Loans and Allowance for Loan Losses (Tables)

6 Months Ended

Jun. 30, 2016

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

Loans, Net of Unearned Income

	June 30,		December 31,
(in thousands)	2016		2015
Commercial non-real estate	$	7,132,519	$	6,995,824
Commercial real estate - owner occupied		1,916,200		1,859,469
Total commercial & industrial		9,048,719		8,855,293
Commercial real estate - income producing		2,024,471		1,553,082
Construction and land development		880,588		1,151,950
Residential mortgages		2,017,650		2,049,524
Consumer		2,064,368		2,093,465
Total loans	$	16,035,796	$	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
	Six Months Ended June 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)		(23)		(8)		(78)
Recoveries		8		120		128		2		53		3		106		292
Net provision for loan losses		79		(170)		(91)		26		(117)		1,165		(1,290)		(307)
Increase (decrease) in FDIC loss share receivable		39		—		39		—		—		(3,378)		(98)		(3,437)
Non-purchased credit impaired activity:
Charge-offs		(22,212)		(1,199)		(23,411)		(191)		(592)		(592)		(11,268)		(36,054)
Recoveries		1,802		238		2,040		268		1,125		480		3,039		6,952
Net provision for loan losses		61,628		1,857		63,485		6,654		(1,087)		466		8,021		77,539
Ending balance	$	150,772	$	10,676	$	161,448	$	12,799	$	5,006	$	23,474	$	23,359	$	226,086
Ending balance:
Allowance:
Individually evaluated for impairment	$	12,885	$	183	$	13,068	$	72	$	1	$	167	$	41	$	13,349
Amounts related to purchased credit impaired loans		572		1,015		1,587		741		575		15,430		1,257		19,590
Collectively evaluated for impairment		137,315		9,478		146,793		11,986		4,430		7,877		22,061		193,147
Total allowance	$	150,772	$	10,676	$	161,448	$	12,799	$	5,006	$	23,474	$	23,359	$	226,086
Loans:
Individually evaluated for impairment	$	232,785	$	5,898	$	238,683	$	7,803	$	1,247	$	1,068	$	166	$	248,967
Purchased credit impaired loans		10,483		15,428		25,911		10,752		8,761		151,674		12,826		209,924
Collectively evaluated for impairment		6,889,251		1,894,874		8,784,125		2,005,916		870,580		1,864,908		2,051,376		15,576,905
Total loans	$	7,132,519	$	1,916,200		9,048,719	$	2,024,471	$	880,588	$	2,017,650	$	2,064,368	$	16,035,796

			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
	Six Months ended June 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		(1,099)		(15)		(1,114)		(2,353)		(285)		(168)		(140)		(4,060)
Recoveries		14		465		479		—		406		2		136		1,023
Net provision for loan losses		470		(1,171)		(701)		1,102		(733)		272		(889)		(949)
Increase (decrease) in FDIC loss share receivable		347		(396)		(49)		919		(6)		(3,296)		(104)		(2,536)
Non-purchased credit impaired activity:
Charge-offs		(2,215)		(378)		(2,593)		(147)		(828)		(1,292)		(6,729)		(11,589)
Recoveries		2,051		135		2,186		291		1,308		449		2,491		6,725
Net provision for loan losses		9,586		2,812		12,398		(1,858)		(982)		62		4,091		13,711
Ending balance	$	60,323	$	14,988	$	75,311	$	5,500	$	5,301	$	24,689	$	20,286	$	131,087
Ending balance:
Allowance:
Individually evaluated for impairment	$	2,903	$	2,189	$	5,092	$	228	$	73	$	163	$	6	$	5,562
Amounts related to purchased credit impaired loans		643		1,639		2,282		973		390		17,419		2,998		24,062
Collectively evaluated for impairment		56,777		11,160		67,937		4,299		4,838		7,107		17,282		101,463
Total allowance	$	60,323	$	14,988	$	75,311	$	5,500	$	5,301	$	24,689	$	20,286	$	131,087
Loans:
Individually evaluated for impairment	$	32,379	$	21,701	$	54,080	$	12,682	$	4,360	$	1,369	$	116	$	72,607
Purchased credit impaired loans		13,667		24,775		38,442		15,563		19,465		171,107		14,860		259,437
Collectively evaluated for impairment		6,139,638		1,714,266		7,853,904		1,423,846		1,097,122		1,783,361		1,854,475		14,012,708
Total loans	$	6,185,684	$	1,760,742		7,946,426	$	1,452,091	$	1,120,947	$	1,955,837	$	1,869,451	$	14,344,752

Composition of Nonaccrual Loans by Portfolio Class

	June 30,		December 31,
(in thousands)	2016		2015
Commercial non-real estate	$	209,362	$	88,743
Commercial real estate - owner occupied		11,761		10,001
Total commercial & industrial		221,123		98,744
Commercial real estate - income producing		9,011		10,815
Construction and land development		4,173		17,294
Residential mortgages		22,874		23,799
Consumer		8,541		9,061
Total loans	$	265,722	$	159,713

Troubled Debt Restructurings Modified by Portfolio Class

	Six Months Ended
($ in thousands)		June 30, 2016					June 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		4		432		432		2		68		68
Consumer		—		—		—		1		20		20
Total loans		21	$	58,347	$	58,347		4	$	570	$	570

Loans Individually Evaluated for Impairment Disaggregated by Portfolio Class

	June 30, 2016
		Recorded investment		Recorded investment		Unpaid
(in thousands)		without an allowance		with an allowance		principal balance		Related allowance
Commercial non-real estate	$	101,481	$	131,304	$	244,928	$	12,885
Commercial real estate - owner occupied		3,323		2,575		6,285		183
Total commercial & industrial		104,804		133,879		251,213		13,068
Commercial real estate - income producing		5,265		2,538		8,034		72
Construction and land development		1,228		19		2,089		1
Residential mortgages		—		1,068		1,709		167
Consumer		—		166		166		41
Total loans	$	111,297	$	137,670	$	263,211	$	13,349
	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
	June 30, 2016				June 30, 2015
	Average		Interest		Average			Interest
	recorded		income		recorded			income
(in thousands)	investment		recognized		investment			recognized
Commercial non-real estate	$	216,907	$	493	$	23,473	$	1
Commercial real estate - owner occupied		5,959		14		14,565		12
Total commercial & industrial		222,866		507		38,038		13
Commercial real estate - income producing		8,242		22		12,521		26
Construction and land development		7,660		—		4,371		27
Residential mortgages		976		2		1,896		7
Consumer		112		1		119		1
Total loans	$	239,856	$	532	$	56,945	$	74

	Six Months Ended
	June 30, 2016				June 30, 2015
	Average		Interest		Average			Interest
	recorded		income		recorded			income
(in thousands)	investment		recognized		investment			recognized
Commercial non-real estate	$	179,117	$	847	$	16,977	$	3
Commercial real estate - owner occupied		5,836		29		12,628		23
Total commercial & industrial		184,953		876		29,605		26
Commercial real estate - income producing		9,072		43		10,366		41
Construction and land development		10,905		—		5,664		59
Residential mortgages		932		4		2,149		20
Consumer		109		2		81		3
Total loans	$	205,971	$	925	$	47,865	$	149

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
June 30, 2016	past due		past due		past due		past due		Current		Loans		still accruing
(in thousands)
Commercial non-real estate	$	47,859	$	28,591	$	29,000	$	105,450	$	7,027,069	$	7,132,519	$	567
Commercial real estate - owner occupied		2,451		2,106		7,149		11,706		1,904,494		1,916,200		1,495
Total commercial & industrial		50,310		30,697		36,149		117,156		8,931,563		9,048,719		2,062
Commercial real estate - income producing		2,583		467		2,777		5,827		2,018,644		2,024,471		194
Construction and land development		1,386		938		7,647		9,971		870,617		880,588		4,759
Residential mortgages		15,108		7,293		12,549		34,950		1,982,700		2,017,650		143
Consumer		12,012		4,459		6,107		22,578		2,041,790		2,064,368		824
Total	$	81,399	$	43,854	$	65,229	$	190,482	$	15,845,314	$	16,035,796	$	7,982

													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

	Six Months Ended
	June 30,		June 30,
(in thousands)	2016		2015
Beginning Balance	$	29,868	$	60,272
Amortization		(3,139)		(2,470)
Charge-offs, write-downs and other recoveries		(2,683)		(4,667)
External expenses qualifying under loss share agreement		307		482
Changes due to changes in cash flow projections		(3,437)		(2,536)
FDIC resolution of denied claims		—		(1,854)
Net payments to (from) FDIC		159		(14,153)
Ending balance	$	21,075	$	35,074

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

	June 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		(26,541)		(6,581)		(115,847)		(21,978)
Accretion		10,627		(10,627)		28,000		(28,000)
Increase (decrease) in expected cash flows based on actual cash flows and changes in cash flow assumptions		—		5,107		—		(4,238)
Net transfers from nonaccretable
Net transfers to (from) nonaccretable difference to accretable yield		—		8,997		—		(3,752)
Balance at end of period	$	209,924	$	126,384	$	225,838	$	129,488

Total Commercial [Member]

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

Credit Quality Indicators by Segments and Portfolio Class

	June 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	$	5,968,194	$	1,743,672	$	7,711,866	$	1,961,653	$	847,229	$	10,520,748
Pass-Watch		252,605		39,586		292,191		15,764		16,355		324,310
Special Mention		250,226		37,151		287,377		8,412		537		296,326
Substandard		659,381		95,791		755,172		38,629		16,467		810,268
Doubtful		2,113		—		2,113		13		—		2,126
Total	$	7,132,519	$	1,916,200	$	9,048,719	$	2,024,471	$	880,588	$	11,953,778
	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

	June 30, 2016						December 31, 2015
(in thousands)	Residential mortgage		Consumer		Total		Residential mortgage		Consumer		Total
Performing	$	1,994,633	$	2,055,003	$	4,049,636	$	2,025,563	$	2,082,238	$	4,107,801
Nonperforming		23,017		9,365		32,382		23,961		11,227		35,188
Total	$	2,017,650	$	2,064,368	$	4,082,018	$	2,049,524	$	2,093,465	$	4,142,989