Loans (Tables)

12 Months Ended

Dec. 31, 2015

Receivables [Abstract]

Summary of loans under portfolio

A summary of the Corporation's loans follows:

	December 31,
	2015		2014
	(In thousands)
Commercial loan portfolio:
Commercial	$	1,905,879	$	1,354,881
Commercial real estate	2,112,162		1,557,648
Real estate construction	210,231		152,745
Land development	21,845		18,750
Subtotal	4,250,117		3,084,024
Consumer loan portfolio:
Residential mortgage	1,429,636		1,110,390
Consumer installment	877,457		829,570
Home equity	713,937		664,246
Subtotal	3,021,030		2,604,206
Total loans	$	7,271,147	$	5,688,230

Recorded investment of loans in the commercial loan portfolio by risk rating categories

The following schedule presents the recorded investment of loans in the commercial loan portfolio by risk rating categories at December 31, 2015 and 2014:

	Commercial		Commercial Real Estate		Real Estate Construction		Land Development		Total
	(In thousands)
December 31, 2015
Originated Portfolio:
Risk Grades 1-5	$	1,418,301	$	1,341,202	$	173,828	$	9,495	$	2,942,826
Risk Grade 6	34,727		31,036		180		—		65,943
Risk Grade 7	39,933		26,658		291		832		67,714
Risk Grade 8	26,459		25,163		247		274		52,143
Risk Grade 9	2,095		—		—		—		2,095
Subtotal	1,521,515		1,424,059		174,546		10,601		3,130,721
Acquired Portfolio:
Risk Grades 1-5	340,782		629,430		35,685		5,998		1,011,895
Risk Grade 6	28,321		23,926		—		2,556		54,803
Risk Grade 7	11,607		29,975		—		1,537		43,119
Risk Grade 8	3,654		4,772		—		1,153		9,579
Risk Grade 9	—		—		—		—		—
Subtotal	384,364		688,103		35,685		11,244		1,119,396
Total	$	1,905,879	$	2,112,162	$	210,231	$	21,845	$	4,250,117
December 31, 2014
Originated Portfolio:
Risk Grades 1-5	$	1,171,817	$	1,114,529	$	134,668	$	2,952	$	2,423,966
Risk Grade 6	37,800		34,996		1,408		738		74,942
Risk Grade 7	29,863		29,935		2,502		613		62,913
Risk Grade 8	16,417		24,958		162		225		41,762
Risk Grade 9	1		8		—		—		9
Subtotal	1,255,898		1,204,426		138,740		4,528		2,603,592
Acquired Portfolio:
Risk Grades 1-5	76,780		321,018		14,005		11,789		423,592
Risk Grade 6	12,687		8,698		—		583		21,968
Risk Grade 7	4,089		12,478		—		197		16,764
Risk Grade 8	5,427		11,028		—		1,653		18,108
Risk Grade 9	—		—		—		—		—
Subtotal	98,983		353,222		14,005		14,222		480,432
Total	$	1,354,881	$	1,557,648	$	152,745	$	18,750	$	3,084,024

Recorded investment of loans in the consumer loan portfolio based on the credit risk profile of loans in a performing and nonperforming status

The following schedule presents the recorded investment of loans in the consumer loan portfolio based on loans in a performing status and loans in a nonperforming status at December 31, 2015 and 2014:

	Residential Mortgage		Consumer Installment		Home Equity		Total
	(In thousands)
December 31, 2015
Originated Portfolio:
Performing	$	1,207,945	$	868,975	$	587,566	$	2,664,486
Nonperforming	9,030		451		3,246		12,727
Subtotal	1,216,975		869,426		590,812		2,677,213
Acquired Portfolio:
Performing	210,580		7,984		122,118		340,682
Nonperforming	2,081		47		1,007		3,135
Subtotal	212,661		8,031		123,125		343,817
Total	$	1,429,636	$	877,457	$	713,937	$	3,021,030
December 31, 2014
Originated Portfolio:
Performing	$	987,542	$	818,878	$	566,083	$	2,372,503
Nonperforming	10,459		500		3,013		13,972
Subtotal	998,001		819,378		569,096		2,386,475
Acquired Portfolio:
Performing	111,101		10,174		94,696		215,971
Nonperforming	1,288		18		454		1,760
Subtotal	112,389		10,192		95,150		217,731
Total	$	1,110,390	$	829,570	$	664,246	$	2,604,206

Summary of nonperforming loans

A summary of nonperforming loans follows:

	December 31,
	2015		2014
	(In thousands)
Nonaccrual loans:
Commercial	$	28,554	$	16,418
Commercial real estate	25,163		24,966
Real estate construction	247		162
Land development	274		225
Residential mortgage	5,557		6,706
Consumer installment	451		500
Home equity	1,979		1,667
Total nonaccrual loans	62,225		50,644
Accruing loans contractually past due 90 days or more as to interest or principal payments:
Commercial	364		170
Commercial real estate	254		—
Residential mortgage	402		557
Home equity	1,267		1,346
Total accruing loans contractually past due 90 days or more as to interest or principal payments	2,287		2,073
Nonperforming TDRs:
Commercial loan portfolio	16,297		15,271
Consumer loan portfolio	3,071		3,196
Total nonperforming TDRs	19,368		18,467
Total nonperforming loans	$	83,880	$	71,184

Schedule of Impaired loans by classes

The following schedule presents impaired loans by classes of loans at December 31, 2015:

	Recorded Investment		Unpaid Principal Balance		Related Valuation Allowance		Average Annual Recorded Investment		Interest Income Recognized While on Impaired Status
	(In thousands)
Impaired loans with a valuation allowance:
Commercial	$	18,898	$	19,426	$	5,700	$	9,511	$	—
Commercial real estate	4,448		4,688		497		2,918		—
Residential mortgage	21,037		21,037		192		20,661		1,312
Subtotal	44,383		45,151		6,389		33,090		1,312
Impaired loans with no related valuation allowance:
Commercial	31,039		37,703		—		32,172		1,303
Commercial real estate	53,518		69,130		—		56,562		1,985
Real estate construction	400		480		—		457		11
Land development	1,736		2,628		—		1,768		104
Residential mortgage	7,638		8,644		—		8,465		165
Consumer installment	498		512		—		480		2
Home equity	2,986		3,270		—		2,736		58
Subtotal	97,815		122,367		—		102,640		3,628
Total impaired loans:
Commercial	49,937		57,129		5,700		41,683		1,303
Commercial real estate	57,966		73,818		497		59,480		1,985
Real estate construction	400		480		—		457		11
Land development	1,736		2,628		—		1,768		104
Residential mortgage	28,675		29,681		192		29,126		1,477
Consumer installment	498		512		—		480		2
Home equity	2,986		3,270		—		2,736		58
Total	$	142,198	$	167,518	$	6,389	$	135,730	$	4,940

The following schedule presents impaired loans by classes of loans at December 31, 2014:

	Recorded Investment		Unpaid Principal Balance		Related Valuation Allowance		Average Annual Recorded Investment		Interest  Income Recognized While on Impaired Status
	(In thousands)
Impaired loans with a valuation allowance:
Commercial	$	966	$	1,040	$	293	$	2,117	$	—
Commercial real estate	2,587		2,927		710		3,699		—
Residential mortgage	19,681		19,681		335		19,740		1,252
Subtotal	23,234		23,648		1,338		25,556		1,252
Impaired loans with no related valuation allowance:
Commercial	38,094		44,557		—		39,020		1,375
Commercial real estate	60,616		82,693		—		49,676		1,567
Real estate construction	162		255		—		164		—
Land development	1,928		3,484		—		3,551		131
Residential mortgage	7,994		7,994		—		7,005		15
Consumer installment	518		518		—		602		1
Home equity	2,121		2,121		—		2,302		12
Subtotal	111,433		141,622		—		102,320		3,101
Total impaired loans:
Commercial	39,060		45,597		293		41,137		1,375
Commercial real estate	63,203		85,620		710		53,375		1,567
Real estate construction	162		255		—		164		—
Land development	1,928		3,484		—		3,551		131
Residential mortgage	27,675		27,675		335		26,745		1,267
Consumer installment	518		518		—		602		1
Home equity	2,121		2,121		—		2,302		12
Total	$	134,667	$	165,270	$	1,338	$	127,876	$	4,353

The average annual recorded investment of impaired loans during 2013 was $121.0 million and was comprised of the following classes of loans: commercial - $29.6 million; commercial real estate - $50.8 million; real estate construction - $0.4 million; land development - $9.8 million; residential mortgage - $26.8 million; consumer installment - $0.7 million; and home equity - $2.9 million. Interest income recognized during 2013 while these loans were in impaired status was $3.8 million, including $1.0 million on commercial loans, $1.3 million on commercial real estate loans, $0.3 million on land development loans and $1.1 million on residential mortgage loans.

Schedule representing the aging status of the recorded investment in loans by classes

The following schedule presents the aging status of the recorded investment in loans by classes of loans at December 31, 2015 and 2014:

	31-60 Days Past Due		61-89 Days Past Due		Accruing Loans Past Due 90 Days or More		Non-accrual Loans		Total Past Due		Current		Total Loans
	(In thousands)
December 31, 2015
Originated Portfolio:
Commercial	$	3,685	$	1,230	$	364	$	28,554	$	33,833	$	1,487,682	$	1,521,515
Commercial real estate	4,168		1,603		254		25,163		31,188		1,392,871		1,424,059
Real estate construction	—		—		—		247		247		174,299		174,546
Land development	—		—		—		274		274		10,327		10,601
Residential mortgage	1,737		—		402		5,557		7,696		1,209,279		1,216,975
Consumer installment	3,145		644		—		451		4,240		865,186		869,426
Home equity	1,767		788		1,267		1,979		5,801		585,011		590,812
Total	$	14,502	$	4,265	$	2,287	$	62,225	$	83,279	$	5,724,655	$	5,807,934
Acquired Portfolio:
Commercial	$	490	$	532	$	3,735	$	—	$	4,757	$	379,607	$	384,364
Commercial real estate	3,557		691		4,771		—		9,019		679,084		688,103
Real estate construction	—		—		—		—		—		35,685		35,685
Land development	—		—		1,154		—		1,154		10,090		11,244
Residential mortgage	1,370		—		2,081		—		3,451		209,210		212,661
Consumer installment	55		—		47		—		102		7,929		8,031
Home equity	847		78		1,007		—		1,932		121,193		123,125
Total	$	6,319	$	1,301	$	12,795	$	—	$	20,415	$	1,442,798	$	1,463,213
December 31, 2014
Originated Portfolio:
Commercial	$	4,033	$	743	$	170	$	16,418	$	21,364	$	1,234,534	$	1,255,898
Commercial real estate	7,515		1,383		—		24,966		33,864		1,170,562		1,204,426
Real estate construction	262		—		—		162		424		138,316		138,740
Land development	—		—		—		225		225		4,303		4,528
Residential mortgage	2,126		54		557		6,706		9,443		988,558		998,001
Consumer installment	3,620		512		—		500		4,632		814,746		819,378
Home equity	3,039		660		1,346		1,667		6,712		562,384		569,096
Total	$	20,595	$	3,352	$	2,073	$	50,644	$	76,664	$	4,913,403	$	4,990,067
Acquired Portfolio:
Commercial	$	133	$	—	$	5,427	$	—	$	5,560	$	93,423	$	98,983
Commercial real estate	2,014		352		11,052		—		13,418		339,804		353,222
Real estate construction	—		—		—		—		—		14,005		14,005
Land development	—		—		1,653		—		1,653		12,569		14,222
Residential mortgage	156		—		18		—		174		112,215		112,389
Consumer installment	55		3		454		—		512		9,680		10,192
Home equity	636		106		1,288		—		2,030		93,120		95,150
Total	$	2,994	$	461	$	19,892	$	—	$	23,347	$	674,816	$	698,163

Loan

Schedule of Corporation's TDRs

The following schedule presents the Corporation's TDRs at December 31, 2015 and 2014:

	Performing TDRs		Non-Performing TDRs		Nonaccrual TDRs		Total
	(In thousands)
December 31, 2015
Commercial loan portfolio	$	29,844	$	16,297	$	32,682	$	78,823
Consumer loan portfolio	17,966		3,071		3,251		24,288
Total	$	47,810	$	19,368	$	35,933	$	103,111
December 31, 2014
Commercial loan portfolio	$	29,179	$	15,271	$	32,597	$	77,047
Consumer loan portfolio	16,485		3,196		4,594		24,275
Total	$	45,664	$	18,467	$	37,191	$	101,322

Schedule providing information on performing and nonperforming TDRs

The following schedule provides information on the Corporation's TDRs that were modified during the years ended December 31, 2015, 2014 and 2013:

	Number of Loans	Pre- Modification Recorded Investment		Post- Modification Recorded Investment
	(Dollars in thousands)
Year ended December 31, 2015
Commercial loan portfolio:
Commercial	53	$	11,446	$	11,446
Commercial real estate	21	7,196		7,196
Real estate construction	2	400		400
Land development	1	305		305
Subtotal — commercial loan portfolio	77	19,347		19,347
Consumer loan portfolio (residential mortgage)	65	3,249		3,247
Total	142	$	22,596	$	22,594
Year ended December 31, 2014
Commercial loan portfolio:
Commercial	53	$	13,781	$	13,781
Commercial real estate	46	12,075		12,075
Real estate construction	—	—		—
Land development	1	72		72
Subtotal — commercial loan portfolio	100	25,928		25,928
Consumer loan portfolio (residential mortgage)	119	4,184		4,158
Total	219	$	30,112	$	30,086
Year ended December 31, 2013
Commercial loan portfolio:
Commercial	57	$	12,123	$	12,123
Commercial real estate	49	16,222		16,222
Real estate construction	4	575		575
Land development	4	1,958		1,958
Subtotal — commercial loan portfolio	114	30,878		30,878
Consumer loan portfolio (residential mortgage)	85	4,943		4,840
Total	199	$	35,821	$	35,718

Troubled debt restructurings on financing receivables with defaults payment

The following schedule includes TDRs for which there was a payment default during the years ended December 31, 2015, 2014 and 2013, whereby the borrower was past due with respect to principal and/or interest for 90 days or more, and the loan became a TDR during the twelve-month period prior to the default:

	Years Ended December 31,
	2015			2014			2013
	Number of Loans	Principal Balance at Year End		Number of Loans	Principal Balance at Year End		Number of Loans	Principal Balance at Year End
	(Dollars in thousands)
Commercial loan portfolio:
Commercial	1	$	1,206	7	$	885	23	$	2,745
Commercial real estate	5	1,016		6	2,352		8	4,278
Real estate construction	—	—		—	—		3	371
Land development	—	—		—	—		2	1,526
Subtotal — commercial loan portfolio	6	2,222		13	3,237		36	8,920
Consumer loan portfolio (residential mortgage)	3	65		12	259		22	1,826
Total	9	$	2,287	25	$	3,496	58	$	10,746

Schedule of allowance and recorded investment related to financing receivables segregated by portfolio segment

The following schedule presents, by loan portfolio segment, the changes in the allowance for the year ended December 31, 2015 and details regarding the balance in the allowance and the recorded investment in loans at December 31, 2015 by impairment evaluation method.

	Commercial Loan Portfolio			Consumer Loan Portfolio			Unallocated			Total
	(In thousands)
Changes in allowance for loan losses for the year ended December 31, 2015:
Beginning balance	$	44,156		$	28,803		$	2,724		$	75,683
Provision for loan losses	7,275			1,949			(2,724		)	6,500
Charge-offs	(6,385		)	(7,116		)	—			(13,501		)
Recoveries	2,188			2,458			—			4,646
Ending balance	$	47,234		$	26,094		$	—		$	73,328
Allowance for loan losses balance at December 31, 2015 attributable to:
Loans individually evaluated for impairment	$	6,197		$	192		$	—		$	6,389
Loans collectively evaluated for impairment	41,037			25,902			—			66,939
Loans acquired with deteriorated credit quality	—			—			—			—
Total	$	47,234		$	26,094		$	—		$	73,328
Recorded investment (loan balance) at December 31, 2015:
Loans individually evaluated for impairment	$	100,379		$	21,037		$	—		$	121,416
Loans collectively evaluated for impairment	3,030,342			2,656,176			—			5,686,518
Loans acquired with deteriorated credit quality	1,119,396			343,817			—			1,463,213
Total	$	4,250,117		$	3,021,030		$	—		$	7,271,147

The following presents, by loan portfolio segment, the changes in the allowance for the year ended December 31, 2014 and details regarding the balance in the allowance and the recorded investment in loans at December 31, 2014 by impairment evaluation method.

	Commercial Loan Portfolio			Consumer Loan Portfolio			Unallocated			Total
	(In thousands)
Changes in allowance for loan losses for the year ended December 31, 2014:
Beginning balance	$	44,482		$	30,145		$	4,445		$	79,072
Provision for loan losses	3,464			4,357			(1,721		)	6,100
Charge-offs	(6,399		)	(7,830		)	—			(14,229		)
Recoveries	2,609			2,131			—			4,740
Ending balance	$	44,156		$	28,803		$	2,724		$	75,683
Allowance for loan losses balance at December 31, 2014 attributable to:
Loans individually evaluated for impairment	$	1,003		$	335		$	—		$	1,338
Loans collectively evaluated for impairment	43,153			27,968			2,724			73,845
Loans acquired with deteriorated credit quality	—			500			—			500
Total	$	44,156		$	28,803		$	2,724		$	75,683
Recorded investment (loan balance) at December 31, 2014:
Loans individually evaluated for impairment	$	86,221		$	19,681		$	—		$	105,902
Loans collectively evaluated for impairment	2,517,371			2,366,794			—			4,884,165
Loans acquired with deteriorated credit quality	480,432			217,731			—			698,163
Total	$	3,084,024		$	2,604,206		$	—		$	5,688,230