Loans, Allowance for Loan Losses and Credit Quality (Tables)

6 Months Ended

Jun. 30, 2015

Loans, Allowance for Loan Losses and Credit Quality [Abstract]

Tabular disclosure of financing receivables bifuricated by type of impairment evaluation [Table Text Block]

The following tables bifurcate the amount of loans and the allowance allocated to each loan category based on the type of impairment analysis as of the periods indicated:

	June 30, 2015
	(Dollars in thousands)
	Commercial and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Residential Real Estate		Home Equity		Other Consumer		Total
Financing receivables ending balance:
Collectively evaluated for impairment	$	867,695	$	2,588,279	$	278,205	$	90,481	$	629,556	$	884,588	$	15,618	$	5,354,422
Individually evaluated for impairment	$	5,410	$	29,562	$	309	$	886	$	14,940	$	5,895	$	1,664	$	58,666
Purchased credit impaired loans	$	—	$	12,221	$	178	$	—	$	8,874	$	410	$	11	$	21,694
Total loans by group	$	873,105	$	2,630,062	$	278,692	$	91,367	$	653,370	$	890,893	$	17,293	$	5,434,782	(1	)

	December 31, 2014
	(Dollars in thousands)
	Commercial and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Residential Real Estate		Home Equity		Other Consumer		Total
Financing receivables ending balance:
Collectively evaluated for impairment	$	856,185	$	2,304,099	$	265,501	$	84,159	$	505,799	$	858,305	$	16,335	$	4,890,383
Individually evaluated for impairment	$	4,654	$	30,729	$	311	$	1,088	$	15,055	$	5,330	$	868	$	58,035
Purchased credit impaired loans	$	—	$	12,495	$	182	$	—	$	9,405	$	228	$	5	$	22,315
Total loans by group	$	860,839	$	2,347,323	$	265,994	$	85,247	$	530,259	$	863,863	$	17,208	$	4,970,733	(1	)

(1) The amount of net deferred fees included in the ending balance was $3.5 million and $2.8 million at June 30, 2015 and December 31, 2014, respectively.

Summary of changes in allowance for loan losses

The following tables summarize changes in allowance for loan losses by loan category for the periods indicated:

	Three Months Ended June 30, 2015
	(Dollars in thousands)
	Commercial and Industrial			Commercial Real Estate			Commercial Construction			Small Business			Residential Real Estate			Home Equity			Other Consumer			Total
Allowance for loan losses
Beginning balance	$	14,557		$	26,285		$	4,142		$	1,222		$	2,726		$	4,906		$	677		$	54,515
Charge-offs	(473		)	(67		)	—			(47		)	(17		)	(248		)	(247		)	(1,099		)
Recoveries	502			169			—			66			1			31			110			879
Provision	693			(28		)	(71		)	7			(159		)	182			76			700
Ending balance	$	15,279		$	26,359		$	4,071		$	1,248		$	2,551		$	4,871		$	616		$	54,995

	Three Months Ended June 30, 2014
	(Dollars in thousands)
	Commercial and Industrial			Commercial Real Estate			Commercial Construction		Small Business			Residential Real Estate			Home Equity			Other Consumer			Total
Allowance for loan losses
Beginning balance	$	15,601		$	24,917		$	3,570	$	1,207		$	2,829		$	4,758		$	747		$	53,629
Charge-offs	(470		)	(660		)	—		(128		)	(326		)	(308		)	(258		)	(2,150		)
Recoveries	128			197			—		92			190			55			147			809
Provision (benefit)	670			641			187		(17		)	186			464			119			2,250
Ending balance	$	15,929		$	25,095		$	3,757	$	1,154		$	2,879		$	4,969		$	755		$	54,538

	Six Months Ended June 30, 2015
	(Dollars in thousands)
	Commercial and Industrial			Commercial Real Estate			Commercial Construction		Small Business			Residential Real Estate			Home Equity			Other Consumer			Total
Allowance for loan losses
Beginning balance	$	15,573		$	25,873		$	3,945	$	1,171		$	2,834		$	4,956		$	748		$	55,100
Charge-offs	(1,034		)	(208		)	—		(196		)	(202		)	(411		)	(573		)	(2,624		)
Recoveries	881			854			—		132			46			105			301			2,319
Provision (benefit)	(141		)	(160		)	126		141			(127		)	221			140			200
Ending balance	$	15,279		$	26,359		$	4,071	$	1,248		$	2,551		$	4,871		$	616		$	54,995
Ending balance: individually evaluated for impairment	$	310		$	201		$	—	$	4		$	1,337		$	250		$	30		$	2,132
Ending balance: collectively evaluated for impairment	$	14,969		$	26,158		$	4,071	$	1,244		$	1,214		$	4,621		$	586		$	52,863
	Six Months Ended June 30, 2014
	(Dollars in thousands)
	Commercial and Industrial			Commercial Real Estate			Commercial Construction		Small Business			Residential Real Estate			Home Equity			Other Consumer			Total
Allowance for loan losses
Beginning balance	$	15,622		$	24,541		$	3,371	$	1,215		$	2,760		$	5,036		$	694		$	53,239
Charge-offs	(1,253		)	(3,582		)	—		(396		)	(454		)	(402		)	(629		)	(6,716		)
Recoveries	207			265			—		139			190			148			314			1,263
Provision (benefit)	1,353			3,871			386		196			383			187			376			6,752
Ending balance	$	15,929		$	25,095		$	3,757	$	1,154		$	2,879		$	4,969		$	755		$	54,538
Ending balance: individually evaluated for impairment	$	472		$	292		$	—	$	45		$	1,599		$	273		$	49		$	2,730
Ending balance: collectively evaluated for impairment	$	15,457		$	24,803		$	3,757	$	1,109		$	1,280		$	4,696		$	706		$	51,808

Internal risk-rating categories for the Company's commercial portfolio

The following table details the amount of outstanding principal balances relative to each of the risk-rating categories for the Company’s commercial portfolio:

		June 30, 2015
Category	Risk Rating	Commercial  and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Total
		(Dollars in thousands)
Pass	1 - 6	$	803,026	$	2,488,514	$	268,628	$	87,815	$	3,647,983
Potential weakness	7	50,448		77,276		9,530		2,790		140,044
Definite weakness-loss unlikely	8	19,540		63,069		534		684		83,827
Partial loss probable	9	91		1,203		—		78		1,372
Definite loss	10	—		—		—		—		—
Total		$	873,105	$	2,630,062	$	278,692	$	91,367	$	3,873,226

		December 31, 2014
Category	Risk Rating	Commercial  and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Total
		(Dollars in thousands)
Pass	1 - 6	$	801,578	$	2,196,109	$	248,696	$	81,255	$	3,327,638
Potential weakness	7	37,802		82,372		15,464		2,932		138,570
Definite weakness-loss unlikely	8	20,241		67,571		1,834		949		90,595
Partial loss probable	9	1,218		1,271		—		111		2,600
Definite loss	10	—		—		—		—		—
Total		$	860,839	$	2,347,323	$	265,994	$	85,247	$	3,559,403

Weighted average FICO scores and the weighted average combined LTV ratio

The following table shows the weighted average FICO scores and the weighted average combined LTV ratios as of the periods indicated below:

	June 30, 2015		December 31, 2014
Residential portfolio
FICO score (re-scored)(1)	741		739
LTV (re-valued)(2)	60.3	%	67.1	%
Home equity portfolio
FICO score (re-scored)(1)	764		764
LTV (re-valued)(2)	50.5	%	53.6	%

(1) The average FICO scores for June 30, 2015 are based upon rescores available from May 31, 2015 and origination score data for loans booked between June 1 and June 30, 2015. The average FICO scores for December 31, 2014 are based upon rescores available from November 30, 2014 and origination score data for loans booked between December 1, 2014 and December 31, 2014.

(2) The combined LTV ratios for June 30, 2015 are based upon updated automated valuations as of March 31, 2015 and origination value data for loans booked between April 1, 2015 and June 30, 2015. The combined LTV ratios for December 31, 2014 are based upon updated automated valuations as of February 28, 2013 and actual score data for loans booked from March 1, 2013 through December 31, 2014. For home equity loans and lines in a subordinate lien, the LTV data represents a combined LTV, taking into account the senior lien data for loans and lines.

Summary of nonaccrual loans

The following table shows nonaccrual loans at the dates indicated:

	June 30, 2015		December 31, 2014
	(Dollars in thousands)
Commercial and industrial	$	3,767	$	2,822
Commercial real estate	6,515		7,279
Commercial construction	309		311
Small business	198		246
Residential real estate	7,982		8,697
Home equity	7,238		8,038
Other consumer	37		—
Total nonaccrual loans(1)	$	26,046	$	27,393

(1) Included in these amounts were $5.6 million and $5.2 million of nonaccruing TDRs at June 30, 2015 and December 31, 2014, respectively.

Foreclosed Residential Real Estate Property [Table Text Block]

The following table shows information regarding foreclosed residential real estate property at the date indicated:

	June 30, 2015
	(Dollars in thousands)
Foreclosed residential real estate property held by the creditor	$	1,390
Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure	$	2,199

Age analysis of past due financing receivables

The following table shows the age analysis of past due financing receivables as of the dates indicated:

	June 30, 2015
	30-59 days			60-89 days			90 days or more			Total Past Due					Total Financing Receivables		Recorded Investment >90 Days and Accruing
	Number of Loans	Principal Balance		Number of Loans	Principal Balance		Number of Loans	Principal Balance		Number of Loans	Principal Balance		Current
	(Dollars in thousands)
Loan Portfolio
Commercial and industrial	11	$	1,528	5	$	1,423	11	$	2,951	27	$	5,902	$	867,203	$	873,105	$	—
Commercial real estate	12	3,052		7	3,792		19	4,442		38	11,286		2,618,776		2,630,062		—
Commercial construction	—	—		—	—		1	309		1	309		278,383		278,692		—
Small business	7	143		2	2		9	85		18	230		91,137		91,367		—
Residential real estate	8	1,030		5	855		25	3,780		38	5,665		647,705		653,370		104
Home equity	16	688		11	692		18	1,582		45	2,962		887,931		890,893		—
Other consumer	25	150		8	10		7	17		40	177		17,116		17,293		—
Total	79	$	6,591	38	$	6,774	90	$	13,166	207	$	26,531	$	5,408,251	$	5,434,782	$	104

	December 31, 2014
	30-59 days			60-89 days			90 days or more			Total Past Due					Total Financing Receivables		Recorded Investment >90 Days and Accruing
	Number of Loans	Principal Balance		Number of Loans	Principal Balance		Number of Loans	Principal Balance		Number of Loans	Principal Balance		Current
	(Dollars in thousands)
Loan Portfolio
Commercial and industrial	18	$	3,192	10	$	1,007	19	$	2,320	47	$	6,519	$	854,320	$	860,839	$	—
Commercial real estate	19	13,428		6	1,480		16	4,225		41	19,133		2,328,190		2,347,323		—
Commercial construction	1	506		—	—		1	311		2	817		265,177		265,994		—
Small business	7	21		8	113		7	173		22	307		84,940		85,247		—
Residential real estate	13	1,670		10	1,798		36	4,826		59	8,294		521,965		530,259		106
Home equity	20	1,559		7	307		23	2,402		50	4,268		859,595		863,863		—
Other consumer	34	233		6	20		8	13		48	266		16,942		17,208		13
Total	112	$	20,609	47	$	4,725	110	$	14,270	269	$	39,604	$	4,931,129	$	4,970,733	$	119

Summary of Troubled Debt Restructuring and other pertinent information

The following table shows the Company’s total TDRs and other pertinent information as of the dates indicated:

	June 30, 2015		December 31, 2014
	(Dollars in thousands)
TDRs on accrual status	$	36,750	$	38,382
TDRs on nonaccrual	5,623		5,248
Total TDRs	$	42,373	$	43,630
Amount of specific reserves included in the allowance for loan losses associated with TDRs:	$	1,872	$	2,004
Additional commitments to lend to a borrower who has been a party to a TDR:	$	1,522	$	1,400

Change in investment recorded subsequent to modifications

The following table shows the modifications which occurred during the periods indicated and the change in the recorded investment subsequent to the modifications occurring:

	Three Months Ended					Six Months Ended
	June 30, 2015					June 30, 2015
	Number of Contracts	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)		Number of Contracts	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)
	(Dollars in thousands)
Troubled debt restructurings
Commercial and industrial	7	$	1,197	$	1,197	10	$	1,353	$	1,353
Commercial real estate	4	2,071		2,071		5	2,310		2,310
Small business	3	116		116		5	166		166
Residential real estate	—	—		—		3	157		157
Home equity	1	31		31		3	215		215
Total	15	$	3,415	$	3,415	26	$	4,201	$	4,201

	Three Months Ended					Six Months Ended
	June 30, 2014					June 30, 2014
	Number of Contracts	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)		Number of Contracts	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)
	(Dollars in thousands)
Troubled debt restructurings
Commercial and industrial	3	$	399	$	399	12	$	824	$	824
Commercial real estate	—	—		—		6	1,882		1,882
Small business	1	117		117		2	174		174
Residential real estate	—	—		—		2	542		513
Home equity	3	520		520		4	616		616
Other consumer	—	—		—		1	8		8
Total	7	$	1,036	$	1,036	27	$	4,046	$	4,017

(1) The post-modification balances represent the balance of the loan on the date of modifications. These amounts may show an increase when modifications include a capitalization of interest.

Post modification balance of Troubled Debt Restructuring

The following table shows the Company’s post-modification balance of TDRs listed by type of modification during the period indicated:

	Three Months Ended June 30				Six Months Ended June 30
	2015		2014		2015		2014
	(Dollars in thousands)				(Dollars in thousands)
Extended maturity	$	1,005	$	633	$	1,648	$	1,640
Adjusted interest rate	—		—		—		728
Combination rate & maturity	2,410		403		2,523		1,670
Court ordered concession	—		—		30		8
Total	$	3,415	$	1,036	$	4,201	$	4,046

Troubled Debt Restructurings that subsequently defaulted

The following table shows loans that have been modified during the past twelve months which have subsequently defaulted during the periods indicated.

	Three Months Ended June 30
	2015			2014
	Number of Contracts	Recorded Investment		Number of Contracts	Recorded Investment
	(Dollars in thousands)
Troubled debt restructurings that subsequently defaulted
Commercial real estate	—	$	—	1	$	73
Residential real estate	—	—		1	136
	—	$	—	2	$	209
	Six Months Ended June 30
	2015			2014
	Number of Contracts	Recorded Investment		Number of Contracts	Recorded Investment
	(Dollars in thousands)
Troubled debt restructurings that subsequently defaulted
Commercial real estate	2	$	880	2	$	249
Commercial and industrial	3	339		—	—
Residential real estate	—	—		1	136
	5	$	1,219	3	$	385

Impaired loans by loan portfolio

The tables below set forth information regarding the Company’s impaired loans by loan portfolio at the dates indicated:

	June 30, 2015
	Recorded Investment		Unpaid Principal Balance		Related Allowance
	(Dollars in thousands)
With no related allowance recorded
Commercial and industrial	$	2,785	$	2,914	$	—
Commercial real estate	14,379		15,352		—
Commercial construction	309		310		—
Small business	452		492		—
Residential real estate	3,357		3,469		—
Home equity	4,565		4,621		—
Other consumer	1,199		1,208		—
Subtotal	27,046		28,366		—
With an allowance recorded
Commercial and industrial	$	2,625	$	2,769	$	310
Commercial real estate	15,183		15,332		201
Small business	434		462		4
Residential real estate	11,583		12,677		1,337
Home equity	1,330		1,467		250
Other consumer	465		479		30
Subtotal	31,620		33,186		2,132
Total	$	58,666	$	61,552	$	2,132

	December 31, 2014
	Recorded Investment		Unpaid Principal Balance		Related Allowance
	(Dollars in thousands)
With no related allowance recorded
Commercial and industrial	$	3,005	$	3,278	$	—
Commercial real estate	15,982		17,164		—
Commercial construction	311		311		—
Small business	692		718		—
Residential real estate	2,439		2,502		—
Home equity	4,169		4,221		—
Other consumer	338		341		—
Subtotal	26,936		28,535		—
With an allowance recorded
Commercial and industrial	$	1,649	$	1,859	$	412
Commercial real estate	14,747		15,514		197
Small business	396		458		7
Residential real estate	12,616		13,727		1,500
Home equity	1,161		1,264		262
Other consumer	530		530		38
Subtotal	31,099		33,352		2,416
Total	$	58,035	$	61,887	$	2,416

Interest income recognized on impaired loans

The following tables set forth information regarding interest income recognized on impaired loans, by portfolio, for the periods indicated:

	Three Months Ended				Six Months Ended
	June 30, 2015				June 30, 2015
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded
Commercial and industrial	$	2,842	$	40	$	2,927	$	81
Commercial real estate	14,467		227		15,044		471
Commercial construction	310		3		311		7
Small business	459		6		471		13
Residential real estate	3,385		40		3,403		79
Home equity	4,585		51		4,613		102
Other consumer	1,204		6		1,074		11
Subtotal	27,252		373		27,843		764
With an allowance recorded
Commercial and industrial	$	2,712	$	31	$	2,749	$	62
Commercial real estate	15,231		204		15,292		406
Small business	442		7		453		15
Residential real estate	11,608		128		11,662		295
Home equity	1,336		16		1,345		31
Other consumer	472		5		490		9
Subtotal	31,801		391		31,991		818
Total	$	59,053	$	764	$	59,834	$	1,582

	Three Months Ended				Six Months Ended
	June 30, 2014				June 30, 2014
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded
Commercial and industrial	$	4,449	$	60	$	4,774	$	123
Commercial real estate	16,216		246		16,342		490
Small business	1,051		16		1,076		32
Residential real estate	2,415		24		2,426		50
Home equity	4,431		51		4,465		103
Other consumer	363		6		374		13
Subtotal	28,925		403		29,457		811
With an allowance recorded
Commercial and industrial	$	2,808	$	40	$	2,906	$	81
Commercial real estate	14,523		205		14,748		413
Small business	449		8		462		16
Residential real estate	13,449		132		13,563		264
Home equity	1,102		10		1,109		17
Other consumer	686		6		707		12
Subtotal	33,017		401		33,495		803
Total	$	61,942	$	804	$	62,952	$	1,614

Certain Loans Acquired In Transfer Accounted For As Debt Securities Acquired During Period

The following table displays certain information pertaining to PCI loans at the dates indicated:

	June 30, 2015		December 31, 2014
	(Dollars in thousands)
Outstanding balance	$	23,724	$	25,279
Carrying amount	$	21,694	$	22,315

Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule

The following table summarizes activity in the accretable yield for the PCI loan portfolio:

	Six Months Ended June 30
	2015			2014
	(Dollars in thousands)
Beginning balance	$	2,974		$	2,514
Acquisition	319			—
Accretion	(1,546		)	(1,055		)
Other change in expected cash flows (1)	700			2,192
Reclassification from nonaccretable difference for loans which have paid off (2)	80			194
Ending balance	$	2,527		$	3,845

(1) Represents changes in cash flows expected to be collected and resulting in increased interest income as a prospective yield adjustment over the remaining life of the loan(s).

(2) Results in increased interest income during the period in which the loan paid off at amount greater than originally expected.