercial loans	13,760,703		12,630,489
Noncommercial:
Residential mortgage	2,889,124		2,695,985
Revolving mortgage	2,601,344		2,523,106
Construction and land development	231,400		220,073
Consumer	1,446,138		1,219,821
Total noncommercial loans	7,168,006		6,658,985
Total non-PCI loans and leases	20,928,709		19,289,474
PCI loans:
Commercial:
Construction and land development	20,766		33,880
Commercial mortgage	453,013		525,468
Other commercial real estate	12,645		17,076
Commercial and industrial	11,844		15,182
Other	1,702		2,008
Total commercial loans	499,970		593,614
Noncommercial:
Residential mortgage	268,777		302,158
Revolving mortgage	38,650		52,471
Consumer	1,772		2,273
Total noncommercial loans	309,199		356,902
Total PCI loans	809,169		950,516
Total loans and leases	$	21,737,878	$	20,239,990

Composition Of The Loans And Leases Outstanding By Credit Quality Indicator

The composition of the loans and leases outstanding at December 31, 2016, and December 31, 2015, by credit quality indicator is provided below:

	December 31, 2016
(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	$	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
	December 31, 2015
	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	$	611,314	$	8,024,831	$	318,187	$	2,219,606	$	719,338	$	311,401	$	12,204,677
Special mention	5,191		100,220		475		19,361		4,869		1,905		132,021
Substandard	3,847		146,071		959		21,322		6,375		1,526		180,100
Doubtful	—		599		—		408		169		—		1,176
Ungraded	—		2,827		1,400		108,261		27		—		112,515
Total	$	620,352	$	8,274,548	$	321,021	$	2,368,958	$	730,778	$	314,832	$	12,630,489

	December 31, 2016
	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	$	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
	December 31, 2015
	Non-PCI noncommercial loans and leases
	Residential mortgage		Revolving mortgage		Construction and land development		Consumer		Total non-PCI noncommercial loans and leases
Current	$	2,651,209	$	2,502,065	$	214,555	$	1,210,832	$	6,578,661
30-59 days past due	23,960		11,706		3,211		5,545		44,422
60-89 days past due	7,536		3,704		669		1,822		13,731
90 days or greater past due	13,280		5,631		1,638		1,622		22,171
Total	$	2,695,985	$	2,523,106	$	220,073	$	1,219,821	$	6,658,985

	December 31, 2016
(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	$	8,103	$	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
	December 31, 2015
	PCI commercial loans
	Construction and land development		Commercial mortgage		Other commercial real estate		Commercial and industrial		Other		Total PCI commercial loans
Pass	$	14,710	$	262,579	$	7,366	$	9,302	$	706	$	294,663
Special mention	758		87,870		60		937		—		89,625
Substandard	14,131		163,801		9,229		4,588		1,302		193,051
Doubtful	4,281		10,875		—		282		—		15,438
Ungraded	—		343		421		73		—		837
Total	$	33,880	$	525,468	$	17,076	$	15,182	$	2,008	$	593,614

	December 31, 2016
	PCI noncommercial loans
(Dollars in thousands)	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
	December 31, 2015
	PCI noncommercial loans
	Residential mortgage		Revolving mortgage		Consumer		Total PCI noncommercial loans
Current	$	257,207	$	47,901	$	1,981	$	307,089
30-59 days past due	12,318		1,127		86		13,531
60-89 days past due	4,441		501		132		5,074
90 days or greater past due	28,192		2,942		74		31,208
Total	$	302,158	$	52,471	$	2,273	$	356,902

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 December 31, 2016, and December 31, 2015 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 that allow borrowers to make payments within a stated period after the due date and still remain in compliance with the loan agreement.

	December 31, 2016
(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	$	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
	December 31, 2015
	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	$	987	$	283	$	463	$	1,733	$	618,619	$	620,352
Commercial mortgage	13,023		3,446		14,495		30,964		8,243,584		8,274,548
Other commercial real estate	884		—		142		1,026		319,995		321,021
Commercial and industrial	2,133		1,079		1,780		4,992		2,363,966		2,368,958
Lease financing	2,070		2		164		2,236		728,542		730,778
Residential mortgage	23,960		7,536		13,280		44,776		2,651,209		2,695,985
Revolving mortgage	11,706		3,704		5,631		21,041		2,502,065		2,523,106
Construction and land development - noncommercial	3,211		669		1,638		5,518		214,555		220,073
Consumer	5,545		1,822		1,622		8,989		1,210,832		1,219,821
Other	3		164		134		301		314,531		314,832
Total non-PCI loans and leases	$	63,522	$	18,705	$	39,349	$	121,576	$	19,167,898	$	19,289,474

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 December 31, 2016 and December 31, 2015 for non-PCI loans, were as follows:

	December 31, 2016				December 31, 2015
(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	$	606	$	—	$	425	$	273
Commercial mortgage	26,527		482		42,116		242
Other commercial real estate	86		—		239		—
Commercial and industrial	4,275		440		6,235		953
Lease financing	359		683		389		—
Residential mortgage	32,470		37		29,977		838
Revolving mortgage	14,308		—		12,704		—
Construction and land development - noncommercial	1,121		—		2,164		—
Consumer	2,236		1,076		1,472		1,007
Other	319		—		133		2
Total non-PCI loans and leases	$	82,307	$	2,718	$	95,854	$	3,315

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 purchased non-PCI loans and leases acquired in the Cordia transaction during 2016 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)	2016
Contractually required payments	$	296,529
Contractual cash flows not expected to be collected	$	2,678
Fair value at acquisition date	$	241,392

The following table relates to PCI loans acquired in the NMSB and FCSB acquisitions for 2016 and the CCBT acquisition for 2015. The table 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 respective acquisition dates.

(Dollars in thousands)	2016		2015
Contractually required payments	$	108,649	$	247,812
Cash flows expected to be collected	$	93,178	$	207,688
Fair value of loans at acquisition	$	80,690	$	154,496

Changes In Carrying Value Of Acquired Impaired Loans

The recorded fair values of PCI loans acquired in the NMSB, FCSB and CCBT transactions as of their respective acquisition date were as follows:

(Dollars in thousands)	2016		2015
Commercial:
Construction and land development	$	684	$	4,116
Commercial mortgage	50,372		129,732
Other commercial real estate	2,629		3,202
Commercial and industrial	3,630		2,844
Other	1,619		—
Total commercial loans	58,934		139,894
Noncommercial:
Residential mortgage	18,934		13,251
Revolving mortgage	1,238		—
Construction and land development	340		—
Consumer	1,244		1,351
Total noncommercial loans	21,756		14,602
Total PCI loans	$	80,690	$	154,496

The following table provides changes in the carrying value of PCI loans during the years ended December 31, 2016 and 2015:

(Dollars in thousands)	2016			2015
Balance at January 1	$	950,516		$	1,186,498
Fair value of PCI loans acquired during the year	80,690			154,496
Accretion	76,565			114,580
Payments received and other changes, net	(298,602		)	(505,058		)
Balance at December 31	$	809,169		$	950,516
Unpaid principal balance at December 31	$	1,266,395		$	1,693,372

Changes In The Amount Of Accretable Yield

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

(Dollars in thousands)	2016
Commercial:
Construction and land development	$	3,066
Commercial mortgage	77,455
Other commercial real estate	22,174
Commercial and industrial	31,773
Total commercial loans and leases	134,468
Noncommercial:
Residential mortgage	16,839
Revolving mortgage	9,867
Consumer	80,218
Total noncommercial loans and leases	106,924
Total non-PCI loans	$	241,392