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

3 Months Ended

Mar. 31, 2013

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

Allowance for loans based on collective and individual evaluation of impairment by loan category

The following tables bifurcates the amount of allowance allocated to each loan category based on collective impairment analysis or evaluated individually for impairment as of the periods indicated:

	March 31, 2013
	(Dollars in thousands)
	Commercial and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Residential Real Estate		Consumer Home Equity		Other Consumer		Total
Financing receivables
Ending balance: total loans by group	$	702,486	$	2,123,778	$	211,984	$	77,220	$	555,413	$	792,630	$	23,967	$	4,487,478	(1	)
Ending balance: individually evaluated for impairment	$	7,773	$	31,285	$	1,608	$	2,073	$	16,428	$	4,446	$	1,882	$	65,495
Ending balance: purchase credit impaired loans	$	—	$	20,138	$	—	$	—	$	9,509	$	375	$	—	$	30,022
Ending balance: collectively evaluated for impairment	$	694,713	$	2,072,355	$	210,376	$	75,147	$	529,476	$	787,809	$	22,085	$	4,391,961

	December 31, 2012
	(Dollars in thousands)
	Commercial and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Residential Real Estate		Consumer Home Equity		Other Consumer		Total
Financing receivables
Ending balance: total loans by group	$	687,511	$	2,122,153	$	188,768	$	78,594	$	612,881	$	802,149	$	26,955	$	4,519,011	(1	)
Ending balance: individually evaluated for impairment	$	8,575	$	33,868	$	—	$	2,279	$	15,373	$	4,435	$	2,129	$	66,659
Ending Balance: purchase credit impaired loans	$	—	$	21,853	$	—	$	—	$	9,821	$	380	$	—	$	32,054
Ending balance: collectively evaluated for impairment	$	678,936	$	2,066,432	$	188,768	$	76,315	$	587,687	$	797,334	$	24,826	$	4,420,298

(1) The amount of deferred fees included in the ending balance was $2.9 million and $3.1 million at March 31, 2013 and December 31, 2012, 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 March 31, 2013
	(Dollars in thousands)
	Commercial and Industrial			Commercial Real Estate			Commercial Construction		Small Business			Residential Real Estate			Consumer Home Equity			Other Consumer			Total
Allowance for loan losses
Beginning balance	$	13,461		$	22,598		$	2,811	$	1,524		$	2,930		$	7,703		$	807		$	51,834
Charge-offs	(423		)	(407		)	—		(145		)	(61		)	(277		)	(261		)	(1,574		)
Recoveries	136			—			—		39			—			21			150			346
Provision	269			378			328		(174		)	179			269			51			1,300
Ending balance	$	13,443		$	22,569		$	3,139	$	1,244		$	3,048		$	7,716		$	747		$	51,906
Ending balance: Individually Evaluated for Impairment	$	771		$	385		$	—	$	113		$	1,577		$	58		$	119		$	3,023
Ending balance: purchase credit impaired loans	$	—		$	—		$	—	$	—		$	—		$	—		$	—		$	—
Ending balance: Collectively Evaluated for Impairment	$	12,672		$	22,184		$	3,139	$	1,131		$	1,471		$	7,658		$	628		$	48,883

	Three Months Ended March 31, 2012
	(Dollars in thousands)
	Commercial and Industrial			Commercial Real Estate			Commercial Construction		Small Business			Residential Real Estate			Consumer Home Equity			Other Consumer			Total
Allowance for loan losses
Beginning balance	$	11,682		$	23,514		$	2,076	$	1,896		$	3,113		$	4,597		$	1,382		$	48,260
Charge-offs	(15		)	(604		)	—		(170		)	(109		)	(750		)	(297		)	(1,945		)
Recoveries	200			—			—		52			—			13			160			425
Provision	(413		)	(81		)	157		(319		)	68			2,217			(29		)	1,600
Ending balance	$	11,454		$	22,829		$	2,233	$	1,459		$	3,072		$	6,077		$	1,216		$	48,340
Ending balance: individually evaluated for impairment	$	464		$	1,757		$	—	$	184		$	1,215		$	32		$	200		$	3,852
Ending balance: collectively evaluated for impairment	$	10,990		$	21,072		$	2,233	$	1,275		$	1,857		$	6,045		$	1,016		$	44,488

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:

		March 31, 2013
Category	Risk Rating	Commercial  and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Total
		(Dollars in thousands)
Pass	1 - 6	$	665,025	$	1,943,876	$	198,476	$	69,773	$	2,877,150
Potential weakness	7	15,851		81,728		5,977		3,028		106,584
Definite weakness-loss unlikely	8	20,735		96,179		7,531		4,350		128,795
Partial loss probable	9	875		1,995		—		69		2,939
Definite loss	10	—		—		—		—		—
Total		$	702,486	$	2,123,778	$	211,984	$	77,220	$	3,115,468

		December 31, 2012
Category	Risk Rating	Commercial  and Industrial		Commercial Real Estate		Commercial Construction		Small Business		Total
		(Dollars in thousands)
Pass	1 - 6	$	647,984	$	1,928,148	$	177,693	$	71,231	$	2,825,056
Potential weakness	7	16,420		92,651		6,195		3,213		118,479
Definite weakness-loss unlikely	8	21,979		98,688		4,880		4,080		129,627
Partial loss probable	9	1,128		2,666		—		70		3,864
Definite loss	10	—		—		—		—		—
Total		$	687,511	$	2,122,153	$	188,768	$	78,594	$	3,077,026

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:

	March 31, 2013		December 31, 2012
Residential portfolio
FICO score (re-scored) (1)	735		727
LTV (re-valued) (2)	67.0	%	67.0	%
Home equity portfolio
FICO score (re-scored) (1)	763		763
LTV (re-valued) (2)	55.0	%	54.0	%

(1) The average FICO scores for March 31, 2013 are based upon rescores available from Novermber 2012 and actual score data for loans booked between December  1, 2012 and March 31, 2013. The average FICO scores for December 31, 2012 are based upon rescores available from November 2012 and actual score data for loans booked between December 1 and December 31, 2012.

(2) The combined LTV ratios for March 31, 2013 are based upon updated automated valuations as of February 2013. The combined LTV ratios for December 31, 2012 are based upon updated automated valuations as of November 30, 2011.

Summary of nonaccrual loans

The following table shows nonaccrual loans at the dates indicated:

	March 31, 2013		December 31, 2012
	(Dollars in thousands)
Commercial and industrial	$	3,188	$	2,666
Commercial real estate	7,748		6,574
Commercial construction	1,607		—
Small business	680		570
Residential real estate	11,950		11,472
Home equity	7,687		7,311
Other consumer	201		121
Total nonaccrual loans (1)	$	33,061	$	28,714

(1) Included in these amounts were $8.7 million and $6.6 million of nonaccruing TDRs at March 31, 2013 and December 31, 2012, respectively.

Age analysis of past due financing receivables

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

	March 31, 2013
	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	22	$	5,156	16	$	2,172	21	$	1,441	59	$	8,769	$	693,717	$	702,486	$	—
Commercial real estate	21	6,317		9	3,539		33	6,372		63	16,228		2,107,550		2,123,778		—
Commercial construction	—	—		—	—		1	1,608		1	1,608		210,376		211,984		—
Small business	21	439		4	195		11	431		36	1,065		76,155		77,220		—
Residential real estate	11	3,755		7	1,914		42	8,568		60	14,237		533,412		547,649		—
Residential construction	—	—		—	—		—	—		—	—		7,764		7,764		—
Home equity	30	2,331		4	125		22	1,807		56	4,263		788,367		792,630		—
Other consumer	137	757		29	141		30	214		196	1,112		22,855		23,967		30
Total	242	$	18,755	69	$	8,086	160	$	20,441	471	$	47,282	$	4,440,196	$	4,487,478	$	30

	December 31, 2012
	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	14	$	1,305	7	$	336	23	$	1,875	44	$	3,516	$	683,995	$	687,511	$	—
Commercial real estate	19	5,028		8	2,316		31	6,054		58	13,398		2,108,755		2,122,153		—
Commercial construction	—	—		—	—		—	—		—	—		188,768		188,768		—
Small business	20	750		8	94		10	320		38	1,164		77,430		78,594		—
Residential real estate	17	3,053		7	1,848		40	7,501		64	12,402		592,266		604,668		—
Residential construction	—	—		—	—		—	—		—	—		8,213		8,213		—
Home equity	32	2,756		10	632		17	1,392		59	4,780		797,369		802,149		—
Other consumer	208	1,217		32	224		28	153		268	1,594		25,361		26,955		52
Total	310	$	14,109	72	$	5,450	149	$	17,295	531	$	36,854	$	4,482,157	$	4,519,011	$	52

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:

	March 31, 2013		December 31, 2012
	(Dollars in thousands)
TDRs on accrual status	$	41,682	$	46,764
TDRs on nonaccrual	8,748		6,554
Total TDRs	$	50,430	$	53,318
Amount of specific reserves included in the allowance for loan losses associated with TDRs:	$	2,562	$	3,049
Additional commitments to lend to a borrower who has been a party to a TDR:	$	2,172	$	1,847

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
	March 31, 2013
	Number of Contracts	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)
	(Dollars in thousands)
Troubled debt restructurings
Small business	4	$	268	$	268
Residential real estate	4	1,156		1,182
Home equity	2	165		165
Other consumer	2	11		11
Total	12	$	1,600	$	1,626

	Three Months Ended
	March 31, 2012
	Number of Contracts	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment (1)
	(Dollars in thousands)
Troubled debt restructurings
Commercial & industrial	6	$	319	$	319
Commercial real estate	5	3,283		3,283
Small business	9	371		371
Residential real estate	1	117		117
Other consumer	3	86		86
Total	24	$	4,176	$	4,176

(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 as of the periods indicated:

	Three Months Ended March 31
	2013		2012
	(Dollars in thousands)
Extended maturity	$	268	$	3,842
Adjusted interest rate	—		41
Combination rate & maturity	1,347		293
Court ordered concession	11		—
Total	$	1,626	$	4,176

Troubled Debt Restructurings that 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. The Company considers a loan to have defaulted when it reaches 90 days past due.

	Three Months Ended March 31
	2013			2012
	Number of Contracts	Recorded Investment		Number of Contracts	Recorded Investment
	(Dollars in thousands)
Troubled debt restructurings that subsequently defaulted
Commercial & industrial	2	$	201	1	$	250
Commercial real estate	2	494		—	—
Small business	—	—		1	4
Other consumer	—	—		1	5
Total	4	$	695	3	$	259

Impaired loans by loan portfolio

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

	March 31, 2013
	Recorded Investment		Unpaid Principal Balance		Related Allowance
	(Dollars in thousands)
With no related allowance recorded
Commercial & industrial	$	5,229	$	5,821	$	—
Commercial real estate	13,869		14,536		—
Commercial construction	1,608		1,608		—
Small business	1,191		1,233		—
Residential real estate	2,526		2,610		—
Home equity	4,007		4,057		—
Other consumer	647		648		—
Subtotal	29,077		30,513		—
With an allowance recorded
Commercial & industrial	$	2,544	$	3,301	$	771
Commercial real estate	17,416		17,859		385
Commercial construction	—		—		—
Small business	882		927		113
Residential real estate	13,902		14,735		1,577
Home equity	439		551		58
Other consumer	1,235		1,301		119
Subtotal	36,418		38,674		3,023
Total	$	65,495	$	69,187	$	3,023

	December 31, 2012
	Recorded Investment		Unpaid Principal Balance		Related Allowance
	(Dollars in thousands)
With no related allowance recorded
Commercial & industrial	$	5,849	$	7,343	$	—
Commercial real estate	12,999		13,698		—
Commercial construction	—		—		—
Small business	1,085		1,147		—
Residential real estate	2,545		2,630		—
Home equity	4,119		4,166		—
Other consumer	700		705		—
Subtotal	27,297		29,689		—
With an allowance recorded
Commercial & industrial	$	2,726	$	2,851	$	1,084
Commercial real estate	20,869		21,438		516
Commercial construction	—		—		—
Small business	1,194		1,228		353
Residential real estate	12,828		13,601		1,302
Home equity	316		389		35
Other consumer	1,429		1,453		130
Subtotal	39,362		40,960		3,420
Total	$	66,659	$	70,649	$	3,420

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
	March 31, 2013
	Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded
Commercial & industrial	$	5,111	$	73
Commercial real estate	13,945		222
Commercial construction	1,609		13
Small business	1,241		20
Residential real estate	2,532		23
Home equity	4,019		46
Other consumer	670		13
Subtotal	29,127		410
With an allowance recorded
Commercial & industrial	$	2,760	$	40
Commercial real estate	17,381		268
Commercial construction	—		—
Small business	891		13
Residential real estate	13,930		135
Home equity	441		6
Other consumer	1,283		12
Subtotal	36,686		474
Total	$	65,813	$	884

	Three Months Ended
	March 31, 2012
	Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded
Commercial & industrial	$	3,078	$	50
Commercial real estate	20,508		362
Commercial construction	560		11
Small business	1,441		25
Residential real estate	—		—
Home equity	22		—
Other consumer	46		1
Subtotal	25,655		449
With an allowance recorded
Commercial & industrial	$	2,662	$	40
Commercial real estate	21,194		316
Commercial construction	—		—
Small business	1,209		17
Residential real estate	12,885		138
Home equity	279		5
Other consumer	1,951		19
Subtotal	40,180		535
Total	$	65,835	$	984

Certain Loans Acquired In Transfer Accounted For As Debt Securities Acquired During Period [Table Text Block]

The following table displays certain information pertaining to purchased credit impaired loans at the dated indicated:

	March 31, 2013		December 31, 2012
	(Dollars in thousands)
Outstanding balance	$	33,516	$	36,278
Carrying amount	$	30,022	$	32,054

Certain Loans Acquired in Transfer 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:

	(Dollars in thousands)
Balance at January 1, 2012	$	—
Acquisition	3,095
Accretion	(903		)
Reclassification from nonaccretable difference for loans with improved cash flows (1)	272
Balance at December 31, 2012	2,464
Balance at January 1, 2013	$	2,464
Accretion	$	(377	)
Other change in expected cash flows (2)	439
Balance at March 31, 2013	$	2,526

(1) Results in increased interest income during the period in which the loan paid off.

(2) 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).