Loans (Tables)

12 Months Ended

Dec. 31, 2016

Schedule of Non-Covered and Covered Loans

Loans consist of the following, segregated into legacy and acquired loans, for the periods indicated:



	December 31, 2016
(Dollars in thousands)	Legacy Loans		Acquired Loans		Total
Commercial loans:
Real estate	$	5,623,314	$	1,178,952	$	6,802,266
Commercial and industrial	3,194,796		348,326		3,543,122
Energy-related	559,289		1,904		561,193
	9,377,399		1,529,182		10,906,581

Residential mortgage loans:	854,216		413,184		1,267,400

Consumer and other loans:
Home equity	1,783,421		372,505		2,155,926
Indirect automobile	131,048		4		131,052
Other	548,840		55,172		604,012
	2,463,309		427,681		2,890,990
Total	$	12,694,924	$	2,370,047	$	15,064,971



	December 31, 2015
(Dollars in thousands)	Legacy Loans		Acquired Loans		Total
Commercial loans:
Real estate	$	4,504,062	$	1,569,449	$	6,073,511
Commercial and industrial	2,952,102		492,476		3,444,578
Energy-related	677,177		3,589		680,766
	8,133,341		2,065,514		10,198,855

Residential mortgage loans:	694,023		501,296		1,195,319

Consumer and other loans:
Home equity	1,575,643		490,524		2,066,167
Indirect automobile	246,214		84		246,298
Other	541,299		79,490		620,789
	2,363,156		570,098		2,933,254
Total	$	11,190,520	$	3,136,908	$	14,327,428

Schedule of Aging of Loans

The following tables provide an analysis of the aging of loans as of December 31, 2016 and 2015. Due to the difference in accounting for acquired loans, the tables below further segregate the Company’s loans between loans originated, or renewed and underwritten by the Company ("legacy loans") and acquired loans.



	December 31, 2016
	Legacy loans
	Accruing
(Dollars in thousands)	Current or less than 30 days past due		30-59 days		60-89 days		> 90 days		Total Past Due		Non-accrual Loans		Total Loans
Commercial real estate - Construction	$	740,761	$	—	$	—	$	—	$	—	$	—	$	740,761
Commercial real estate - Other	4,863,902		1,861		351		—		2,212		16,439		4,882,553
Commercial and industrial	3,158,700		3,999		870		—		4,869		31,227		3,194,796
Energy-related	407,434		—		1,526		—		1,526		150,329		559,289
Residential mortgage	836,509		2,012		1,577		1,104		4,693		13,014		854,216
Consumer - Home equity	1,768,763		5,249		1,430		—		6,679		7,979		1,783,421
Consumer - Indirect automobile	127,054		2,551		405		—		2,956		1,038		131,048
Consumer - Credit card	81,602		199		99		—		298		624		82,524
Consumer - Other	462,650		2,155		618		—		2,773		893		466,316
Total	$	12,447,375	$	18,026	$	6,876	$	1,104	$	26,006	$	221,543	$	12,694,924



	December 31, 2015
	Legacy loans
	Accruing
(Dollars in thousands)	Current or less than 30 days past due		30-59 days		60-89 days		> 90 days		Total Past Due		Non-accrual Loans		Total Loans
Commercial real estate - Construction	$	635,560	$	801	$	—	$	—	$	801	$	120	$	636,481
Commercial real estate - Other	3,848,584		2,687		793		95		3,575		15,422		3,867,581
Commercial and industrial	2,943,409		1,208		739		87		2,034		6,659		2,952,102
Energy-related	670,081		15		—		—		15		7,081		677,177
Residential mortgage	676,347		1,075		2,485		442		4,002		13,674		694,023
Consumer - Home equity	1,565,596		3,549		870		—		4,419		5,628		1,575,643
Consumer - Indirect automobile	242,328		2,187		518		—		2,705		1,181		246,214
Consumer - Credit card	76,360		394		113		—		507		394		77,261
Consumer - Other	460,594		1,923		752		—		2,675		769		464,038
Total	$	11,118,859	$	13,839	$	6,270	$	624	$	20,733	$	50,928	$	11,190,520



	December 31, 2016
	Acquired loans ^{(1) (2)}
	Accruing
(Dollars in thousands)	Current or Less Than 30 days past due		30-59 days		60-89 days		> 90 days		Total Past Due		Non-accrual Loans		Discount/Premium			Acquired Impaired Loans		Total Loans
Commercial real estate - Construction	$	26,714	$	—	$	—	$	—	$	—	$	1,946	$	(243	)	$	32,991	$	61,408
Commercial real estate - Other	871,492		716		55		32		803		1,221		(3,649		)	247,677		1,117,544
Commercial and industrial	314,990		73		51		—		124		1,317		(837		)	32,732		348,326
Energy-related	1,910		—		—		—		—		—		(6		)	—		1,904
Residential mortgage	290,031		328		989		—		1,317		719		(1,835		)	122,952		413,184
Consumer - Home equity	286,411		1,078		189		250		1,517		1,395		(5,237		)	88,419		372,505
Consumer - Indirect automobile	—		—		—		—		—		—		—			4		4
Consumer - Credit Card	468		—		—		—		—		—		—			—		468
Consumer - Other	49,449		391		97		—		488		360		(1,004		)	5,411		54,704
Total	$	1,841,465	$	2,586	$	1,381	$	282	$	4,249	$	6,958	$	(12,811	)	$	530,186	$	2,370,047



	December 31, 2015
	Acquired loans ^{(1) (2)}
	Accruing
(Dollars in thousands)	Current or Less Than 30 days past due		30-59 days		60-89 days		> 90 days		Total Past Due		Non-accrual Loans		Discount/Premium			Acquired Impaired Loans		Total Loans
Commercial real estate - Construction	$	69,167	$	180	$	117	$	—	$	297	$	—	$	(358	)	$	56,320	$	125,426
Commercial real estate - Other	1,090,688		861		705		—		1,566		1,491		(4,479		)	354,757		1,444,023
Commercial and industrial	442,454		623		—		—		623		1,154		(2,517		)	50,762		492,476
Energy-related	2,186		—		—		—		—		170		2			1,231		3,589
Residential mortgage	365,261		7		940		—		947		1,109		(6,601		)	140,580		501,296
Consumer - Home equity	381,107		622		416		291		1,329		1,291		(7,333		)	114,130		490,524
Consumer - Indirect automobile	19		—		—		—		—		—		—			65		84
Consumer - Credit Card	—		—		—		—		—		—		—			582		582
Consumer - Other	74,385		468		127		—		595		206		(2,570		)	6,292		78,908
Total	$	2,425,267	$	2,761	$	2,305	$	291	$	5,357	$	5,421	$	(23,856	)	$	724,719	$	3,136,908


⁽¹⁾	Past due and non-accrual information presents acquired loans at the gross loan balance, prior to application of discounts.


⁽²⁾	Past due and non-accrual loan amounts exclude acquired impaired loans, even if contractually past due or if the Company does not expect to receive payment in full, as the Company is currently accreting interest income over the expected life of the loans.

Schedule of Carrying Amount of Loans Acquired

The tables below show the balances acquired during 2015 for these two subsections of the acquired portfolio as of the acquisition date.



(Dollars in thousands)	Acquired Non-Impaired Loans
Contractually required principal and interest at acquisition	$	2,384,114
Expected losses and foregone interest	(15,539		)
Cash flows expected to be collected at acquisition	2,368,575
Fair value of acquired loans at acquisition	$	2,105,466



(Dollars in thousands)	Acquired Impaired Loans
Contractually required principal and interest at acquisition	$	76,445
Non-accretable difference (expected losses and foregone interest)	(11,867		)
Cash flows expected to be collected at acquisition	64,578
Accretable yield	(6,823		)
Basis in acquired loans at acquisition	$	57,755

Summary of Changes in Accretable Yields of Acquired Loans

The following is a summary of changes in the accretable difference for all loans accounted for under ASC 310-30 during the years ended December 31:



(Dollars in thousands)	2016			2015			2014
Balance at beginning of period	$	227,502		$	287,651		$	354,892
Additions	—			6,823			13,848
Transfers from non-accretable difference to accretable yield	5,490			9,916			25,844
Accretion	(68,211		)	(80,479		)	(103,233		)
Changes in expected cash flows not affecting non-accretable differences⁽¹⁾	10,273			3,591			(3,700		)
Balance at end of period	$	175,054		$	227,502		$	287,651


⁽¹⁾	Includes changes in cash flows expected to be collected due to the impact of changes in actual or expected timing of liquidation events, modifications, changes in interest rates and changes in prepayment assumptions.

Schedule of Modified TDRs

The following table provides information on how the TDRs were modified during the years ended December 31:



(Dollars in thousands)	2016		2015
Extended maturities	$	75,315	$	15,594
Interest rate adjustment	193		—
Maturity and interest rate adjustment	2,470		23,374
Movement to or extension of interest-rate only payments	27,931		241
Forbearance	76,819		122
Other concession(s) ⁽¹⁾	39,708		17,710
Total	$	222,436	$	57,041


⁽¹⁾	Other concessions may include covenant waivers, forgiveness of principal or interest associated with a customer bankruptcy, or a combination of any of the above concessions.

Schedule of Subsequently Defaulted TDRs

The following table presents the end of period balance for loans modified in a TDR during the years ended December 31:



	2016					2015
(In thousands, except number of loans)	Number of Loans	Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment		Number of Loans	Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment
Commercial real estate	44	$	30,844	$	24,997	11	$	26,764	$	25,250
Commercial and industrial	59	36,379		34,415		26	21,233		18,114
Energy-related	24	133,933		141,848		2	9,797		9,484
Residential mortgage	43	5,141		4,946		1	70		68
Consumer - Home equity	158	13,273		12,568		50	4,440		3,865
Consumer - Indirect	79	983		792		6	79		79
Consumer - Other	116	3,087		2,870		17	248		181
Total	523	$	223,640	$	222,436	113	$	62,631	$	57,041

Information detailing TDRs that defaulted during the years ended December 31, 2016 and 2015 and were modified in the previous twelve months (i.e., the twelve months prior to the default) is presented in the following table. The Company has defined a default as any loan with a loan payment that is currently past due greater than 30 days, or was past due greater than 30 days at any point during the previous twelve months, or since the date of modification, whichever is shorter.



	December 31, 2016			December 31, 2015
(In thousands, except number of loans)	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Commercial real estate	9	$	467	6	$	22,075
Commercial and industrial	21	12,996		20	8,970
Energy-related	2	5,034		1	3,120
Residential mortgage	8	405		—	—
Consumer - Home Equity	25	1,379		20	1,547
Consumer - Indirect automobile	37	338		6	79
Consumer - Other	22	606		9	2
Total	124	$	21,225	62	$	35,793