LOANS, ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY (Tables)

12 Months Ended

Dec. 31, 2014

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

Schedule of Allowance for Loan Losses

The following table summarizes changes in the allowance for loan losses by loan category and bifurcates the amount of allowance allocated to each loan category based on collective impairment analysis and loans evaluated individually for impairment:

	December 31, 2014
	Commercial and Industrial			Commercial Real Estate			Commercial Construction			Small Business			Residential Real Estate			Home Equity			Other Consumer			Total
	(Dollars in thousands)
Allowance for loan losses
Beginning balance	$	15,622		$	24,541		$	3,371		$	1,215		$	2,760		$	5,036		$	694		$	53,239
Charge-offs	(2,097		)	(5,454		)	—			(605		)	(826		)	(750		)	(1,215		)	(10,947		)
Recoveries	462			404			—			275			424			249			591			2,405
Provision	1,586			6,382			574			286			476			421			678			10,403
Ending balance	$	15,573		$	25,873		$	3,945		$	1,171		$	2,834		$	4,956		$	748		$	55,100
Ending balance: individually evaluated for impairment	$	412		$	197		$	—		$	7		$	1,500		$	262		$	38		$	2,416
Ending balance: collectively evaluated for impairment	$	15,161		$	25,676		$	3,945		$	1,164		$	1,334		$	4,694		$	710		$	52,684
Financing receivables ending balance:
Individually evaluated for impairment	$	4,654		$	30,729		$	311		$	1,088		$	15,055		$	5,330		$	868		$	58,035
Collectively evaluated for impairment	856,185			2,304,099			265,501			84,159			505,799			858,305			16,335			4,890,383
Purchase 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)
	December 31, 2013
	Commercial and Industrial			Commercial Real Estate			Commercial Construction			Small Business			Residential Real Estate			Home Equity			Other Consumer			Total
	(Dollars in thousands)
Allowance for loan losses
Beginning balance	$	13,461		$	22,598		$	2,811		$	1,524		$	2,930		$	7,703		$	807		$	51,834
Charge-offs	(2,683		)	(3,587		)	(308		)	(773		)	(622		)	(1,370		)	(1,175		)	(10,518		)
Recoveries	272			206			100			279			143			135			588			1,723
Provision	$	4,572		$	5,324		$	768		$	185		$	309		$	(1,432	)	$	474		$	10,200
Ending balance	$	15,622		$	24,541		$	3,371		$	1,215		$	2,760		$	5,036		$	694		$	53,239
Ending balance: individually evaluated for impairment	$	1,150		$	765		$	—		$	109		$	1,564		$	116		$	70		$	3,774
Ending balance: collectively evaluated for impairment	$	14,472		$	23,776		$	3,371		$	1,106		$	1,196		$	4,920		$	624		$	49,465
Financing receivables ending balance:
Individually evaluated for impairment	$	9,148		$	39,516		$	100		$	1,903		$	15,200		$	4,890		$	1,298		$	72,055
Collectively evaluated for impairment	775,053			2,191,132			223,562			75,337			515,854			816,925			18,845			4,616,708
Purchase credit impaired loans	1			18,612			197			—			10,389			326			19			29,544
Total loans by group	$	784,202		$	2,249,260		$	223,859		$	77,240		$	541,443		$	822,141		$	20,162		$	4,718,307		(1)

	December 31, 2012
	Commercial and Industrial			Commercial Real Estate			Commercial Construction		Small Business			Residential Real Estate			Home Equity			Other Consumer			Total
	(Dollars in thousands)
Allowance for loan losses
Beginning balance	$	11,682		$	23,514		$	2,076	$	1,896		$	3,113		$	4,597		$	1,382		$	48,260
Charge-offs	(6,191		)	(4,348		)	—		(616		)	(1,094		)	(3,178		)	(1,165		)	(16,592		)
Recoveries	963			188			—		134			151			93			581			2,110
Provision	7,007			3,244			735		110			760			6,191			9			18,056
Ending balance	$	13,461		$	22,598		$	2,811	$	1,524		$	2,930		$	7,703		$	807		$	51,834
Ending balance: individually evaluated for impairment	$	1,084		$	516		$	—	$	353		$	1,302		$	35		$	130		$	3,420
Ending balance: collectively evaluated for impairment	$	12,377		$	22,082		$	2,811	$	1,171		$	1,628		$	7,668		$	677		$	48,414
Financing receivables ending balance:
Individually evaluated for impairment	$	8,575		$	33,868		$	—	$	2,279		$	15,373		$	4,435		$	2,129		$	66,659
Collectively evaluated for impairment	678,936			2,066,432			188,768		76,315			587,687			797,334			24,826			4,420,298
Purchase credit impaired loans	—			21,853			—		—			9,821			380			—			32,054
Total loans by group	$	687,511		$	2,122,153		$	188,768	$	78,594		$	612,881		$	802,149		$	26,955		$	4,519,011		(1)

(1) The amount of net deferred fees included in the ending balance was $2.8 million, $2.3 million, and $3.1 million at December 31, 2014, 2013, and 2012, respectively.

Schedule of Internal Risk-Rating Categories for the Company's Commercial Portfolio

The following table details the internal risk-rating categories for the Company’s commercial portfolio:

		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	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
		December 31, 2013
Category	Risk Rating	Commercial and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Total
		(Dollars in thousands)
Pass	1 - 6	$	736,996	$	2,068,995	$	210,372	$	71,514	$	3,087,877
Potential weakness	7	21,841		91,984		8,608		3,031		125,464
Definite weakness	8	24,409		85,767		4,779		2,552		117,507
Partial loss probable	9	956		2,514		100		143		3,713
Definite loss	10	—		—		—		—		—
Total		$	784,202	$	2,249,260	$	223,859	$	77,240	$	3,334,561

Schedule of Weighted Average FICO Scores and Weighted Average Combined LTV Ratio

	December 31
	2014		2013
Residential portfolio
FICO score (re-scored)(1)	739		738
LTV (re-valued)(2)	67.1	%	67.0	%
Home equity portfolio
FICO score (re-scored)(1)	764		763
LTV (re-valued)(2)	53.6	%	53.0	%

(1) The average FICO scores above are based upon rescores available from November and origination score data for loans booked between December 1 and December 31, for the years indicated.

(2) The combined LTV ratios for December 31, 2014 and 2013 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.

Schedule of Nonaccrual Loans

The following table shows nonaccrual loans at the dates indicated:

	December 31
	2014		2013
	(Dollars in thousands)
Commercial and industrial	$	2,822	$	4,178
Commercial real estate	7,279		11,734
Commercial construction	311		100
Small business	246		633
Residential real estate	8,697		10,329
Home equity	8,038		7,068
Other consumer	—		92
Total nonaccrual loans(1)	$	27,393	$	34,134

(1) Included in these amounts were $5.2 million and $7.5 million nonaccruing TDRs at December 31, 2014 and 2013, respectively.

Schedule of the Age Analysis of Past Due Financing Receivables

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

	December 31, 2014
	30-59 days			60-89 days			90 days or more			Total Past Due			Current		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
	(Dollars in thousands)
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

	December 31, 2013
	30-59 days			60-89 days			90 days or more			Total Past Due			Current		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
	(Dollars in thousands)
Commercial and industrial	9	$	743	6	$	327	20	$	3,763	35	$	4,833	$	779,369	$	784,202	$	—
Commercial real estate	21	8,643		2	356		30	8,155		53	17,154		2,232,106		2,249,260		—
Commercial construction	1	847		—	—		1	100		2	947		222,912		223,859		—
Small business	18	353		6	227		14	247		38	827		76,413		77,240		—
Residential real estate	23	2,903		8	1,630		39	6,648		70	11,181		530,262		541,443		462
Home equity	27	1,922		8	852		23	2,055		58	4,829		817,312		822,141		—
Other consumer	110	514		30	106		34	148		174	768		19,394		20,162		63
Total	209	$	15,925	60	$	3,498	161	$	21,116	430	$	40,539	$	4,677,768	$	4,718,307	$	525

Schedule of Troubled Debt Restructuring and Other Pertinent Information

	December 31
	2014		2013
	(Dollars in thousands)
TDRs on accrual status	$	38,382	$	38,410
TDRs on nonaccrual status	5,248		7,454
Total TDRs	$	43,630	$	45,864
Amount of specific reserves included in the allowance for loan loss associated with TDRs:	$	2,004	$	2,474
Additional commitments to lend to a borrower who has been a party to a TDR:	$	1,400	$	1,877

Schedule of Troubled Debt Restructuring Modifications

	Years Ended December 31
	2014
	Number of Contracts	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment(1)
	(Dollars in thousands)
Commercial & industrial	12	$	681	$	681
Commercial real estate	13	4,329		4,329
Small business	5	133		133
Residential real estate	9	1,535		1,568
Home equity	11	923		926
Other consumer	1	8		8
Total	51	$	7,609	$	7,645
	2013
Commercial & industrial	11	$	732	$	732
Commercial real estate	9	8,100		8,100
Small business	12	556		556
Residential real estate	9	2,401		2,427
Home equity	17	1,347		1,347
Other consumer	9	27		27
Total	67	$	13,163	$	13,189
	2012
Commercial & industrial	18	$	3,372	$	3,372
Commercial real estate	15	7,121		7,121
Small business	14	621		621
Residential real estate	20	3,495		3,499
Home equity	20	1,195		1,198
Other consumer	33	328		329
Total	120	$	16,132	$	16,140

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

Schedule of Post-Modification Balance of Troubled Debt Restructuring by Type of Modification

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

	Years Ended December 31
	2014		2013		2012
	(Dollars in thousands)
Extended maturity	$	3,441	$	3,582	$	5,867
Adjusted interest rate	727		—		2,182
Combination rate & maturity	2,640		8,917		5,007
Court ordered concession	837		690		3,084
Total	$	7,645	$	13,189	$	16,140

Schedule of Troubled Debt Restructurings Which Have Subsequently Defaulted

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

	Years Ended December 31
	2014			2013			2012
	Number of Contracts	Recorded Investment		Number of Contracts	Recorded Investment		Number of Contracts	Recorded Investment
	(Dollars in thousands)
Troubled debt restructurings that subsequently defaulted
Commercial & industrial	2	$	196	—	$	—	1	$	231
Commercial real estate	—	—		1	176		3	696
Residential real estate	3	214		—	—		1	238
Other consumer	—	—		1	1		—	—
Total	5	$	410	2	$	177	5	$	1,165

Schedule of Impaired Loans by Loan Portfolio

The table below sets forth information regarding the Company’s impaired loans as of the dates indicated:

	Years Ended December 31
	2014
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded
Commercial & industrial	$	3,005	$	3,278	$	—	$	4,557	$	258
Commercial real estate	15,982		17,164		—		16,703		1,025
Commercial construction	311		311		—		311		13
Small business	692		718		—		772		45
Residential real estate	2,439		2,502		—		2,493		102
Home equity	4,169		4,221		—		4,264		198
Other consumer	338		341		—		364		24
Subtotal	26,936		28,535		—		29,464		1,665
With an allowance recorded
Commercial & industrial	$	1,649	$	1,859	$	412	$	2,032	$	98
Commercial real estate	14,747		15,514		197		15,650		842
Commercial construction	—		—		—		—		—
Small business	396		458		7		456		32
Residential real estate	12,616		13,727		1,500		12,817		537
Home equity	1,161		1,264		262		1,203		46
Other consumer	530		530		38		580		22
Subtotal	31,099		33,352		2,416		32,738		1,577
Total	$	58,035	$	61,887	$	2,416	$	62,202	$	3,242
	2013
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded
Commercial & industrial	$	7,147	$	7,288	$	—	$	7,338	$	338
Commercial real estate	14,283		15,891		—		15,728		1,075
Commercial construction	100		408		—		1,105		43
Small business	1,474		1,805		—		1,854		121
Residential real estate	1,972		2,026		—		2,021		95
Home equity	4,263		4,322		—		4,335		202
Other consumer	446		446		—		515		41
Subtotal	29,685		32,186		—		32,896		1,915
With an allowance recorded
Commercial & industrial	$	2,001	$	2,045	$	1,150	$	2,572	$	125
Commercial real estate	25,233		25,377		765		25,595		1,326
Commercial construction	—		—		—		—		—
Small business	429		462		109		459		28
Residential real estate	13,228		14,197		1,564		13,405		515
Home equity	627		694		116		642		26
Other consumer	852		856		70		954		33
Subtotal	42,370		43,631		3,774		43,627		2,053
Total	$	72,055	$	75,817	$	3,774	$	76,523	$	3,968

	2012
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded
Commercial & industrial	$	5,849	$	7,343	$	—	$	6,993	$	391
Commercial real estate	12,999		13,698		—		13,984		952
Commercial construction	—		—		—		—		—
Small business	1,085		1,147		—		1,217		80
Residential real estate	2,545		2,630		—		2,589		118
Home equity	4,119		4,166		—		4,190		195
Other consumer	700		705		—		858		72
Subtotal	27,297		29,689		—		29,831		1,808
With an allowance recorded
Commercial & industrial	$	2,726	$	2,851	$	1,084	$	2,883	$	143
Commercial real estate	20,869		21,438		516		21,678		1,340
Commercial construction	—		—		—		—		—
Small business	1,194		1,228		353		1,255		77
Residential real estate	12,828		13,601		1,302		13,014		560
Home equity	316		389		35		324		23
Other consumer	1,429		1,453		130		1,610		60
Subtotal	39,362		40,960		3,420		40,764		2,203
Total	$	66,659	$	70,649	$	3,420	$	70,595	$	4,011

Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block]

The following is a summary of these PCI loans associated with the acquisition as of the date acquired:

	(Dollars in thousands)
Contractually required principal and interest at acquisition	$	47,548
Contractual cash flows not expected to be collected	(8,733		)
Expected cash flows at acquisition	38,815
Interest component of expected cash flows	(3,095		)
Basis in PCI loans at acquisition - estimated fair value	$	35,720

The following tables display certain information pertaining to purchased credit impaired loans at the dates indicated:

		Mayflower Acquisition		Central Acquisition
		November 15, 2013		November 9, 2012
		(Dollars in thousands)
Contractually required principal and interest payments receivable	(1)	$	4,440	$	47,548
Less: expected cash flows	(1)	3,144		38,815
Initial nonaccretable difference		$	1,296	$	8,733
Expected cash flows	(1)	$	3,144	$	38,815
Less: fair value (initial carrying amount)		2,758		35,720
Accretable Yield		$	386	$	3,095

(1) Reflective of anticipated prepayments.

	December 31
	2014		2013
	(Dollars in thousands)
Outstanding balance	$	25,279	$	33,555
Carrying amount	$	22,315	$	29,544

Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Table Text Block]

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

	2014			2013
	(Dollars in thousands)
Beginning balance	$	2,514		$	2,464
Acquisition	—			386
Accretion	(2,299		)	(1,812		)
Other change in expected cash flows (1)	2,565			1,142
Reclassification from nonaccretable difference for loans which have paid off (2)	194			334
Ending balance	$	2,974		$	2,514

(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 income during the period when a loan pays off at amount greater than originally expected.

Schedule of Loans to Insiders

Annual activity consists of the following at the periods indicated:

	2014			2013
	(Dollars in thousands)
Principal balance of loans outstanding at beginning of year	$	52,510		$	47,859
Loan advances	21,310			107,461
Loan payments/payoffs	(21,913		)	(102,810		)
Reduction for former directors (1)	(25,913		)	—
Principal balance of loans outstanding at end of year	$	25,994		$	52,510

(1) Amounts relate to loans to individuals who are no longer current directors of the Company and therefore are not deemed to be an insider.