Loans (Tables)

12 Months Ended

Dec. 31, 2017

The detail of the loan portfolio as of December 31, 2017 and 2016 was as follows:



	December 31, 2017						December 31, 2016
	Non-PCI Loans		PCI Loans*		Total		Non-PCI Loans		PCI Loans*		Total
	(in thousands)
Loans:
Commercial and industrial	$	2,549,065	$	192,360	$	2,741,425	$	2,357,018	$	281,177	$	2,638,195
Commercial real estate:
Commercial real estate	8,561,851		934,926		9,496,777		7,628,328		1,091,339		8,719,667
Construction	809,964		41,141		851,105		710,266		114,680		824,946
Total commercial real estate loans	9,371,815		976,067		10,347,882		8,338,594		1,206,019		9,544,613
Residential mortgage	2,717,744		141,291		2,859,035		2,684,195		183,723		2,867,918
Consumer:
Home equity	373,631		72,649		446,280		376,213		92,796		469,009
Automobile	1,208,804		98		1,208,902		1,139,082		145		1,139,227
Other consumer	723,306		4,750		728,056		569,499		7,642		577,141
Total consumer loans	2,305,741		77,497		2,383,238		2,084,794		100,583		2,185,377
Total loans	$	16,944,365	$	1,387,215	$	18,331,580	$	15,464,601	$	1,771,502	$	17,236,103


*	PCI loans include covered loans (mostly consisting of residential mortgage loans) totaling $38.7 million and $70.4 million at December 31, 2017 and 2016, respectively.

Changes in Accretable Yield for PCI Loans

The following table presents changes in the accretable yield for PCI loans for the years ended December 31, 2017 and 2016:



	2017			2016
	(in thousands)
Balance, beginning of period	$	294,514		$	415,179
Accretion	(89,770		)	(107,482		)
Net increase (decrease) in expected cash flows	77,265			(9,989		)
Other, net	—			(3,194		)
Balance, end of period	$	282,009		$	294,514

Changes in Amounts of Loans and Advances to the Related Parties

The following table summarizes the changes in the total amounts of loans and advances to the related parties during the year ended December 31, 2017:



	2017
	(in thousands)
Outstanding at beginning of year	$	165,320
New loans and advances	7,307
Repayments	(21,362		)
Outstanding at end of year	$	151,265

Past Due, Non-Accrual and Current Loans by Loan Portfolio Class

The following tables present past due, non-accrual and current loans (excluding PCI loans, which are accounted for on a pool basis) by loan portfolio class at December 31, 2017 and 2016:



	Past Due and Non-Accrual Loans
	30-59 Days Past Due Loans		60-89 Days Past Due Loans		Accruing Loans 90 Days Or More Past Due		Non-Accrual Loans		Total Past Due Loans		Current Non-PCI Loans		Total Non-PCI Loans
	(in thousands)
December 31, 2017
Commercial and industrial	$	3,650	$	544	$	—	$	20,890	$	25,084	$	2,523,981	$	2,549,065
Commercial real estate:
Commercial real estate	11,223		—		27		11,328		22,578		8,539,273		8,561,851
Construction	12,949		18,845		—		732		32,526		777,438		809,964
Total commercial real estate loans	24,172		18,845		27		12,060		55,104		9,316,711		9,371,815
Residential mortgage	12,669		7,903		2,779		12,405		35,756		2,681,988		2,717,744
Consumer loans:
Home equity	1,009		94		—		1,777		2,880		370,751		373,631
Automobile	5,707		987		271		73		7,038		1,201,766		1,208,804
Other consumer	1,693		118		13		20		1,844		721,462		723,306
Total consumer loans	8,409		1,199		284		1,870		11,762		2,293,979		2,305,741
Total	$	48,900	$	28,491	$	3,090	$	47,225	$	127,706	$	16,816,659	$	16,944,365



	Past Due and Non-Accrual Loans
	30-59 Days Past Due Loans		60-89 Days Past Due Loans		Accruing Loans 90 Days Or More Past Due		Non-Accrual Loans		Total Past Due Loans		Current Non-PCI Loans		Total Non-PCI Loans
	(in thousands)
December 31, 2016
Commercial and industrial	$	6,705	$	5,010	$	142	$	8,465	$	20,322	$	2,336,696	$	2,357,018
Commercial real estate:
Commercial real estate	5,894		8,642		474		15,079		30,089		7,598,239		7,628,328
Construction	6,077		—		1,106		715		7,898		702,368		710,266
Total commercial real estate loans	11,971		8,642		1,580		15,794		37,987		8,300,607		8,338,594
Residential mortgage	12,005		3,564		1,541		12,075		29,185		2,655,010		2,684,195
Consumer loans:
Home equity	929		415		—		1,028		2,372		373,841		376,213
Automobile	3,192		723		188		146		4,249		1,134,833		1,139,082
Other consumer	76		9		21		—		106		569,393		569,499
Total consumer loans	4,197		1,147		209		1,174		6,727		2,078,067		2,084,794
Total	$	34,878	$	18,363	$	3,472	$	37,508	$	94,221	$	15,370,380	$	15,464,601

Impaired Loans by Loan Portfolio Class

The following table presents the information about impaired loans by loan portfolio class at December 31, 2017 and 2016:



	Recorded Investment With No Related Allowance		Recorded Investment With Related Allowance		Total Recorded Investment		Unpaid Contractual Principal Balance		Related Allowance
	(in thousands)
December 31, 2017
Commercial and industrial	$	9,946	$	75,553	$	85,499	$	90,269	$	11,044
Commercial real estate:
Commercial real estate	28,709		29,771		58,480		62,286		2,718
Construction	1,904		467		2,371		2,394		17
Total commercial real estate loans	30,613		30,238		60,851		64,680		2,735
Residential mortgage	5,654		8,402		14,056		15,332		718
Consumer loans:
Home equity	3,096		664		3,760		4,917		64
Total consumer loans	3,096		664		3,760		4,917		64
Total	$	49,309	$	114,857	$	164,166	$	175,198	$	14,561
December 31, 2016
Commercial and industrial	$	3,609	$	27,031	$	30,640	$	35,957	$	5,864
Commercial real estate:
Commercial real estate	21,318		36,974		58,292		60,267		3,612
Construction	1,618		2,379		3,997		3,997		260
Total commercial real estate loans	22,936		39,353		62,289		64,264		3,872
Residential mortgage	8,398		9,958		18,356		19,712		725
Consumer loans:
Home equity	1,182		2,352		3,534		3,626		70
Total consumer loans	1,182		2,352		3,534		3,626		70
Total	$	36,125	$	78,694	$	114,819	$	123,559	$	10,531

Average Recorded Investment and Interest Income Recognized on Impaired Loans

The following table presents, by loan portfolio class, the average recorded investment and interest income recognized on impaired loans for the years ended December 31, 2017, 2016 and 2015:



	2017				2016				2015
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
	(in thousands)
Commercial and industrial	$	80,974	$	1,459	$	36,552	$	1,045	$	28,451	$	893
Commercial real estate:
Commercial real estate	54,799		1,908		59,633		2,122		77,154		2,380
Construction	3,258		86		5,790		182		16,399		534
Total commercial real estate loans	58,057		1,994		65,423		2,304		93,553		2,914
Residential mortgage	15,451		760		21,340		874		24,435		728
Consumer loans:
Home equity	4,295		160		2,626		68		3,852		111
Total consumer loans	4,295		160		2,626		68		3,852		111
Total	$	158,777	$	4,373	$	125,941	$	4,291	$	150,291	$	4,646

Non-PCI Loans by Loan Class Modified as TDRs

The non-PCI loans modified as TDRs within the previous 12 months and for which there was a payment default (90 or more days past due) for the years ended December 31, 2017 and 2016 were as follows:



	Years Ended December 31,
	2017			2016
Troubled Debt Restructurings Subsequently Defaulted	Number of Contracts	Recorded Investment		Number of Contracts	Recorded Investment
	($ in thousands)
Commercial and industrial	7	$	5,841	—	$	—
Commercial real estate	1	165		2	357
Residential mortgage	5	1,125		—	—
Consumer	—	—		4	853
Total	13	$	7,131	6	$	1,210

The following table presents non-PCI loans by loan class modified as TDRs during the years ended December 31, 2017 and 2016. The pre-modification and post-modification outstanding recorded investments disclosed in the table below represent the loan carrying amounts immediately prior to the modification and the carrying amounts at December 31, 2017 and 2016, respectively.



Troubled Debt Restructurings	Number of Contracts	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
		($ in thousands)
December 31, 2017
Commercial and industrial	90	$	75,894	$	69,020
Commercial real estate:
Commercial real estate	6	23,781		23,548
Construction	3	1,188		932
Total commercial real estate	9	24,969		24,480
Residential mortgage	7	1,769		1,727
Total	106	$	102,632	$	95,227
December 31, 2016
Commercial and industrial	19	$	18,186	$	16,277
Commercial real estate:
Commercial real estate	4	8,325		7,092
Construction	3	2,922		3,626
Total commercial real estate	7	11,247		10,718
Residential mortgage	7	1,867		1,826
Consumer	1	54		51
Total	34	$	31,354	$	28,872

Risk Category of Loans by Class of Loans

The following table presents the credit exposure by internally assigned risk rating by class of loans (excluding PCI loans) based on the most recent analysis performed at December 31, 2017 and 2016.



Credit exposure— by internally assigned risk rating			Special						Total Non-PCI
Credit exposure— by internally assigned risk rating	Pass		Mention		Substandard		Doubtful		Loans
	(in thousands)
December 31, 2017
Commercial and industrial	$	2,375,689	$	62,071	$	96,555	$	14,750	$	2,549,065
Commercial real estate	8,447,865		48,009		65,977		—		8,561,851
Construction	808,091		360		1,513		—		809,964
Total	$	11,631,645	$	110,440	$	164,045	$	14,750	$	11,920,880
December 31, 2016
Commercial and industrial	$	2,246,457	$	44,316	$	64,649	$	1,596	$	2,357,018
Commercial real estate	7,486,469		57,591		84,268		—		7,628,328
Construction	708,070		200		1,996		—		710,266
Total	$	10,440,996	$	102,107	$	150,913	$	1,596	$	10,695,612

Recorded Investment in Loan Classes Based on Payment Activity

The following table presents the recorded investment in PCI loans by class based on individual loan payment activity as of December 31, 2017 and 2016:



Credit exposure—	Performing		Non-Performing		Total
by payment activity	Loans		Loans		PCI Loans
	(in thousands)
December 31, 2017
Commercial and industrial	$	172,105	$	20,255	$	192,360
Commercial real estate	924,574		10,352		934,926
Construction	39,802		1,339		41,141
Residential mortgage	135,745		5,546		141,291
Consumer	76,901		596		77,497
Total	$	1,349,127	$	38,088	$	1,387,215
December 31, 2016
Commercial and industrial	$	272,483	$	8,694	$	281,177
Commercial real estate	1,080,376		10,963		1,091,339
Construction	113,370		1,310		114,680
Residential mortgage	179,793		3,930		183,723
Consumer	98,469		2,114		100,583
Total	$	1,744,491	$	27,011	$	1,771,502

The following table presents the recorded investment in those loan classes based on payment activity as of December 31, 2017 and 2016:



Credit exposure— by payment activity	Performing Loans		Non-Performing Loans		Total Non-PCI Loans
	(in thousands)
December 31, 2017
Residential mortgage	$	2,705,339	$	12,405	$	2,717,744
Home equity	371,854		1,777		373,631
Automobile	1,208,731		73		1,208,804
Other consumer	723,286		20		723,306
Total	$	5,009,210	$	14,275	$	5,023,485
December 31, 2016
Residential mortgage	$	2,672,120	$	12,075	$	2,684,195
Home equity	375,185		1,028		376,213
Automobile	1,138,936		146		1,139,082
Other consumer	569,499		—		569,499
Total	$	4,755,740	$	13,249	$	4,768,989