Loans and Allowance for Loan Losses (Tables)

9 Months Ended

Sep. 30, 2016

Accounts, Notes, Loans and Financing Receivable [Line Items]

Loans, Net of Unearned Income

	September 30,		December 31,
(in thousands)	2016		2015
Commercial non-real estate	$	7,133,928	$	6,995,824
Commercial real estate - owner occupied		1,901,825		1,859,469
Total commercial & industrial		9,035,753		8,855,293
Commercial real estate - income producing		1,990,309		1,553,082
Construction and land development		946,592		1,151,950
Residential mortgages		2,037,162		2,049,524
Consumer		2,061,005		2,093,465
Total loans	$	16,070,821	$	15,703,314

Allowance for Loan Losses by Portfolio Class

			Commercial				Commercial
	Commercial		real estate-		Total		real estate-		Construction
		non-real	owner		commercial &		income		and land		Residential
(in thousands)	estate		occupied		industrial		producing		development		mortgages		Consumer		Total
	Nine Months Ended September 30, 2016
Allowance for loan  losses:
Beginning balance	$	109,428	$	9,858	$	119,286	$	6,041	$	5,642	$	25,353	$	24,857	$	181,179
Purchased credit impaired activity:
Charge-offs		—		(28)		(28)		(1)		(18)		(91)		(8)		(146)
Recoveries		76		163		239		2		98		33		112		484
Net provision for loan losses		54		(140)		(86)		(436)		(253)		1,685		(1,633)		(723)
(Decrease) increase in FDIC loss share receivable		(2)		—		(2)		—		—		(3,341)		316		(3,027)
Non-purchased credit impaired activity:
Charge-offs		(27,504)		(1,660)		(29,164)		(191)		(827)		(908)		(17,403)		(48,493)
Recoveries		2,709		287		2,996		673		1,422		497		4,272		9,860
Net provision for loan losses		74,500		2,303		76,803		4,862		(216)		964		14,514		96,927
Ending balance	$	159,261	$	10,783	$	170,044	$	10,950	$	5,848	$	24,192	$	25,027	$	236,061
Ending balance:
Allowance:
Individually evaluated for impairment	$	20,665	$	223	$	20,888	$	57	$	6	$	94	$	85	$	21,130
Amounts related to purchased credit impaired loans		574		1,088		1,662		279		484		15,949		1,334		19,708
Collectively evaluated for impairment		138,022		9,472		147,494		10,614		5,358		8,149		23,608		195,223
Total allowance	$	159,261	$	10,783	$	170,044	$	10,950	$	5,848	$	24,192	$	25,027	$	236,061
Loans:
Individually evaluated for impairment	$	235,039	$	6,458	$	241,497	$	7,655	$	2,062	$	3,864	$	1,485	$	256,563
Purchased credit impaired loans		11,534		16,417		27,951		8,087		8,436		145,273		12,045		201,792
Collectively evaluated for impairment		6,887,355		1,878,950		8,766,305		1,974,567		936,094		1,888,025		2,047,475		15,612,466
Total loans	$	7,133,928	$	1,901,825		9,035,753	$	1,990,309	$	946,592	$	2,037,162	$	2,061,005	$	16,070,821

			Commercial				Commercial
	Commercial		real estate-		Total		real estate-		Construction
	non-real		owner		commercial &		income		and land		Residential
(in thousands)	estate		occupied		industrial		producing		development		mortgages		Consumer		Total
	Nine Months ended September 30, 2015
Allowance for loan  losses:
Beginning balance	$	51,169	$	13,536	$	64,705	$	7,546	$	6,421	$	28,660	$	21,430	$	128,762
Purchased credit impaired activity:
Charge-offs		(1,425)		(379)		(1,804)		(2,353)		(406)		(748)		(140)		(5,451)
Recoveries		1,699		937		2,636		20		896		5		185		3,742
Net provision for loan losses		(950)		(1,614)		(2,564)		994		235		1,181		(1,232)		(1,386)
Increase (decrease) in FDIC loss share receivable		314		(396)		(82)		919		(6)		(2,718)		(97)		(1,984)
Non-purchased credit impaired activity:
Charge-offs		(3,068)		(664)		(3,732)		(464)		(1,483)		(1,451)		(10,431)		(17,561)
Recoveries		2,589		249		2,838		386		2,006		578		3,418		9,226
Net provision for loan losses		13,594		2,436		16,030		(1,915)		(289)		283		10,119		24,228
Ending balance	$	63,922	$	14,105	$	78,027	$	5,133	$	7,374	$	25,790	$	23,252	$	139,576
Ending balance:
Allowance:
Individually evaluated for impairment	$	5,588	$	2,723	$	8,311	$	187	$	21	$	96	$	3	$	8,618
Amounts related to purchased credit impaired loans		549		1,304		1,853		885		1,727		18,329		2,711		25,505
Collectively evaluated for impairment		57,785		10,078		67,863		4,061		5,626		7,365		20,538		105,453
Total allowance	$	63,922	$	14,105	$	78,027	$	5,133	$	7,374	$	25,790	$	23,252	$	139,576
Loans:
Individually evaluated for impairment	$	75,345	$	21,465	$	96,810	$	12,520	$	2,053	$	903	$	157	$	112,443
Purchased credit impaired loans		13,158		21,674		34,832		15,280		16,336		170,033		13,424		249,905
Collectively evaluated for impairment		6,257,491		1,800,015		8,057,506		1,456,432		1,067,196		1,842,853		1,976,715		14,400,702
Total loans	$	6,345,994	$	1,843,154		8,189,148	$	1,484,232	$	1,085,585	$	2,013,789	$	1,990,296	$	14,763,050

Composition of Nonaccrual Loans by Portfolio Class

	September 30,		December 31,
(in thousands)	2016		2015
Commercial non-real estate	$	240,298	$	88,743
Commercial real estate - owner occupied		15,331		10,001
Total commercial & industrial		255,629		98,744
Commercial real estate - income producing		9,318		10,815
Construction and land development		4,930		17,294
Residential mortgages		21,181		23,799
Consumer		11,752		9,061
Total loans	$	302,810	$	159,713

Troubled Debt Restructurings Modified by Portfolio Class

	Nine Months Ended
($ in thousands)		September 30, 2016						September 30, 2015
			Pre-Modification		Post-Modification				Pre-Modification		Post-Modification
			Outstanding		Outstanding				Outstanding		Outstanding
		Number of	Recorded		Recorded			Number of	Recorded		Recorded
Troubled Debt Restructurings:		Contracts	Investment		Investment		Contracts		Investment		Investment
Commercial non-real estate		17	$	57,915	$	57,915		—	$	—	$	—
Commercial real estate - owner occupied		—		—		—		—		—		—
Total commercial & industrial		17		57,915		57,915		—		—		—
Commercial real estate - income producing		—		—		—		1		482		482
Construction and land development		—		—		—		—		—		—
Residential mortgages		6		532		532		4		185		185
Consumer		—		—		—		1		20		20
Total loans		23	$	58,447	$	58,447		6	$	687	$	687

Loans Individually Evaluated for Impairment Disaggregated by Portfolio Class

	September 30, 2016
		Recorded investment		Recorded investment		Unpaid
(in thousands)		without an allowance		with an allowance		principal balance		Related allowance
Commercial non-real estate	$	118,527	$	116,512	$	247,732	$	20,665
Commercial real estate - owner occupied		4,351		2,107		6,850		223
Total commercial & industrial		122,878		118,619		254,582		20,888
Commercial real estate - income producing		5,654		2,001		7,882		57
Construction and land development		1,228		834		2,905		6
Residential mortgages		2,908		956		4,382		94
Consumer		—		1,485		1,485		85
Total loans	$	132,668	$	123,895	$	271,236	$	21,130
	December 31, 2015
		Recorded investment		Recorded investment		Unpaid
(in thousands)		without an allowance		with an allowance		principal balance		Related allowance
Commercial non-real estate	$	34,788	$	46,834	$	84,988	$	19,031
Commercial real estate - owner occupied		4,747		661		5,931		23
Total commercial & industrial		39,535		47,495		90,919		19,054
Commercial real estate - income producing		3,038		8,085		11,363		1,382
Construction and land development		12,461		1,765		14,784		392
Residential mortgages		—		895		1,405		127
Consumer		—		152		152		33
Total loans	$	55,034	$	58,392	$	118,623	$	20,988

	Three Months Ended
	September 30, 2016				September 30, 2015
	Average		Interest		Average			Interest
	recorded		income		recorded			income
(in thousands)	investment		recognized		investment			recognized
Commercial non-real estate	$	233,913	$	155	$	53,862	$	3
Commercial real estate - owner occupied		6,374		10		21,584		16
Total commercial & industrial		240,287		165		75,446		19
Commercial real estate - income producing		7,729		24		12,601		15
Construction and land development		1,655		—		3,207		7
Residential mortgages		2,466		3		1,136		1
Consumer		826		2		137		—
Total loans	$	252,963	$	194	$	92,527	$	42

	Nine Months Ended
	September 30, 2016				September 30, 2015
	Average		Interest		Average			Interest
	recorded		income		recorded			income
(in thousands)	investment		recognized		investment			recognized
Commercial non-real estate	$	197,382	$	1,002	$	31,570	$	6
Commercial real estate - owner occupied		6,015		39		14,836		40
Total commercial & industrial		203,397		1,041		46,406		46
Commercial real estate - income producing		8,624		67		10,905		56
Construction and land development		7,821		—		4,762		66
Residential mortgages		1,444		7		1,837		20
Consumer		348		4		101		3
Total loans	$	221,634	$	1,119	$	64,011	$	191

Age Analysis of Past Due Loans by Portfolio Class

													Recorded
					Greater than								investment
	30-59 days		60-89 days		90 days		Total				Total		> 90 days and
September 30, 2016	past due		past due		past due		past due		Current		Loans		still accruing
(in thousands)
Commercial non-real estate	$	15,501	$	24,566	$	63,794	$	103,861	$	7,030,067	$	7,133,928	$	543
Commercial real estate - owner occupied		3,006		1,115		7,257		11,378		1,890,447		1,901,825		—
Total commercial & industrial		18,507		25,681		71,051		115,239		8,920,514		9,035,753		543
Commercial real estate - income producing		1,873		225		4,421		6,519		1,983,790		1,990,309		—
Construction and land development		1,069		1,565		7,358		9,992		936,600		946,592		3,501
Residential mortgages		23,067		6,771		11,541		41,379		1,995,783		2,037,162		—
Consumer		15,650		5,402		7,609		28,661		2,032,344		2,061,005		889
Total	$	60,166	$	39,644	$	101,980	$	201,790	$	15,869,031	$	16,070,821	$	4,933

													Recorded
					Greater than								investment
	30-59 days		60-89 days		90 days		Total				Total		> 90 days and
December 31, 2015	past due		past due		past due		past due		Current		Loans		still accruing
(in thousands)
Commercial non-real estate	$	17,406	$	1,468	$	25,007	$	43,881	$	6,951,943	$	6,995,824	$	3,060
Commercial real estate - owner occupied		5,898		802		6,646		13,346		1,846,123		1,859,469		535
Total commercial & industrial		23,304		2,270		31,653		57,227		8,798,066		8,855,293		3,595
Commercial real estate - income producing		871		603		6,382		7,856		1,545,226		1,553,082		499
Construction and land development		19,886		436		4,043		24,365		1,127,585		1,151,950		1,230
Residential mortgages		18,657		4,360		11,840		34,857		2,014,667		2,049,524		163
Consumer		16,309		4,432		8,645		29,386		2,064,079		2,093,465		2,166
Total	$	79,027	$	12,101	$	62,563	$	153,691	$	15,549,623	$	15,703,314	$	7,653

Activity in Loss Share Receivable

	Nine Months Ended
	September 30,		September 30,
(in thousands)	2016		2015
Beginning Balance	$	29,868	$	60,272
Amortization		(4,678)		(4,034)
Charge-offs, write-downs and other recoveries		(5,569)		(6,733)
External expenses qualifying under loss share agreement		1,000		1,035
Changes due to changes in cash flow projections		(3,027)		(1,984)
FDIC resolution of denied claims		—		(1,854)
Net payments to (from) FDIC		436		(14,667)
Ending balance	$	18,030	$	32,035

Changes in Carrying Amount of Purchased Credit Impaired Loans and Related Accretable Yield

	September 30, 2016				December 31, 2015
	Carrying				Carrying
	Amount		Accretable		Amount		Accretable
(in thousands)	of Loans		Yield		of Loans		Yield
Balance at beginning of period	$	225,838	$	129,488	$	313,685	$	187,456
Payments received, net		(39,446)		(7,575)		(115,847)		(21,978)
Accretion		15,400		(15,400)		28,000		(28,000)
Increase (decrease) in expected cash flows based on actual cash flows and changes in cash flow assumptions		—		5,352		—		(4,238)
Net transfers to (from) nonaccretable difference to accretable yield		—		10,675		—		(3,752)
Balance at end of period	$	201,792	$	122,540	$	225,838	$	129,488

Total Commercial [Member]

Accounts, Notes, Loans and Financing Receivable [Line Items]

Credit Quality Indicators by Segments and Portfolio Class

	September 30, 2016
(in thousands)	Commercial non-real estate		Commercial real estate - owner-occupied		Total commercial & industrial		Commercial real estate - income producing		Construction and land development		Total commercial
Grade:
Pass	$	5,899,626	$	1,721,031	$	7,620,657	$	1,876,423	$	904,550	$	10,401,630
Pass-Watch		180,467		42,727		223,194		69,773		21,945		314,912
Special Mention		196,408		32,046		228,454		6,100		198		234,752
Substandard		827,476		106,021		933,497		38,000		19,899		991,396
Doubtful		29,951		—		29,951		13		—		29,964
Total	$	7,133,928	$	1,901,825	$	9,035,753	$	1,990,309	$	946,592	$	11,972,654
	December 31, 2015
(in thousands)	Commercial non-real estate		Commercial real estate - owner-occupied		Total commercial & industrial		Commercial real estate - income producing		Construction and land development		Total commercial
Grade:
Pass	$	6,260,863	$	1,718,725	$	7,979,588	$	1,502,484	$	1,095,296	$	10,577,368
Pass-Watch		168,589		31,764		200,353		14,717		6,841		221,911
Special Mention		211,230		41,147		252,377		5,905		12,297		270,579
Substandard		355,098		67,833		422,931		29,960		37,516		490,407
Doubtful		44		—		44		16		—		60
Total	$	6,995,824	$	1,859,469	$	8,855,293	$	1,553,082	$	1,151,950	$	11,560,325

Residential Mortgages and Consumer [Member]

Accounts, Notes, Loans and Financing Receivable [Line Items]

Credit Quality Indicators by Segments and Portfolio Class

	September 30, 2016						December 31, 2015
(in thousands)	Residential mortgage		Consumer		Total		Residential mortgage		Consumer		Total
Performing	$	2,015,981	$	2,048,364	$	4,064,345	$	2,025,563	$	2,082,238	$	4,107,801
Nonperforming		21,181		12,641		33,822		23,961		11,227		35,188
Total	$	2,037,162	$	2,061,005	$	4,098,167	$	2,049,524	$	2,093,465	$	4,142,989