Bryn Mawr Bank (BMTC) 10-Q 7 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Nov. 04, 2014
Document Information [Line Items]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'BMTC	'
Entity Registrant Name	'BRYN MAWR BANK CORP	'
Entity Central Index Key	'0000802681	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	13,732,297

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Cash and due from banks	$11,312	$13,453
Interest bearing deposits with banks	56,253	67,618
Cash and cash equivalents	67,565	81,071
Investment securities available for sale, at fair value (amortized cost of $264,224 and $287,127 as of September 30, 2014 and December 31, 2013 respectively)	265,939	285,808
Investment securities, trading	3,803	3,437
Loans held for sale	1,375	1,350
Portfolio loans and leases	1,645,238	1,547,185
Less: Allowance for loan and lease losses	-15,599	-15,515
Net portfolio loans and leases	1,629,639	1,531,670
Premises and equipment, net	32,733	31,796
Accrued interest receivable	5,661	5,728
Deferred income taxes	5,786	8,690
Mortgage servicing rights	4,796	4,750
Bank owned life insurance	20,451	20,220
Federal Home Loan Bank stock	12,889	11,654
Goodwill	32,843	32,843
Intangible assets	17,459	19,365
Other investments	4,592	4,437
Other assets	18,351	18,846
Total assets	2,123,882	2,061,665
Deposits:	'	'
Non-interest-bearing	438,221	426,640
Interest-bearing	1,172,111	1,164,707
Total deposits	1,610,332	1,591,347
Short-term borrowings	13,980	10,891
FHLB advances and other borrowings	230,574	205,644
Accrued interest payable	874	841
Other liabilities	20,513	23,044
Total liabilities	1,876,273	1,831,767
Shareholders' equity	'	'
Common stock, par value $1; authorized 100,000,000 shares; issued 16,702,510 and 16,596,869 shares as of September 30, 2014 and December 31, 2013, respectively, and outstanding of 13,730,581 and 13,650,354 as of September 30, 2014 and December 31, 2013, respectively	16,703	16,597
Paid-in capital in excess of par value	99,266	95,673
Less: Common stock in treasury at cost - 2,971,929 and 2,946,515 shares as of September 30, 2014 and December 31, 2013, respectively	-31,615	-30,764
Accumulated other comprehensive loss, net of tax benefit	-3,931	-5,565
Retained earnings	167,186	153,957
Total shareholders' equity	247,609	229,898
Total liabilities and shareholders' equity	$2,123,882	$2,061,665

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Investment securities available for sale, amortized cost	$264,224	$287,127
Common stock, par value	$1	$1
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	16,702,510	16,596,869
Common stock, shares outstanding	13,730,581	13,650,354
Common stock in treasury, shares	2,971,929	2,946,515

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest income:	'	'	'	'
Interest and fees on loans and leases	$19,710	$18,697	$58,628	$54,728
Interest on cash and cash equivalents	46	21	127	131
Interest on investment securities:	'	'	'	'
Taxable	863	967	2,705	2,653
Non-taxable	100	107	304	289
Dividends	30	28	87	91
Total interest income	20,749	19,820	61,851	57,892
Interest expense on:	'	'	'	'
Deposits	742	639	2,144	2,109
Short-term borrowings	3	5	12	12
FHLB advances and other borrowings	828	643	2,354	1,906
Total interest expense	1,573	1,287	4,510	4,027
Net interest income	19,176	18,533	57,341	53,865
Provision for loan and lease losses	550	959	1,200	2,763
Net interest income after provision for loan and lease losses	18,626	17,574	56,141	51,102
Non-interest income:	'	'	'	'
Fees for wealth management services	9,099	8,635	27,511	26,078
Service charges on deposits	663	627	1,920	1,807
Loan servicing and other fees	431	481	1,305	1,380
Net gain on sale of residential mortgage loans	440	578	1,301	3,588
Net gain on sale of investment securities available for sale	'	'	81	2
Net (loss) gain on sale of other real estate owned ("OREO")	-49	-1	171	-194
Bank owned life insurance ("BOLI") income	76	72	231	270
Other operating income	883	995	2,919	3,189
Total non-interest income	11,543	11,387	35,439	36,120
Non-interest expenses:	'	'	'	'
Salaries and wages	9,110	9,012	27,244	26,908
Employee benefits	1,652	1,896	5,440	6,433
Net gain on curtailment of nonqualified pension plan	'	'	'	-690
Occupancy and bank premises	1,881	1,646	5,497	5,124
Furniture, fixtures, and equipment	1,078	920	3,150	2,960
Advertising	310	302	1,104	1,095
Amortization of mortgage servicing rights	128	187	371	617
Net (recovery) impairment of mortgage servicing rights	-3	33	-14	13
Amortization of intangible assets	633	658	1,906	1,978
FDIC insurance	265	271	778	804
Due diligence and merger-related expenses	775	328	1,416	1,730
Early extinguishment of debt - costs and premiums	'	'	'	347
Professional fees	701	636	2,208	1,875
Pennsylvania bank shares tax	412	139	1,192	669
Other operating expenses	3,019	3,295	9,194	10,219
Total non-interest expenses	19,961	19,323	59,486	60,082
Income before income taxes	10,208	9,638	32,094	27,140
Income tax expense	3,702	3,237	11,295	9,167
Net income	$6,506	$6,401	$20,799	$17,973
Basic earnings per common share	$0.48	$0.48	$1.54	$1.35
Diluted earnings per common share	$0.47	$0.47	$1.50	$1.33
Dividends declared per share	$0.19	$0.17	$0.55	$0.51
Weighted-average basic shares outstanding	13,600,348	13,336,799	13,539,327	13,274,801
Dilutive shares	272,516	275,343	294,114	244,302
Adjusted weighted-average diluted shares	13,872,864	13,612,142	13,833,441	13,519,103

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income	$6,506	$6,401	$20,799	$17,973
Net change in unrealized gains (losses) on investment securities available for sale:	'	'	'	'
Net unrealized (losses) gains arising during the period, net of tax (benefit) expense of $(227), $26, $1,090 and $(1,742), respectively	-421	50	2,025	-3,236
Reclassification adjustment for net (gains) losses on sales realized in net income, net of tax expense (benefit) of $0, $0, $28 and $1, respectively	'	'	-53	-1
Unrealized investment (losses) gains, net of tax (benefit) expense of $(227), $26, $1,062 and $(1,743), respectively	-421	50	1,972	-3,237
Net change in fair value of derivative used for cash flow hedge:	'	'	'	'
Change in fair value of hedging instruments, net of tax (benefit) expense of $(4), $0, $(257) and $324, respectively	-8	'	-477	601
Net change in unfunded pension liability:	'	'	'	'
Change in unfunded pension liability related to unrealized loss, prior service cost and transition obligation, net of tax expense of $25, $133, $74 and $399, respectively	46	246	139	741
Change in unfunded pension liability related to curtailment, net of tax expense of $0, $0, $0 and $627, respectively	'	'	'	1,164
Total change in unfunded pension liability, net of tax expense of $25, $133, $74 and $1,026 respectively	46	246	139	1,905
Total other comprehensive (loss) income	-383	296	1,634	-731
Total comprehensive income	$6,123	$6,697	$22,433	$17,242

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net unrealized (losses) gains arising during the period, tax (benefit) expense	($227)	$26	$1,090	($1,742)
Reclassification adjustment for net (gains) losses on sales realized in net income, net of tax expense (benefit)	0	0	28	1
Unrealized investment (losses) gains,net of tax (benefit) expense	-227	26	1,062	-1,743
Change in fair value of hedging instruments, net of tax (expense) benefit	-4	0	-257	324
Change in unfunded pension liability related to unrealized loss, prior service cost and transition obligation, tax expense	25	133	74	399
Change in unfunded pension liability related to curtailment, net of tax expense	0	0	0	627
Total Change in unfunded pension liability, tax expense	$25	$133	$74	$1,026

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Operating activities:	'	'
Net income	$20,799	$17,973
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Provision for loan and lease losses	1,200	2,763
Depreciation of fixed assets	2,401	2,108
Net amortization of investment premiums and discounts	1,786	3,253
Net gain on sale of investment securities available for sale	-81	-2
Net gain on sale of residential mortgage loans	-1,301	-3,588
Stock based compensation cost	911	615
Amortization and net impairment of mortgage servicing rights	357	630
Net accretion of fair value adjustments	-2,244	-2,560
Amortization of intangible assets	1,906	1,978
Net (gain) loss on sale of OREO	-171	194
Net increase in cash surrender value of bank owned life insurance ("BOLI")	-231	-270
Other, net	-2,454	798
Loans originated for resale	-41,192	-113,800
Proceeds from loans sold	42,065	118,633
Provision for deferred income taxes	2,025	795
Change in income taxes payable/receivable	-451	1,143
Change in accrued interest receivable	67	252
Change in accrued interest payable	33	-391
Net cash provided by operating activities	25,425	30,524
Investing activities:	'	'
Purchases of investment securities available for sale	-41,647	-91,977
Proceeds from maturity of investment securities and paydowns of mortgage-related securities	29,230	48,369
Proceeds from sale of investment securities available for sale	4,165	532
Net change in FHLB stock	-1,235	-1,829
Proceeds from calls of investment securities	29,450	31,287
Net change in other investments	-155	9
Net portfolio loan and lease originations	-98,144	-102,172
Purchases of premises and equipment	-3,422	-2,458
Capitalize OREO costs	'	-485
Proceeds from sale of OREO	1,325	581
Net cash used in investing activities	-80,433	-118,143
Financing activities:	'	'
Change in deposits	19,004	-83,726
Change in short-term borrowings	3,089	66,185
Dividends paid	-7,597	-6,880
Change in FHLB advances and other borrowings	25,021	30,450
Payment of contingent consideration for business combinations	'	-1,050
Excess tax benefit from stock-based compensation	720	528
Proceeds from sale of treasury stock from deferred compensation plans	79	329
Net purchase of treasury stock	-920	-453
Proceeds from issuance of common stock	45	161
Proceeds from exercise of stock options	2,061	2,550
Net cash provided by financing activities	41,502	8,094
Change in cash and cash equivalents	-13,506	-79,525
Cash and cash equivalents at beginning of period	81,071	175,686
Cash and cash equivalents at end of period	67,565	96,161
Cash paid during the year for:	'	'
Income taxes	9,005	6,703
Interest	4,477	4,418
Decrease (increase) in other comprehensive loss	1,634	-731
Change in deferred tax due to change in comprehensive income	879	-393
Transfer of loans to other real estate owned	$1,193	$637

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Shareholders' Equity (USD $)	Total	Common Stock	Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Loss	Retained Earnings
In Thousands, except Share data
Beginning balance at Dec. 31, 2013	$229,898	$16,597	$95,673	($30,764)	($5,565)	$153,957
Beginning balance (in shares) at Dec. 31, 2013	'	16,596,869	'	'	'	'
Net income	20,799	'	'	'	'	20,799
Dividends declared, $0.55 per share	-7,570	'	'	'	'	-7,570
Other comprehensive income, net of tax expense of $879	1,634	'	'	'	1,634	'
Stock based compensation	911	'	911	'	'	'
Tax benefit from stock-based compensation	720	'	720	'	'	'
Net purchase of treasury stock from stock award and deferred compensation plans	-841	'	45	-886	'	'
Issuance costs - S-4 filing	-148	'	-148	'	'	'
Dividend Reinvestment and Stock Purchase Plan, shares	'	1,602	'	'	'	'
Dividend Reinvestment and Stock Purchase Plan	45	1	44	'	'	'
Share-based awards and options exercises, shares	'	104,039	'	'	'	'
Share-based awards and options exercises	2,161	105	2,021	35	'	'
Ending balance at Sep. 30, 2014	$247,609	$16,703	$99,266	($31,615)	($3,931)	$167,186
Ending balance (in shares) at Sep. 30, 2014	'	16,702,510	'	'	'	'

Consolidated_Statement_of_Chan1

Consolidated Statement of Changes in Shareholders' Equity (Parenthetical) (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014
Dividends declared, per share	$0.55
Other comprehensive income, tax expense	$879

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2014
Basis of Presentation	'
	Note 1 - Basis of Presentation
	The unaudited consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). In the opinion of Bryn Mawr Bank Corporation’s (the “Corporation”) management, all adjustments necessary for a fair presentation of the consolidated financial position and the results of operations for the interim periods presented have been included. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto in the Corporation’s Annual Report on Form 10-K for the twelve months ended December 31, 2013 (the “2013 Annual Report”).
	The results of operations for the three and nine months ended September 30, 2014 are not necessarily indicative of the results to be expected for the full year.

Earnings_per_Common_Share

Earnings per Common Share	9 Months Ended
	Sep. 30, 2014
Earnings per Common Share	'
	Note 2 - Earnings per Common Share
	Basic earnings per common share excludes dilution and is computed by dividing income available to common shareholders by the weighted-average common shares outstanding during the period. Diluted earnings per common share takes into account the potential dilution computed pursuant to the treasury stock method that could occur if stock options were exercised and converted into common stock, as well as the effect of restricted and performance shares becoming unrestricted common stock. The effects of stock options are excluded from the computation of diluted earnings per share in periods in which the effect would be anti-dilutive. All weighted average shares, actual shares and per share information in the financial statements have been adjusted retroactively for the effect of stock dividends and splits.
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
	(dollars in thousands except per share data)	2014		2013		2014		2013
	Numerator:
	Net income available to common shareholders	$	6,506	$	6,401	$	20,799	$	17,973
	Denominator for basic earnings per share – weighted average shares outstanding		13,600,348		13,336,799		13,539,327		13,274,801
	Effect of dilutive common shares		272,516		275,343		294,114		244,302
	Denominator for diluted earnings per share – adjusted weighted average shares outstanding		13,872,864		13,612,142		13,833,441		13,519,103
	Basic earnings per share	$	0.48	$	0.48	$	1.54	$	1.35
	Diluted earnings per share	$	0.47	$	0.47	$	1.5	$	1.33
	Antidilutive shares excluded from computation of average dilutive earnings per share		—		—		—		123,882

Investment_Securities

Investment Securities	9 Months Ended
	Sep. 30, 2014
Investment Securities	'
	Note 3 - Investment Securities
	The amortized cost and fair value of investment securities available for sale are as follows:
	As of September 30, 2014
	(dollars in thousands)		Amortized		Gross			Gross			Fair Value
			Cost		Unrealized			Unrealized
					Gains			Losses
	U.S. Treasury securities		$	102	$	—		$	(2	)	$	100
	Obligations of U.S. government agency securities			71,443		152			(485	)		71,110
	Obligations of state & political subdivisions			33,555		188			(48	)		33,695
	Mortgage-backed securities			104,670		1,815			(262	)		106,223
	Collateralized mortgage obligations			37,071		316			(277	)		37,110
	Other investments			17,383		329			(11	)		17,701
	Total		$	264,224	$	2,800		$	(1,085	)	$	265,939
	As of December 31, 2013
	(dollars in thousands)		Amortized		Gross			Gross			Fair Value
			Cost		Unrealized			Unrealized
					Gains			Losses
	U.S. Treasury securities		$	102	$	—		$	(3	)	$	99
	Obligations of the U.S. government and agencies			71,097		149			(1,678	)		69,568
	Obligations of state and political subdivisions			37,140		141			(304	)		36,977
	Mortgage-backed securities			119,044		1,392			(1,073	)		119,363
	Collateralized mortgage obligations			44,463		273			(493	)		44,243
	Other investments			15,281		301			(24	)		15,558
	Total		$	287,127	$	2,256		$	(3,575	)	$	285,808
	The following tables detail the amount of investment securities available for sale that were in an unrealized loss position as of the dates indicated:
	As of September 30, 2014
			Less than 12					12 Months						Total
			Months					or Longer
	(dollars in thousands)		Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
			Value		Losses			Value			Losses			Value		Losses
	U.S. Treasury securities		$	—	$	—		$	100		$	(2	)	$	100	$	(2	)
	Obligations of the U.S. government and agencies			25,963		(37	)		22,550			(448	)		48,513		(485	)
	Obligations of state and political subdivisions			2,070		(7	)		4,651			(41	)		6,721		(48	)
	Mortgage-backed securities			15,848		(58	)		14,592			(204	)		30,440		(262	)
	Collateralized mortgage obligations			8,067		(58	)		9,265			(219	)		17,332		(277	)
	Other investments			769		(11	)		—			—			769		(11	)
	Total		$	52,717	$	(171	)	$	51,158		$	(914	)	$	103,875	$	(1,085	)
	As of December 31, 2013
			Less than 12					12 Months						Total
			Months					or Longer
	(dollars in thousands)		Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
			Value		Losses			Value			Losses			Value		Losses
	U.S. Treasury securities		$	99	$	(3	)	$	—		$	—		$	99	$	(3	)
	Obligations of the U.S. government and agencies			41,201		(1,391	)		5,774			(287	)		46,975		(1,678	)
	Obligations of state and political subdivisions			13,020		(233	)		4,543			(71	)		17,563		(304	)
	Mortgage-backed securities			55,672		(972	)		2,302			(101	)		57,974		(1,073	)
	Collateralized mortgage obligations			26,395		(493	)		—			—			26,395		(493	)
	Other investments			1,494		(24	)		—			—			1,494		(24	)
	Total		$	137,881	$	(3,116	)	$	12,619		$	(459	)	$	150,500	$	(3,575	)
	Management evaluates the Corporation’s investment securities available for sale that are in an unrealized loss position in order to determine if the decline in market value is other than temporary. The available for sale investment portfolio includes debt securities issued by U.S. government agencies, U.S. government-sponsored agencies, state and local municipalities and other issuers. All fixed income investment securities in the Corporation’s available for sale investment portfolio are rated as investment grade. Factors considered in the evaluation include the current economic climate, the length of time and the extent to which the fair value has been below cost, interest rates and the bond rating of each security. The unrealized losses presented in the tables above are temporary in nature and are primarily related to market interest rates rather than the underlying credit quality of the issuers. The Corporation does not believe that these unrealized losses are other-than-temporary. The Corporation does not have the intent to sell these securities prior to their maturity or the recovery of their cost bases and believes that it is more likely than not that it will not have to sell these securities prior to their maturity or the recovery of their cost bases.
	As of September 30, 2014 and December 31, 2013, securities having fair values of $88.2 million and $94.9 million, respectively, were specifically pledged as collateral for public funds, trust deposits, the Federal Reserve Bank of Philadelphia discount window program, Federal Home Loan Bank of Pittsburgh (“FHLB”) borrowings and other purposes. The FHLB has a blanket lien on non-pledged, mortgage-related loans and securities as part of the Corporation’s borrowing agreement with the FHLB.
	The amortized cost and fair value of investment securities available for sale as of September 30, 2014 and December 31, 2013, by contractual maturity, are shown below:
			September 30, 2014					December 31, 2013
	(dollars in thousands)		Amortized		Fair			Amortized			Fair
			Cost		Value			Cost			Value
	Investment securities1:
	Due in one year or less		$	15,719	$	15,752		$	7,859		$	7,869
	Due after one year through five years			64,780		64,833			49,790			49,721
	Due after five years through ten years			26,501		26,220			51,793			50,117
	Due after ten years			—		—			797			824
	Subtotal			107,000		106,805			110,239			108,531
	Mortgage-related securities2			141,741		143,333			163,507			163,606
	Total		$	248,741	$	250,138		$	273,746		$	272,137
1	Included in the investment portfolio, but not in the table above, are mutual funds with a fair value, as of September 30, 2014 and December 31, 2013, of $15.8 million and $13.7 million, respectively, which have no stated maturity.
2	Expected maturities of mortgage-related securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
As of September 30, 2014 and December 31, 2013, the Corporation’s investment securities held in trading accounts were comprised of a deferred compensation trust which is invested in marketable securities whose diversification is at the discretion of the deferred compensation plan participants.

Loans_and_Leases

Loans and Leases	9 Months Ended
	Sep. 30, 2014
Loans and Leases	'
	Note 4 - Loans and Leases
	A. Loans and leases outstanding are detailed by category as follows:
			September 30,			December 31,
			2014			2013
	Loans held for sale		$	1,375		$	1,350
	Real estate loans:
	Commercial mortgage		$	683,558		$	625,341
	Home equity lines and loans			183,314			189,571
	Residential mortgage			314,127			300,243
	Construction			59,923			46,369
	Total real estate loans			1,240,922			1,161,524
	Commercial and industrial			342,524			328,459
	Consumer			16,810			16,926
	Leases			44,982			40,276
	Total portfolio loans and leases			1,645,238			1,547,185
	Total loans and leases		$	1,646,613		$	1,548,535
	Loans with fixed rates		$	905,050		$	850,168
	Loans with adjustable or floating rates			741,563			698,367
	Total loans and leases		$	1,646,613		$	1,548,535
	Net deferred loan origination costs included in the above loan table		$	176		$	222
	B. Components of the net investment in leases are detailed as follows:
	(dollars in thousands)		September 30,			December 31,
			2014			2013
	Minimum lease payments receivable		$	51,089		$	45,866
	Unearned lease income			(8,281	)		(7,534	)
	Initial direct costs and deferred fees			2,174			1,944
	Total		$	44,982		$	40,276
	C. Non-Performing Loans and Leases(1)
	(dollars in thousands)		September 30,			December 31,
			2014			2013
	Non-accrual loans and leases:
	Commercial mortgage		$	709		$	478
	Home equity lines and loans			1,013			1,262
	Residential mortgage			3,751			4,377
	Construction			263			830
	Commercial and industrial			2,570			3,539
	Consumer			—			20
	Leases			30			24
	Total		$	8,336		$	10,530
	(1)	Purchased credit-impaired loans, which have been recorded at their fair values at acquisition, and which are performing, are excluded from this table, with the exception of $63 thousand and $238 thousand of purchased credit-impaired loans as of September 30, 2014 and December 31, 2013, respectively, which became non-performing subsequent to acquisition.
	D. Purchased Credit-Impaired Loans
	The outstanding principal balance and related carrying amount of credit-impaired loans, for which the Corporation applies ASC 310-30, Accounting for Purchased Loans with Deteriorated Credit Quality, to account for the interest earned, as of the dates indicated, are as follows:
	(dollars in thousands)		September 30,			December 31,
			2014			2013
	Outstanding principal balance		$	12,689		$	14,293
	Carrying amount(1)		$	9,045		$	9,880
	(1)	Includes $106 thousand and $293 thousand purchased credit-impaired loans as of September 30, 2014 and December 31, 2013, respectively, for which the Corporation could not estimate the timing or amount of expected cash flows to be collected at acquisition, and for which no accretable yield is recognized. Additionally, the table above includes $63 thousand and $238 thousand of purchased credit-impaired loans as of September 30, 2014 and December 31, 2013, respectively, which became non-performing subsequent to acquisition, which are disclosed in Note 4C, above, and which also have no accretable yield.
	The following table presents changes in the accretable discount on purchased credit-impaired loans, for which the Corporation applies ASC 310-30, for the nine months ended September 30, 2014:
	(dollars in thousands)		Accretable
			Discount
	Balance, December 31, 2013		$	6,134
	Accretion			(1,219	)
	Reclassifications from nonaccretable difference			930
	Additions/adjustments			(123	)
	Disposals			(2	)
	Balance, September 30, 2014		$	5,720
	E. Age Analysis of Past Due Loans and Leases
	The following tables present an aging of the Corporation’s loan and lease portfolio as of the dates indicated:
			Accruing Loans and Leases																		Nonaccrual			Total
																					Loans and			Loans
																					Leases			and
	(dollars in thousands)		30 – 59			60 – 89			Over 89			Total Past			Current			Total						Leases
			Days			Days			Days			Due						Accruing
Past Due			Past Due			Past Due						Loans and
												Leases
As of September 30, 2014
Commercial mortgage		$	—		$	—		$	—		$	—		$	682,849		$	682,849		$	709		$	683,558
Home equity lines and loans			443			180			—			623			181,678			182,301			1,013			183,314
Residential mortgage			896			35			—			931			309,445			310,376			3,751			314,127
Construction			—			—			—			—			59,660			59,660			263			59,923
Commercial and industrial			34			136			—			170			339,784			339,954			2,570			342,524
Consumer			—			—			—			—			16,810			16,810			—			16,810
Leases			2			15			—			17			44,935			44,952			30			44,982
		$	1,375		$	366		$	—		$	1,741		$	1,635,161		$	1,636,902		$	8,336		$	1,645,238
		Accruing Loans and Leases																		Nonaccrual			Total
																				Loans and			Loans
																				Leases			and
(dollars in thousands)		30 – 59			60 – 89			Over 89			Total Past			Current			Total						Leases
		Days			Days			Days			Due						Accruing
		Past Due			Past Due			Past Due									Loans and
																	Leases
As of December 31, 2013
Commercial mortgage		$	241		$	—		$	—		$	241		$	624,622		$	624,863		$	478		$	625,341
Home equity lines and loans			209			—			—			209			188,100			188,309			1,262			189,571
Residential mortgage			773			35			—			808			295,058			295,866			4,377			300,243
Construction			—			—			—			—			45,539			45,539			830			46,369
Commercial and industrial			334			—			—			334			324,586			324,920			3,539			328,459
Consumer			2			4			—			6			16,900			16,906			20			16,926
Leases			60			60			—			120			40,132			40,252			24			40,276
		$	1,619		$	99		$	—		$	1,718		$	1,534,937		$	1,536,655		$	10,530		$	1,547,185
F. Allowance for Loan and Lease Losses (the “Allowance”)
The following tables detail the roll-forward of the Corporation’s Allowance for the three and nine months ended September 30, 2014:
(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Unallocated			Total
		Mortgage			Lines and			Mortgage						and
					Loans									Industrial
Balance, June 30, 2014		$	3,831		$	2,594		$	2,387		$	1,000		$	4,658		$	261		$	441		$	298		$	15,470
Charge-offs			(80	)		(95	)		(11	)		—			(19	)		(42	)		(246	)		—			(493	)
Recoveries			—			—			9			—			1			7			55			—			72
Provision for loan and lease losses			169			(340	)		(136	)		245			458			(43	)		199			(2	)		550
Balance, September 30, 2014		$	3,920		$	2,159		$	2,249		$	1,245		$	5,098		$	183		$	449		$	296		$	15,599
(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Unallocated			Total
		Mortgage			Lines and			Mortgage						and
					Loans									Industrial
Balance, December 31, 2013		$	3,797		$	2,204		$	2,446		$	845		$	5,011		$	259		$	604		$	349		$	15,515
Charge-offs			(100	)		(538	)		(28	)		—			(188	)		(113	)		(368	)					(1,335	)
Recoveries			1			2			21			—			55			13			127						219
Provision for loan and lease losses			222			491			(190	)		400			220			24			86			(53	)		1,200
Balance September 30, 2014		$	3,920		$	2,159		$	2,249		$	1,245		$	5,098		$	183		$	449		$	296		$	15,599
The following table details the roll-forward of the Corporation’s Allowance for the three and nine months ended September 30, 2013:
(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Unallocated			Total
		Mortgage			Lines and			Mortgage						and
					Loans									Industrial
Balance, June 30, 2013		$	4,481		$	2,109		$	1,773		$	653		$	4,295		$	218		$	551		$	364		$	14,444
Charge-offs			(19	)		(105	)		(203	)		—			(19	)		(31	)		(124	)		—			(501	)
Recoveries			—			29			5			6			20			3			62			—			125
Provision for loan and lease losses			20			153			523			9			134			68			82			(30	)		959
Balance, September 30, 2013		$	4,482		$	2,186		$	2,098		$	668		$	4,430		$	258		$	571		$	334		$	15,027
(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Unallocated			Total
		Mortgage			Lines and			Mortgage						and
					Loans									Industrial
Balance, December 31, 2012		$	3,907		$	1,857		$	2,024		$	1,019		$	4,637		$	189		$	493		$	299		$	14,425
Charge-offs			(19	)		(457	)		(203	)		(720	)		(737	)		(101	)		(258	)		—			(2,495	)
Recoveries			—			29			13			24			64			7			197			—			334
Provision for loan and lease losses			594			757			264			345			466			163			139			35			2,763
Balance, September 30, 2013		$	4,482		$	2,186		$	2,098		$	668		$	4,430		$	258		$	571		$	334		$	15,027
The following table details the allocation of the Allowance by portfolio segment based on the methodology used to evaluate the loans and leases for impairment as of September 30, 2014 and December 31, 2013:
(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Unallocated			Total
		Mortgage			Lines and			Mortgage						and
					Loans									Industrial
As of September 30, 2014
Allowance on loans and leases:
Individually evaluated for impairment		$	—		$	120		$	613		$	—		$	892		$	32		$	—		$	—		$	1,657
Collectively evaluated for impairment			3,916			2,039			1,636			1,245			4,206			151			449			296			13,938
Purchased credit-impaired(1)			4			—			—			—			—			—			—			—			4
Total		$	3,920		$	2,159		$	2,249		$	1,245		$	5,098		$	183		$	449		$	296		$	15,599
As of December 31, 2013
Allowance on loans and leases:
Individually evaluated for impairment		$	—		$	121		$	814		$	—		$	532		$	52		$	—		$	—		$	1,519
Collectively evaluated for impairment			3,797			2,083			1,632			845			4,479			207			604			349			13,996
Purchased credit-impaired(1)			—			—			—			—			—			—			—			—			—
Total		$	3,797		$	2,204		$	2,446		$	845		$	5,011		$	259		$	604		$	349		$	15,515
-1	Purchased credit-impaired loans are evaluated for impairment on an individual basis.
The following table details the carrying value for loans and leases by portfolio segment based on the methodology used to evaluate the loans and leases for impairment as of September 30, 2014 and December 31, 2013:
(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Total
		Mortgage			Lines and			Mortgage						and
					Loans									Industrial
As of September 30, 2014
Carrying value of loans and leases:
Individually evaluated for impairment		$	646		$	1,237		$	9,314		$	263		$	3,650		$	33		$	—		$	15,143
Collectively evaluated for impairment			674,272			182,064			304,784			59,615			338,557			16,777			44,982			1,621,051
Purchased credit-impaired(1)			8,640			13			29			45			317			—			—			9,044
Total		$	683,558		$	183,314		$	314,127		$	59,923		$	342,524		$	16,810		$	44,982		$	1,645,238
As of December 31, 2013
Carrying value of loans and leases:
Individually evaluated for impairment		$	236		$	1,428		$	9,860		$	1,172		$	4,758		$	52		$	—		$	17,506
Collectively evaluated for impairment			616,077			188,128			290,345			44,715			323,384			16,874			40,276			1,519,799
Purchased credit-impaired(1)			9,028			15			38			482			317			—			—			9,880
Total		$	625,341		$	189,571		$	300,243		$	46,369		$	328,459		$	16,926		$	40,276		$	1,547,185
(1)	Purchased credit-impaired loans are evaluated for impairment on an individual basis.
As part of the process of determining the Allowance for the different segments of the loan and lease portfolio, Management considers certain credit quality indicators. For the commercial mortgage, construction and commercial and industrial loan segments, periodic reviews of the individual loans are performed by both in-house staff as well as external loan reviewers. The result of these reviews is reflected in the risk grade assigned to each loan. These internally assigned grades are as follows:
•		Pass – Loans considered satisfactory with no indications of deterioration.
•		Special mention - Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date.
•		Substandard - Loans classified as substandard are inadequately protected by the current net worth and payment capacity of the obligor or of the collateral pledged, if any. Substandard loans have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected.
•		Doubtful - Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable.
In addition, for the remaining segments of the loan and lease portfolio, which include residential mortgage, home equity lines and loans, consumer, and leases, the credit quality indicator used to determine this component of the Allowance is based on performance status.
The following tables detail the carrying value of loans and leases by portfolio segment based on the credit quality indicators used to determine the Allowance as of September 30, 2014 and December 31, 2013:
Credit Risk Profile by Internally Assigned Grade
(dollars in thousands)		Commercial Mortgage						Construction						Commercial and Industrial						Total
		September 30,			December 31,			September 30,			December 31,			September 30,			December 31,			September 30,			December 31,
		2014			2013			2014			2013			2014			2013			2014			2013
Pass		$	677,136		$	620,227		$	59,660		$	43,812		$	335,153		$	320,211		$	1,071,949		$	984,250
Special Mention			4,789			2,793			—			—			1,405			387			6,194			3,180
Substandard			1,633			2,321			263			2,557			5,966			7,861			7,862			12,739
Total		$	683,558		$	625,341		$	59,923		$	46,369		$	342,524		$	328,459		$	1,086,005		$	1,000,169
Credit Risk Profile by Payment Activity
(dollars in thousands)		Residential Mortgage						Home Equity Lines and Loans						Consumer						Leases						Total
		September 30,			December 31,			September 30,			December 31,			September 30,			December 31,			September 30,			December 31,			September 30,			December 31,
		2014			2013			2014			2013			2014			2013			2014			2013			2014			2013
Performing		$	310,376		$	295,866		$	182,301		$	188,309		$	16,810		$	16,906		$	44,952		$	40,252		$	554,439		$	541,333
Non-performing			3,751			4,377			1,013			1,262			—			20			30			24			4,794			5,683
Total		$	314,127		$	300,243		$	183,314		$	189,571		$	16,810		$	16,926		$	44,982		$	40,276		$	559,233		$	547,016
G. Troubled Debt Restructurings (“TDRs”):
The restructuring of a loan is considered a “troubled debt restructuring” if both of the following conditions are met: (i) the borrower is experiencing financial difficulties, and (ii) the creditor has granted a concession. The most common concessions granted include one or more modifications to the terms of the debt, such as (a) a reduction in the interest rate for the remaining life of the debt, (b) an extension of the maturity date at an interest rate lower than the current market rate for new debt with similar risk, (c) a temporary period of interest-only payments, (d) a reduction in the contractual payment amount for either a short period or remaining term of the loan, and (e) for leases, a reduced lease payment. A less common concession granted is the forgiveness of a portion of the principal.
The determination of whether a borrower is experiencing financial difficulties takes into account not only the current financial condition of the borrower, but also the potential financial condition of the borrower, were a concession not granted. Similarly, the determination of whether a concession has been granted is very subjective in nature. For example, simply extending the term of a loan at its original interest rate or even at a higher interest rate could be interpreted as a concession unless the borrower could readily obtain similar credit terms from a different lender.
The following table presents the balance of TDRs as of the indicated dates:
(dollars in thousands)		September 30,			December 31,
		2014			2013
TDRs included in nonperforming loans and leases		$	1,725		$	1,699
TDRs in compliance with modified terms			6,913			7,277
Total TDRs		$	8,638		$	8,976
The following tables present information regarding loan and lease modifications categorized as TDRs for the three and nine months ended September 30, 2014:
		For the Three Months Ended September 30, 2014
(dollars in thousands)		Number of Contracts			Pre-Modification			Post-Modification
					Outstanding Recorded			Outstanding  Recorded
					Investment			Investment
Residential mortgage			1		$	79		$	79
Total			1		$	79		$	79
		For the Nine Months Ended September 30, 2014
(dollars in thousands)		Number of Contracts			Pre-Modification			Post-Modification
					Outstanding Recorded			Outstanding  Recorded
					Investment			Investment
Residential mortgage			3		$	471		$	473
Home equity lines and loans			1			70			70
Commercial and industrial			1			246			255
Total			5		$	787		$	798
The following tables present information regarding the types of loan and lease modifications made for the three and nine months ended September 30, 2014:
		Number of Contracts for the Three Months Ended September 30, 2014
		Interest			Loan Term			Interest Rate			Interest Rate			Contractual			Forgiveness
		Rate			Extension			Change and			Change			Payment			of Interest
		Change						Term Extension			and/or			Reduction
											Interest-Only			(Leases only)
											Period
Residential mortgage			—			—			1			—			—			—
Total			—			—			1			—			—			—
		Number of Contracts for the Nine Months Ended September 30, 2014
		Interest			Loan Term			Interest Rate			Interest  Rate			Contractual			Forgiveness
		Rate			Extension			Change and			Change			Payment			of Interest
		Change						Term Extension			and/or			Reduction
											Interest-Only			(Leases only)
											Period
Residential mortgage			—			—			3			—			—			—
Home equity lines and loans			—			1			—			—			—			—
Commercial and industrial			—			—			1			—			—			—
Total			—			1			4			—			—			—
During the three and nine months ended September 30, 2014, there were no defaults of loans or leases that had been previously modified to troubled debt restructurings.
H. Impaired Loans
The following tables detail the recorded investment and principal balance of impaired loans by portfolio segment, their related Allowance and interest income recognized as of the dates or for the periods indicated:
(dollars in thousands)		Recorded			Principal			Related			Average			Interest			Cash-Basis
		Investment(2)			Balance			Allowance			Principal			Income			Interest
											Balance			Recognized			Income
																	Recognized
As of or for the three months ended September 30, 2014
Impaired loans with related Allowance:
Home equity lines and loans		$	272		$	360		$	120		$	360		$	—		$	—
Residential mortgage			4,766			4,755			613			4,863			38			—
Commercial and industrial			3,012			3,213			892			3,250			15			—
Consumer			33			33			32			33			—			—
Total		$	8,083		$	8,361		$	1,657		$	8,506		$	53		$	—
Impaired loans without related Allowance(1) (3):
Commercial mortgage		$	646		$	667		$	—		$	713		$	—		$	—
Home equity lines and loans			965			969			—			1,067			2			—
Residential mortgage			4,548			4,873			—			5,253			29			—
Construction			263			1,225			—			1,316			—			—
Commercial and industrial			638			641			—			661			—
Total		$	7,060		$	8,375		$	—		$	9,010		$	31		$	—
Grand total		$	15,143		$	16,736		$	1,657		$	17,516		$	84		$	—
(1)	The table above does not include the recorded investment of $43 thousand of impaired leases without a related Allowance.
-2	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
(3)	This table excludes all purchased credit-impaired loans, which are discussed in Note 4D, above.
(dollars in thousands)		Recorded			Principal			Related			Average			Interest			Cash-Basis
		Investment(2)			Balance			Allowance			Principal			Income			Interest
											Balance			Recognized			Income
																	Recognized
As of or for the nine months ended September 30, 2014
Impaired loans with related Allowance:
Home equity lines and loans		$	272		$	360		$	120		$	359		$	6		$	—
Residential mortgage			4,766			4,755			613			4,774			115			—
Commercial and industrial			3,012			3,213			892			3,276			34			—
Consumer			33			33			32			33			1			—
Total		$	8,083		$	8,361		$	1,657		$	8,442		$	156		$	—
Impaired loans without related Allowance(1) (3):
Commercial mortgage		$	646		$	667		$	—		$	716		$	18		$	—
Home equity lines and loans			965			969			—			1,075			9			—
Residential mortgage			4,548			4,873			—			5,235			103			—
Construction			263			1,225			—			1,495			—			—
Commercial and industrial			638			641			—			670			2			—
Total		$	7,060		$	8,375		$	—		$	9,191		$	132		$	—
Grand total		$	15,143		$	16,736		$	1,657		$	17,633		$	288		$	—
(1)	The table above does not include the recorded investment of $43 thousand of impaired leases without a related Allowance.
-2	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
(3)	This table excludes all purchased credit-impaired loans, which are discussed in Note 4D, above.
(dollars in thousands)		Recorded			Principal			Related			Average			Interest			Cash-Basis
		Investment(2)			Balance			Allowance			Principal			Income			Interest
											Balance			Recognized			Income
																	Recognized
As of or for the three months ended September 30, 2013
Impaired loans with related Allowance:
Home equity lines and loans		$	544		$	589		$	119		$	619		$	5		$	—
Residential mortgage			4,448			4,419			628			4,485			28			—
Commercial and industrial			2,586			2,709			544			2,798			21			—
Consumer			82			82			56			84			1			—
Total		$	7,660		$	7,799		$	1,347		$	7,986		$	55		$	—
Impaired loans without related Allowance(1) (3):
Commercial mortgage		$	421		$	432		$	—		$	471		$	—		$	—
Home equity lines and loans			1,523			1,532			—			1,631			2			—
Residential mortgage			5,091			5,340			—			5,598			39			—
Construction			3,072			4,035			—			3,824			13			—
Commercial and industrial			1,641			1,812			—			1,817			1			—
Total		$	11,748		$	13,151		$	—		$	13,341		$	55		$	—
Grand total		$	19,408		$	20,950		$	1,347		$	21,327		$	110		$	—
(1)	The table above does not include the recorded investment of $62 thousand of impaired leases without a related Allowance.
-2	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
-3	This table excludes all purchased credit-impaired loans, which are discussed in Note 5D, above.
(dollars in thousands)		Recorded			Principal			Related			Average			Interest			Cash-Basis
		Investment(2)			Balance			Allowance			Principal			Income			Interest
											Balance			Recognized			Income
																	Recognized
As of or for the nine months ended September 30, 2013
Impaired loans with related Allowance:
Home equity lines and loans		$	544		$	589		$	119		$	617		$	15		$	—
Residential mortgage			4,448			4,419			628			4,408			83			—
Commercial and industrial			2,586			2,709			544			2,823			53			—
Consumer			82			82			56			86			4			—
Total		$	7,660		$	7,799		$	1,347		$	7,934		$	155		$	—
Impaired loans without related Allowance(1) (3):
Commercial mortgage		$	421		$	432		$	—		$	471		$	—		$	—
Home equity lines and loans			1,523			1,532			—			1,631			2			—
Residential mortgage			5,091			5,340			—			5,598			39			—
Construction			3,072			4,035			—			3,824			13			—
Commercial and industrial			1,641			1,812			—			1,817			1			—
Total		$	11,748		$	13,151		$	—		$	13,341		$	55		$	—
Grand total		$	19,408		$	20,950		$	1,347		$	21,275		$	210		$	—
(1)	The table above does not include the recorded investment of $62 thousand of impaired leases without a related Allowance.
-2	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
-3	This table excludes all purchased credit-impaired loans, which are discussed in Note 5D, above.
(dollars in thousands)		Recorded			Principal			Related
		Investment(2)			Balance			Allowance
As of December 31, 2013
Impaired loans with related allowance:
Home equity lines and loans		$	277		$	279		$	121
Residential mortgage			5,297			5,312			814
Commercial and industrial			2,985			3,100			532
Consumer			52			54			52
Total			8,611			8,745			1,519
Impaired loans(1),(3) without related allowance:
Commercial mortgage			236			237			—
Home equity lines and loans			1,151			1,159			—
Residential mortgage			4,563			4,911			—
Construction			1,172			2,134			—
Commercial and industrial			1,773			1,954			—
Total			8,895			10,395			—
Grand total		$	17,506		$	19,140		$	1,519
(1)	The table above does not include the recorded investment of $63 thousand of impaired leases without a related Allowance.
(2)	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
(3)	This table excludes all purchased credit-impaired loans, which are discussed in Note 4D, above.

Deposits

Deposits	9 Months Ended
	Sep. 30, 2014
Deposits	'
	Note 5 – Deposits
	The following table details the components of deposits:
	(dollars in thousands)	September 30,		December 31,
		2014		2013
	Savings accounts	$	142,364	$	135,240
	Interest-bearing checking accounts		256,890		266,787
	Market-rate accounts		550,238		544,310
	Wholesale non-maturity deposits		41,290		42,936
	Wholesale time deposits		60,171		34,640
	Time deposits		121,158		140,794
	Total interest-bearing deposits		1,172,111		1,164,707
	Non-interest-bearing deposits		438,221		426,640
	Total deposits	$	1,610,332	$	1,591,347

Borrowings

Borrowings	9 Months Ended
	Sep. 30, 2014
Borrowings	'
	Note 6 - Borrowings
	A. Short-term borrowings
	The Corporation’s short-term borrowings (original maturity of one year or less), which consist of a revolving line of credit with a correspondent bank, funds obtained from overnight repurchase agreements with commercial customers, FHLB advances with original maturities of one year or less and overnight fed funds, are detailed below.
	A summary of short-term borrowings is as follows:
	(dollars in thousands)		September 30,			December 31,
			2014			2013
	Overnight fed funds*		$	—		$	—
	Revolving line of credit*			—			—
	Short-term FHLB advances*			—			—
	Repurchase agreements			13,980			10,891
	Total short-term borrowings		$	13,980		$	10,891
	*	Although period-end balance is zero, these borrowing types may contribute to the average balance in the table below.
	The following table sets forth information concerning short-term borrowings:
	(dollars in thousands)		Three Months Ended						Nine Months Ended
			September 30,						September 30,
			2014			2013			2014			2013
	Balance at period-end		$	13,980		$	75,588		$	13,980		$	75,588
	Maximum amount outstanding at any month-end			28,017			75,588			28,017			75,588
	Average balance outstanding during the period			14,074			14,995			14,798			13,455
	Weighted-average interest rate:
	As of period-end			0.1	%		0.33	%		0.1	%		0.33	%
	Paid during the period			0.1	%		0.13	%		0.11	%		0.13	%
	B. Long-term FHLB Advances and Other Borrowings
	The Corporation’s long-term FHLB advances and other borrowings consist of advances from the FHLB with original maturities of greater than one year and an adjustable-rate commercial loan from a correspondent bank.
	The following table presents the remaining periods until maturity of the long-term FHLB advances and other borrowings:
	(dollars in thousands)		September 30,			December 31,
			2014			2013
	Within one year		$	25,932		$	3,917
	Over one year through five years			199,642			196,727
	Over five years through ten years			5,000			5,000
	Total		$	230,574		$	205,644
	The following table presents rate and maturity information on long-term FHLB advances and other borrowings:
	(dollars in thousands)		Maturity Range(1)			Weighted			Coupon Rate						Balance
	Description		From		To	Average			From			To			September 30,		December 31,
						Rate									2014		2013
	Fixed amortizing		4/9/15		4/9/15		3.57	%		3.57	%		3.57	%	$	932	$	2,102
	Adjustable amortizing(2)		N/A		N/A		3.25	%		3.25	%		3.25	%		—		7,050
	Bullet maturity – fixed rate		3/23/15		5/20/20		1.41	%		0.58	%		2.41	%		163,240		140,000
	Bullet maturity – variable rate		6/25/15		11/28/17		0.4	%		0.25	%		0.54	%		45,000		35,000
	Convertible-fixed(3)		1/3/18		8/20/18		2.95	%		2.58	%		3.5	%		21,402		21,492
	Total														$	230,574	$	205,644
	(1)	Maturity range refers to September 30, 2014 balances.
	(2)	Loan from correspondent bank other than FHLB.
	(3)	FHLB advances whereby the FHLB has the option, at predetermined times, to convert the fixed interest rate to an adjustable interest rate indexed to the London Interbank Offered Rate (“LIBOR”). The Corporation has the option to prepay these advances, without penalty, if the FHLB elects to convert the interest rate to an adjustable rate. As of September 30, 2014, substantially all the FHLB advances with this convertible feature are subject to conversion in fiscal 2014. These advances are included in the maturity ranges in which they mature, rather than the period in which they are subject to conversion.
	C. Other Borrowings Information
	As of September 30, 2014 the Corporation had a maximum borrowing capacity with the FHLB of approximately $876.3 million, of which the unused capacity was $631.1 million. In addition, there were unused capacities of $64.0 million in overnight federal funds line, $81.3 million of Federal Reserve Discount Window borrowings and $5.0 million in a revolving line of credit from a correspondent bank as of September 30, 2014. In connection with its FHLB borrowings, the Corporation is required to hold the capital stock of the FHLB. The amount of FHLB capital stock held was $12.9 million at September 30, 2014, and $11.7 million at December 31, 2013. The carrying amount of the FHLB capital stock approximates its redemption value.

Derivatives_and_Hedging_Activi

Derivatives and Hedging Activities

9 Months Ended

Sep. 30, 2014

Derivatives and Hedging Activities

'

Note 7 - Derivatives and Hedging Activities

In December, 2012, the Corporation entered into a forward-starting interest rate swap to hedge the cash flows of a $15 million floating-rate FHLB borrowing. The interest rate swap involves the exchange of the Corporation’s floating rate interest payments on the underlying principal amount. This swap was designated, and qualified, for cash-flow hedge accounting. The term of the swap begins November 30, 2015 and ends November 28, 2022. For derivative instruments that are designated and qualify as hedging instruments, the effective portion of gains or losses is reported as a component of other comprehensive income, and is subsequently reclassified into earnings as an adjustment to interest expense in the periods in which the hedged forecasted transaction affects earnings.

The following table details the Corporation’s derivative positions as of the balance sheet dates indicated:

As of September 30, 2014:

(dollars in thousands)

Current

Fair Value  of

Projected

Asset

Notional

Trade Date

Effective

Maturity

Receive (Variable)

Receive  Rate

Pay Fixed

(Liability)

Amount

Date

Date

Index

Swap Rate

$

15,000

12/13/12

11/30/15

11/28/22

US 3-Month LIBOR

2.773

%

2.376

%

$

408

As of December 31, 2013:

(dollars in thousands)

Current

Fair Value  of

Projected

Asset

Notional

Trade Date

Effective

Maturity

Receive (Variable)

Receive  Rate

Pay Fixed

(Liability)

Amount

Date

Date

Index

Swap Rate

$

15,000

12/13/12

11/30/15

11/28/22

US 3-Month LIBOR

3.597

%

2.376

%

$

1,142

For each of the three and nine month periods ended September 30, 2014 and 2013, there were no reclassifications of the interest-rate swap’s fair value from other comprehensive income to earnings.

StockBased_Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2014
Stock-Based Compensation	'
	Note 8 – Stock-Based Compensation
	A. General Information
	The Corporation permits the issuance of stock options, dividend equivalents, performance awards, stock appreciation rights, restricted stock and/or restricted stock units to employees and directors of the Corporation under several plans. The terms and conditions of awards under the plans are determined by the Corporation’s Compensation Committee.
	Prior to April 25, 2007, all shares authorized for grant as stock-based compensation were limited to grants of stock options. On April 25, 2007, the shareholders approved the Corporation’s “2007 Long-Term Incentive Plan” (the “2007 LTIP”) under which a total of 428,996 shares of the Corporation’s common stock were made available for award grants. On April 28, 2010, the shareholders approved the Corporation’s “2010 Long Term Incentive Plan” (“2010 LTIP”) under which a total of 445,002 shares of the Corporation’s common stock were made available for award grants.
	The equity awards granted under the 2007 and 2010 LTIPs were authorized to be in the form of, among others, options to purchase the Corporation’s common stock, restricted stock awards or units (“RSA”s or “RSU”s) and performance stock awards or units (“PSA”s or “PSU”s).
	RSAs and RSUs have a restriction based on the passage of time and may also have restrictions based on non-market-related performance criteria. The fair value of the RSAs and RSUs is based on the closing price on the day preceding the date of the grant.
	The PSAs and PSUs have a restriction based on the passage of time, but also have a restriction based on performance criteria related to the Corporation’s total shareholder return relative to the performance of the community bank index for the respective period. The amount of PSAs or PSUs earned will not exceed 100% of the PSAs or PSUs awarded. The fair value of the PSAs and PSUs is calculated using the Monte Carlo Simulation method.
	B. Stock Options
	Stock-based compensation cost is measured at the grant date, based on the fair value of the award and is recognized as an expense over the vesting period. The fair value of stock option grants is determined using the Black-Scholes pricing model. The assumptions necessary for the calculation of the fair value are expected life of options, annual volatility of stock price, risk-free interest rate and annual dividend yield.
	The following table provides information about options outstanding for the three months ended September 30, 2014:
		Shares			Weighted		Weighted
					Average		Average Grant
					Exercise Price		Date Fair
							Value
	Options outstanding, June 30, 2014		521,886		$	20.84	$	4.73
	Granted		—		$	—	$	—
	Forfeited		—		$	—	$	—
	Expired		(750	)	$	21.21	$	4.86
	Exercised		(33,460	)	$	20.41	$	4.57
	Options outstanding, September 30, 2014		487,676		$	20.87	$	4.74
	The following table provides information about options outstanding for the nine months ended September 30, 2014:
		Shares			Weighted		Weighted
					Average		Average Grant
					Exercise Price		Date Fair
							Value
	Options outstanding, December 31, 2013		591,086		$	20.73	$	4.7
	Granted		—		$	—	$	—
	Forfeited		—		$	—	$	—
	Expired		(750	)	$	21.21	$	4.86
	Exercised		(102,660	)	$	20.07	$	4.48
	Options outstanding, September 30, 2014		487,676		$	20.87	$	4.74
	The following table provides information about unvested options for the three months ended September 30, 2014:
		Shares			Weighted		Weighted
					Average		Average Grant
					Exercise Price		Date Fair
							Value
	Unvested options, June 30, 2014		30,146		$	18.27	$	4.42
	Granted		—		$	—	$	—
	Vested		(30,146	)	$	18.27	$	4.42
	Forfeited		—		$	—	$	—
	Unvested options, September 30, 2014		—		$	—	$	—
	The following table provides information about unvested options for the nine months ended September 30, 2014:
		Shares			Weighted		Weighted
					Average		Average Grant
					Exercise Price		Date Fair
							Value
	Unvested options, December 31, 2013		30,146		$	18.27	$	4.42
	Granted		—		$	—	$	—
	Vested		(30,146	)	$	18.27	$	4.42
	Forfeited		—		$	—	$	—
	Unvested options, September 30, 2014		—		$	—	$	—
	For the three and nine months ended September 30, 2014, the Corporation recognized $14 thousand and $64 thousand, respectively, of expense related to stock options. As of September 30, 2014, there was no unrecognized expense related to stock options.
	Proceeds, related tax benefits realized from options exercised and intrinsic value of options exercised during the three and nine months ended September 30, 2014 and 2013 are detailed below:
		Three Months Ended September 30,					Nine Months Ended September 30,
	(dollars in thousands)	2014			2013		2014			2013
	Proceeds from exercise of stock options	$	683		$	810	$	2,061		$	2,550
	Related tax benefit recognized		82			75		256			231
	Net proceeds of options exercised	$	765		$	885	$	2,317		$	2,781
	Intrinsic value of options exercised	$	309		$	215	$	886		$	661
	The following table provides information about options outstanding and exercisable at September 30, 2014:
	(dollars in thousands, except exercise price)	Outstanding			Exercisable
	Number of shares		487,676			487,676
	Weighted average exercise price	$	20.87		$	20.87
Aggregate intrinsic value	$	3,636		$	3,636
Weighted average contractual term in years		2.8			2.8
C. Restricted Stock Awards and Performance Stock Awards
The Corporation has granted RSAs, RSUs, PSAs and PSUs under the 2007 LTIP and 2010 LTIP.
RSAs and RSUs
The compensation expense for the RSAs and RSUs is measured based on the market price of the stock on the day prior to the grant date and is recognized on a straight line basis over the vesting period.
For the three and nine months ended September 30, 2014, the Corporation recognized $72 thousand and $234 thousand, respectively of expense related to the Corporation’s RSAs and RSUs. As of September 30, 2014, there was $661 thousand of unrecognized compensation cost related to RSAs and RSUs. This cost will be recognized over a weighted average period of 2.1 years.
The following table details the unvested RSAs and RSUs for the three and nine months ended September 30, 2014:
	Three Months Ended					Nine Months Ended
	September 30, 2014					September 30, 2014
	Number of			Weighted		Number of			Weighted
	Shares			Average		Shares			Average  Grant
				Grant Date					Date Fair Value
				Fair Value
Beginning balance		35,365		$	19.85		54,156		$	19.36
Granted		16,456			28.88		16,456			28.88
Vested		(2,980	)		16.78		(21,771	)		18.21
Forfeited		(2,560	)		21.48		(2,560	)		21.48
Ending balance		46,281		$	23.17		46,281		$	23.17
For the three and nine months ended September 30, 2014, the Corporation recorded a tax benefit of $13 thousand and $79 thousand related to the vesting of RSAs and RSUs.
PSAs and PSUs
The compensation expense for PSAs and PSUs is measured based on the grant date fair value as calculated using the Monte Carlo Simulation method.
For the three and nine months ended September 30, 2014, the Corporation recognized $216 thousand and $613 thousand of expense related to the PSAs and PSUs. As of September 30, 2014, there was $1.9 million of unrecognized compensation cost related to PSAs. This cost will be recognized over a weighted average period of 2.3 years.
For the three and nine months ended September 30, 2014, the Corporation recorded a tax benefit of $385 thousand and $385 thousand related to the vesting of PSAs and PSUs.
The following table details the unvested PSAs and PSUs for the three and nine months ended September 30, 2014:
	Three Months Ended					Nine Months Ended
	September 30, 2014					September 30, 2014
	Number of			Weighted		Number of			Weighted
	Shares			Average		Shares			Average Grant
				Grant Date					Date Fair Value
				Fair Value
Beginning balance		203,980		$	11.9		204,980		$	11.9
Granted		71,184			15.05		71,184			15.05
Vested		(56,946	)		10.07		(56,946	)		10.07
Forfeited		(900	)		12.59		(1,900	)		12.32
Ending balance		217,318		$	13.41		217,318		$	13.41

Pension_and_Other_PostRetireme

Pension and Other Post-Retirement Benefit Plans	9 Months Ended
	Sep. 30, 2014
Pension and Other Post-Retirement Benefit Plans	'
	Note 9 - Pension and Other Post-Retirement Benefit Plans
	The Corporation has three defined benefit pension plans: the qualified defined-benefit plan (the “QDBP”) which covers all employees over age 20 1/2 who meet certain service requirements, and two non-qualified defined-benefit pension plans (“SERP I” and “SERP II”) which are restricted to certain senior officers of the Corporation.
	SERP I provides each participant with the equivalent pension benefit provided by the QDBP on any compensation and bonus deferrals that exceed the IRS limit applicable to the QDBP.
	On February 12, 2008, the Corporation amended the QDBP and SERP I to freeze further increases in the defined-benefit amounts to all participants, effective March 31, 2008.
	On April 1, 2008, the Corporation added SERP II, a non-qualified defined-benefit plan which was restricted to certain senior officers of the Corporation. Effective January 1, 2013, the Corporation curtailed SERP II, as further increases to the defined-benefit amounts to over 20% of the participants have been frozen. As a result of the curtailment, for the three and nine months ended September 30, 2013, the Corporation recorded a gain of $0 and $690 thousand, respectively, which represented the reversal of previous amounts that had been expensed in anticipation of future service of the curtailed participants.
	The Corporation also has a postretirement benefit plan (“PRBP”) that covers certain retired employees and a group of current employees. The PRBP was closed to new participants in 1994. In 2007, the Corporation amended the PRBP to allow for settlement of obligations to certain current and retired employees. Certain retired participant obligations were settled in 2007 and current employee obligations were settled in 2008.
	The following tables provide details of the components of the net periodic benefits cost (benefit) for the three and nine months ended September 30, 2014 and 2013:
		Three Months Ended September 30,
		SERP I and SERP II					QDBP						PRBP
	(dollars in thousands)	2014		2013			2014			2013			2014		2013
	Service cost	$	19	$	18		$	—		$	—		$	—	$	—
	Interest cost		46		40			411			371			8		8
	Expected return on plan assets		—		—			(837	)		(745	)		—		—
	Amortization of transition obligation		—		—			—			—			—		—
	Amortization of prior service costs		3		3			—			—			—		—
	Amortization of net loss		10		13			97			431			14		19
	Gain on curtailment		—		—			—			—			—		—
	Net periodic benefit cost	$	78	$	74		$	(329	)	$	57		$	22	$	27
		Nine Months Ended September 30,
		SERP I and SERP II					QDBP						PRBP
	(dollars in thousands)	2014		2013			2014			2013			2014		2013
	Service cost	$	55	$	54		$	—		$	—		$	—	$	—
	Interest cost		137		119			1,231			1,114			22		22
	Expected return on plan assets		—		—			(2,511	)		(2,236	)		—		—
	Amortization of transition obligation		—		—			—			—			—		—
	Amortization of prior service costs		10		10			—			—			—		—
	Amortization of net loss		32		39			293			1,293			44		58
	Gain on curtailment		—		(690	)		—			—			—		—
	Net periodic benefit cost	$	234	$	(468	)	$	(987	)	$	171		$	66	$	80
	QDBP: No contributions to the QDBP were made for the three and nine months ended September 30, 2014.
	SERP I and SERP II: The Corporation contributed $37 thousand and $11 thousand during the three and nine months ended September 30, 2014, respectively, and is expected to contribute an additional $37 thousand to the SERP I and SERP II plans for the remaining six months of 2014.
	PRBP: In 2005, the Corporation capped the maximum annual payment under the PRBP at 120% of the 2005 benefit. This maximum was reached in 2008 and the cap is not expected to be increased above this level.

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2014
Segment Information	'
	Note 10 - Segment Information
	The Corporation aggregates certain of its operations and has identified two segments as follows: Banking and Wealth Management.
	The following tables detail segment information for the three and nine months ended September 30, 2014 and 2013:
			Three Months Ended September 30, 2014									Three Months Ended September 30, 2013
	(dollars in thousands)		Banking			Wealth Management			Consolidated			Banking			Wealth Management			Consolidated
	Net interest income		$	19,175		$	1		$	19,176		$	18,532		$	1		$	18,533
	Less: loan loss provision			550			—			550			959			—			959
	Net interest income after loan loss provision			18,625			1			18,626			17,573			1			17,574
	Other income:
	Fees for wealth management services			—			9,099			9,099			—			8,635			8,635
	Service charges on deposit accounts			663			—			663			627			—			627
	Loan servicing and other fees			431			—			431			481			—			481
	Net gain on sale of loans			440			—			440			578			—			578
	Net gain on sale of available for sale securities			—			—			—			—			—			—
	Net loss on sale of other real estate owned			(49	)		—			(49	)		(1	)		—			(1	)
	BOLI income			76			—			76			72			—			72
	Other operating income			873			10			883			947			48			995
	Total other income			2,434			9,109			11,543			2,704			8,683			11,387
	Other expenses:
	Salaries & wages			6,179			2,931			9,110			5,986			3,026			9,012
	Employee benefits			945			707			1,652			1,196			700			1,896
	Occupancy & equipment			1,507			374			1,881			1,267			379			1,646
	Amortization of intangible assets			68			565			633			78			580			658
	Professional fees			694			7			701			609			27			636
	Other operating expenses			5,160			824			5,984			4,812			663			5,475
	Total other expenses			14,553			5,408			19,961			13,948			5,375			19,323
	Segment profit			6,506			3,702			10,208			6,329			3,309			9,638
	Intersegment (revenues) expenses*			(93	)		93			—			(19	)		19			—
	Pre-tax segment profit after eliminations		$	6,413		$	3,795		$	10,208		$	6,310		$	3,328		$	9,638
	% of segment pre-tax profit after eliminations			62.8	%		37.2	%		100	%		65.5	%		34.5	%		100	%
	Segment assets (dollars in millions)		$	2,084		$	40		$	2,124		$	2,017		$	42		$	2,059
	*	Inter-segment revenues consist of rental payments, interest on deposits and management fees.
			Nine Months Ended September 30, 2014									Nine Months Ended September 30, 2013
	(dollars in thousands)		Banking			Wealth Management			Consolidated			Banking			Wealth Management			Consolidated
	Net interest income		$	57,339		$	2		$	57,341		$	53,863		$	2		$	53,865
	Less: loan loss provision			1,200			—			1,200			2,763			—			2,763
	Net interest income after loan loss provision			56,139			2			56,141			51,100			2			51,102
	Other income:
	Fees for wealth management services			—			27,511			27,511			—			26,078			26,078
	Service charges on deposit accounts			1,920			—			1,920			1,807			—			1,807
	Loan servicing and other fees			1,305			—			1,305			1,380			—			1,380
	Net gain on sale of loans			1,301			—			1,301			3,588			—			3,588
	Net gain on sale of available for sale securities			81			—			81			2			—			2
	Net loss on sale of other real estate owned			171			—			171			(194	)		—			(194	)
	BOLI income			231			—			231			270			—			270
	Other operating income			2,838			81			2,919			3,051			138			3,189
	Total other income			7,847			27,592			35,439			9,904			26,216			36,120
	Other expenses:
	Salaries & wages			18,185			9,059			27,244			17,898			9,010			26,908
	Employee benefits			3,213			2,227			5,440			4,235			2,198			6,433
	Occupancy & equipment			4,389			1,108			5,497			3,994			1,130			5,124
	Amortization of intangible assets			210			1,696			1,906			237			1,741			1,978
	Professional fees			2,144			64			2,208			1,732			143			1,875
	Other operating expenses			14,696			2,495			17,191			15,082			2,682			17,764
	Total other expenses			42,837			16,649			59,486			43,178			16,904			60,082
	Segment profit			21,149			10,945			32,094			17,826			9,314			27,140
	Intersegment (revenues) expenses*			(279	)		279			—			(323	)		323			—
	Pre-tax segment profit after eliminations		$	20,870		$	11,224		$	32,094		$	17,503		$	9,637		$	27,140
	% of segment pre-tax profit after eliminations			65	%		35	%		100	%		64.5	%		35.5	%		100	%
	Segment assets (dollars in millions)		$	2,084		$	40		$	2,124		$	2,017		$	42		$	2,059
	*	Inter-segment revenues consist of rental payments, interest on deposits and management fees.
	Other segment information is as follows:
	Wealth Management Segment Information
		(dollars in millions)
		September 30,			December 31, 2013
		2014
Assets under management, administration, supervision and brokerage:		$	7,580.80		$	7,268.30

Mortgage_Servicing_Rights

Mortgage Servicing Rights	9 Months Ended
	Sep. 30, 2014
Mortgage Servicing Rights	'
	Note 11 - Mortgage Servicing Rights
	The following tables summarize the Corporation’s activity related to mortgage servicing rights (“MSRs”) for the three and nine months ended September 30, 2014 and 2013:
			Three Months Ended September 30,
	(dollars in thousands)		2014			2013
	Balance, beginning of period		$	4,760		$	4,790
	Additions			161			174
	Amortization			(128	)		(187	)
	Recovery			3			—
	Impairment			—			(33	)
	Balance, end of period		$	4,796		$	4,744
	Fair value		$	5,719		$	5,622
	Residential mortgage loans serviced for others, end of period		$	594,156		$	616,636
			Nine Months Ended September 30,
	(dollars in thousands)		2014			2013
	Balance, beginning of period		$	4,750		$	4,491
	Additions			403			883
	Amortization			(371	)		(617	)
	Recovery			14			91
	Impairment			—			(104	)
	Balance, end of period		$	4,796		$	4,744
	Fair value		$	5,719		$	5,622
	Residential mortgage loans serviced for others, end of period		$	594,156		$	616,636
	As of September 30, 2014 and December 31, 2013, key economic assumptions and the sensitivity of the current fair value of MSRs to immediate 10 and 20 percent adverse changes in those assumptions are as follows:
	(dollars in thousands)		September 30, 2014			December 31, 2013
	Fair value amount of MSRs		$	5,719		$	5,733
	Weighted average life (in years)			6.45			6.3
	Prepayment speeds (constant prepayment rate)*			9.9			11.1
	Impact on fair value:
	10% adverse change		$	(175	)	$	(206	)
	20% adverse change		$	(345	)	$	(402	)
	Discount rate			10.5	%		10.5	%
	Impact on fair value:
	10% adverse change		$	(228	)	$	(231	)
	20% adverse change		$	(439	)	$	(445	)
	*	Represents the weighted average prepayment rate for the life of the MSR asset.
	These assumptions and sensitivities are hypothetical and should be used with caution. Changes in fair value based on a 10% variation in assumptions generally cannot be extrapolated because the relationship of the change in assumptions to the change in fair value may not be linear. Also, the effect of a variation in a particular assumption on the fair value of the MSRs is calculated without changing any other assumption. In reality, changes in one factor may result in changes in another, which could magnify or counteract the sensitivities.

Goodwill_and_Other_Intangibles

Goodwill and Other Intangibles	9 Months Ended
	Sep. 30, 2014
Goodwill and Other Intangibles	'
	Note 12 - Goodwill and Other Intangibles
	The Corporation’s goodwill and intangible assets related to the acquisitions of Lau Associates LLC (“Lau”) in July, 2008, First Keystone Financial, Inc. (“FKF”) in July, 2010, the Private Wealth Management Group of the Hershey Trust Company (“PWMG”) in May, 2011, and Davidson Trust Company (“DTC”) in May, 2012, and the First Bank of Delaware (“FBD”) transaction in November, 2012 are detailed below:
	(dollars in thousands)	Balance		Additions/		Amortization			Balance		Amortization
		December 31,		Adjustments					September  30,		Period
		2013							2014
	Goodwill – Wealth segment	$	20,412	$	—	$	—		$	20,412	Indefinite
	Goodwill – Banking segment		12,431		—		—			12,431	Indefinite
	Total	$	32,843	$	—	$	—		$	32,843
	Core deposit intangible	$	1,342	$	—	$	(210	)	$	1,132	10 Years
	Customer relationships		13,595		—		(926	)		12,669	10 to 20 Years
	Non-compete agreements		3,218		—		(770	)		2,448	5 to 5 1/2 Years
	Trade name		1,210		—		—			1,210	Indefinite
	Total	$	19,365	$	—	$	(1,906	)	$	17,459
	Grand total	$	52,208	$	—	$	(1,906	)	$	50,302
	The Corporation performed its annual review of goodwill and identifiable intangible assets as of December 31, 2013 in accordance with ASC 350, “Intangibles Goodwill and Other.” For the three and nine months ended September 30, 2014, the Corporation determined there were no events that would necessitate impairment testing of goodwill and other intangible assets.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2014
Accumulated Other Comprehensive Loss	'
	Note 13 – Accumulated Other Comprehensive Loss
	The following tables detail the components of accumulated other comprehensive (loss) income for the three and nine month periods ended September 30, 2014 and 2013:
	(dollars in thousands)		Net Change in			Net Change in			Net Change in			Accumulated
			Unrealized Gains			Fair Value of			Unfunded			Other
			on Available-for-			Derivative			Pension			Comprehensive
			Sale  Investment			Used for Cash			Liability			Loss
			Securities			Flow  Hedge
	Balance, June 30, 2014		$	1,536			274			(5,358	)		(3,548	)
	Net change			(421	)		(8	)		46			(383	)
	Balance, September 30, 2014		$	1,115			266			(5,312	)		(3,931	)
	Balance, June 30, 2013		$	(123	)	$	577		$	(11,559	)	$	(11,105	)
	Net change			50			—			246			296
	Balance, September 30, 2013		$	(73	)	$	577		$	(11,313	)	$	(10,809	)
	(dollars in thousands)		Net Change in			Net Change in			Net Change in			Accumulated
			Unrealized Gains			Fair Value of			Unfunded			Other
			on Available-for-			Derivative			Pension			Comprehensive
			Sale Investment			Used for Cash			Liability			Loss
			Securities			Flow Hedge
	Balance, December 31, 2013		$	(857	)	$	743		$	(5,451	)	$	(5,565	)
	Net change			1,972			(477	)		139			1,634
	Balance, September 30, 2014		$	1,115			266			(5,312	)		(3,931	)
	Balance, December 31, 2012		$	3,164		$	(24	)	$	(13,218	)	$	(10,078	)
	Net change			(3,237	)		601			1,905			(731	)
	Balance, September 30, 2013		$	(73	)	$	577		$	(11,313	)	$	(10,809	)
	The following tables detail the amounts reclassified from each component of accumulated other comprehensive loss to each component’s applicable income statement line, for the three and nine month periods ended September 30, 2014 and 2013:
	Description of Accumulated Other Comprehensive		Amount Reclassified from Accumulated						Affected Income Statement Category
	Loss Component		Other Comprehensive Loss
			For The Three Months Ended
			September 30,
			2014			2013
	Net unrealized gain on investment securities available for sale:
	Realization of gain on sale of investment securities available for sale		$	—		$	—		Net gain on sale of available for sale investment securities
				—			—		Less: income tax expense
			$	—		$	—		Net of income tax
	Unfunded pension liability:
	Amortization of net loss included in net periodic pension costs*		$	121		$	463		Employee benefits
	Amortization of prior service cost included in net periodic pension costs*			3			3		Employee benefits
	Amortization of transition obligation included in net periodic pension costs*			—			—		Employee benefits
	Gain on curtailment of SERP II			—			—		Net gain on curtailment of nonqualified pension plan
				124			466		Total expense before income tax benefit
				43			163		Less: income tax benefit
			$	81		$	303		Net of income tax
	Description of Accumulated Other Comprehensive		Amount Reclassified from Accumulated						Affected Income Statement Category
	Loss Component		Other Comprehensive Loss
			For The Nine Months Ended
			September 30,
			2014			2013
	Net unrealized gain on investment securities available for sale:
	Realization of gain on sale of investment securities available for sale		$	(81	)	$	(2	)	Net gain on sale of available for sale investment securities
				(28	)		(1	)	Less: income tax expense
			$	(53	)	$	(1	)	Net of income tax
	Unfunded pension liability:
	Amortization of net loss included in net periodic pension costs*		$	369		$	1,390		Employee benefits
	Amortization of prior service cost included in net periodic pension costs*			10			10		Employee benefits
	Amortization of transition obligation included in net periodic pension costs*			—			—		Employee benefits
	Gain on curtailment of SERP II			—			(690	)	Net gain on curtailment of nonqualified pension plan
				379			710		Total expense before income tax benefit
				133			249		Less: income tax benefit
			$	246		$	461		Net of income tax
	*	Accumulated other comprehensive loss components are included in the computation of net periodic pension cost. See Note 9 - Pension and Other Post-Retirement Benefit Plans

Shareholders_Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2014
Shareholders' Equity	'
	Note 14 - Shareholders’ Equity
	Dividend
	On October 23, 2014, the Corporation’s Board of Directors declared a regular quarterly dividend of $0.19 per share payable December 1, 2014 to shareholders of record as of November 4, 2014. During the third quarter of 2014, the Corporation paid a regular quarterly dividend of $0.19 per share. This dividend totaled $2.6 million, based on outstanding shares and restricted stock units as of August 5, 2014 of 13,810,468. During the second quarter of 2014, the Corporation paid a regular quarterly dividend of $0.18 per share. This dividend totaled $2.5 million, based on outstanding shares and restricted stock units as of May 13, 2014 of 13,780,630. During the first quarter of 2014, the Corporation paid a regular quarterly dividend of $0.18 per share. This payment totaled $2.5 million, based on outstanding shares and restricted stock units as of February 10, 2014 of 13,731,337.
	S-3 Shelf Registration Statement and Offerings Thereunder
	In April 2012, the Corporation filed a shelf registration statement on Form S-3 (the “Shelf Registration Statement”) to replace its 2009 Shelf Registration Statement, which was set to expire in June 2012. The Shelf Registration Statement allows the Corporation to raise additional capital through offers and sales of registered securities consisting of common stock, debt securities, warrants to purchase common stock, stock purchase contracts and units or units consisting of any combination of the foregoing securities. Using the prospectus in the Shelf Registration Statement, together with applicable prospectus supplements, the Corporation may sell, from time to time, in one or more offerings, such securities in a dollar amount up to $150,000,000, in the aggregate.
	In addition, the Corporation has in place under its Shelf Registration Statement a Dividend Reinvestment and Stock Purchase Plan (the “Plan”), which allows it to issue up to 1,500,000 shares of registered common stock. The Plan allows for the grant of a request for waiver (“RFW”) above the Plan’s maximum investment of $120 thousand per account per year. An RFW is granted based on a variety of factors, including the Corporation’s current and projected capital needs, prevailing market prices of the Corporation’s common stock and general economic and market conditions.
	The Plan is intended to allow both existing shareholders and new investors to easily and conveniently increase their investment in the Corporation without incurring many of the fees and commissions normally associated with brokerage transactions. For the nine months ended September 30, 2014, the Corporation issued 1,602 shares and raised $44 thousand through the Plan. No RFWs were approved during the nine months ended September 30, 2014. No other sales of securities were executed under the Shelf Registration Statement during the nine months ended September 30, 2014.
	Options
	In addition to shares issued through the Plan, the Corporation also issues shares through the exercise of stock options. During the nine months ended September 30, 2014, 102,660 shares were issued pursuant to the exercise of stock options, increasing shareholders’ equity by $2.1 million.

Accounting_for_Uncertainty_in_

Accounting for Uncertainty in Income Taxes	9 Months Ended
	Sep. 30, 2014
Accounting for Uncertainty in Income Taxes	'
	Note 15 - Accounting for Uncertainty in Income Taxes
	The Corporation recognizes the financial statement benefit of a tax position only after determining that the Corporation would be more likely than not to sustain the position following an examination. For tax positions meeting the more-likely-than-not threshold, the amount recognized in the financial statements is the largest benefit that has a greater than 50% likelihood of being realized upon settlement with the relevant tax authority.
	The Corporation is subject to income taxes in the United States federal jurisdiction and multiple state jurisdictions. The Corporation is no longer subject to U.S. federal income tax examination by taxing authorities for years before 2011.
	The Corporation’s policy is to record interest and penalties on uncertain tax positions as income tax expense. No interest or penalties were accrued for the three or nine month periods ended September 30, 2014 or 2013.

Fair_Value_Measurement

Fair Value Measurement	9 Months Ended
	Sep. 30, 2014
Fair Value Measurement	'
	Note 16 - Fair Value Measurement
	The following disclosures are made in conjunction with the application of fair value measurements.
	FASB ASC 820 “Fair Value Measurement” establishes a fair value hierarchy based on the nature of data inputs for fair value determinations, under which the Corporation is required to value each asset using assumptions that market participants would utilize to value that asset. When the Corporation uses its own assumptions, it is required to disclose additional information about the assumptions used and the effect of the measurement on earnings or the net change in assets for the period.
	The Corporation’s investment securities available for sale, which generally include state and municipal securities, U.S. government agency securities and mortgage-related securities, are reported at fair value. These securities are valued by an independent third party. The third party’s evaluations are based on market data. They utilize evaluated pricing models that vary by asset and incorporate available trade, bid and other market information. For securities that do not trade on a daily basis, their pricing applications apply available information such as benchmarking and matrix pricing. The market inputs normally sought in the evaluation of securities include benchmark yields, reported trades, broker/dealer quotes (only obtained from market makers or broker/dealers recognized as market participants), issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data. For certain securities, additional inputs may be used or some market inputs may not be applicable. Inputs are prioritized differently on any given day based on market conditions.
	U.S. Government agency securities are evaluated and priced using multi-dimensional relational models and option-adjusted spreads. State and municipal securities are evaluated on a series of matrices including reported trades and material event notices. Mortgage-related securities are evaluated using matrix correlation to treasury or floating index benchmarks, prepayment speeds, monthly payment information and other benchmarks. Other available for sale investments are evaluated using a broker-quote based application, including quotes from issuers. The Corporation has a sufficient understanding of the third party service’s valuation models, assumptions and inputs used in determining the fair value of available for sale investments to enable management to maintain an appropriate system of internal control.
	The value of the investment portfolio is determined using three broad levels of inputs:
	Level 1 – Quoted prices in active markets for identical securities.
	Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active and model-derived valuations whose inputs are observable or whose significant value drivers are observable.
	Level 3 – Instruments whose significant value drivers are unobservable.
	These levels are not necessarily an indication of the risks or liquidity associated with these investments. The following tables summarize the assets at September 30, 2014 and December 31, 2013 that are recognized on the Corporation’s balance sheet using fair value measurement determined based on the differing levels of input.
	The following table sets forth the fair value of assets measured on a recurring and non-recurring basis as of September 30, 2014:
	(dollars in millions)	Total		Level 1		Level 2		Level 3
	Assets Measured at Fair Value on a Recurring Basis:
	Investment securities (available for sale and trading):
	U.S. Treasury securities	$	0.1	$	0.1	$	—	$	—
	Obligations of the U.S. government agency securities		71.1		—		71.1		—
	Obligations of state & political subdivisions		33.7		—		33.7		—
	Mortgage-backed securities		106.2		—		106.2		—
	Collateralized mortgage obligations		37.1		—		37.1		—
	Mutual funds		15.8		15.8		—		—
	Other debt securities		1.9		—		1.9		—
	Derivatives		0.4		—		0.4		—
	Total assets measured on a recurring basis at fair value	$	266.3	$	15.9	$	250.4	$	—
	Assets Measured at Fair Value on a Non-Recurring Basis
	Mortgage servicing rights	$	5.7	$	—	$	—	$	5.7
	Impaired loans and leases		13.5		—		—		13.5
	Other real estate owned (“OREO”)		0.9		—		—		0.9
	Total assets measured on a non-recurring basis at fair value	$	20.1	$	—	$	—	$	20.1
	The following table sets forth the fair value of assets measured on a recurring and non-recurring basis as of December 31, 2013:
	(dollars in millions)	Total		Level 1		Level 2		Level 3
	Assets Measured at Fair Value on a Recurring Basis:
	Investment securities (available for sale and trading):
	U.S. Treasury securities	$	0.1	$	0.1	$	—	$	—
	Obligations of the U.S. government agency securities		69.5		—		69.5		—
	Obligations of state & political subdivisions		37		—		37		—
	Mortgage-backed securities		119.4		—		119.4		—
	Collateralized mortgage obligations		44.2		—		44.2		—
	Mutual funds		17.1		17.1		—		—
	Other debt securities		1.9		—		1.9		—
	Derivatives		1.1		—		1.1		—
	Total assets measured on a recurring basis at fair value	$	290.3	$	17.2	$	273.1	$	—
	Assets Measured at Fair Value on a Non-Recurring Basis
	Mortgage servicing rights	$	4.9	$	—	$	—	$	4.9
	Impaired loans and leases		16.1		—		—		16.1
	OREO		0.9		—		—		0.9
	Total assets measured on a non-recurring basis at fair value	$	21.9	$	—	$	—	$	21.9
	During the three and nine months ended September 30, 2014 a net decrease of $102 thousand and a net increase of $138 thousand, respectively, were recorded in the Allowance as a result of adjusting the carrying value and estimated fair value of the impaired loans in the above tables. As it relates to the fair values of assets measured on a recurring basis, there have been no transfers between levels during the nine months ended September 30, 2014.
	Impaired Loans
	The Corporation evaluates and values impaired loans at the time the loan is identified as impaired, and the fair values of such loans are estimated using Level 3 inputs in the fair value hierarchy. Each loan’s collateral has a unique appraisal and management’s discount of the value is based on the factors unique to each impaired loan. The significant unobservable input in determining the fair value is management’s subjective discount on appraisals of the collateral securing the loan, which range from 10% - 50%. Collateral may consist of real estate and/or business assets including equipment, inventory and/or accounts receivable and the value of these assets is determined based on the appraisals by qualified licensed appraisers hired by the Corporation. Appraised and reported values may be discounted based on management’s historical knowledge, changes in market conditions from the time of valuation, estimated costs to sell, and/or management’s expertise and knowledge of the client and the client’s business.
	The Corporation has an appraisal policy in which an appraisal is obtained for a commercial loan at the point at which the loan either becomes nonperforming or is downgraded to a substandard or worse classification. For consumer loans, the Corporation obtains updated appraisals when a loan becomes 90 days past due or when it receives other information that may indicate possible impairment. Based on the appraisals obtained by the Corporation, an appropriate Allowance is allocated to the particular loan.
	Other Real Estate Owned
	Other real estate owned consists of properties acquired as a result of foreclosures and deeds in-lieu-of foreclosure. Properties are classified as OREO and are reported at the lower of cost or fair value less cost to sell, and are classified as Level 3 in the fair value hierarchy.
	Mortgage Servicing Rights
	MSRs do not trade in an active, open market with readily observable prices. Accordingly, the Corporation obtains the fair value of the MSRs using a third-party pricing provider. The provider determines the fair value by discounting projected net servicing cash flows of the remaining servicing portfolio. The valuation model used by the provider considers market loan prepayment predictions and other economic factors which the Corporation considers to be significant unobservable inputs. The fair value of MSRs is mostly affected by changes in mortgage interest rates since rate changes cause the loan prepayment acceleration factors to increase or decrease. All assumptions are market driven. The Corporation has a sufficient understanding of the third party service’s valuation models, assumptions and inputs used in determining the fair value of MSRs to enable management to maintain an appropriate system of internal control. Mortgage servicing rights are classified within Level 3 of the fair value hierarchy as the valuation is model driven and primarily based on unobservable inputs.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2014
Fair Value of Financial Instruments	'
	Note 17 - Fair Value of Financial Instruments
	FASB ASC 825, “Disclosures about Fair Value of Financial Instruments” requires disclosure of the fair value information about financial instruments, whether or not recognized in the balance sheet, for which it is practicable to estimate such value. In cases where quoted market prices are not available, fair values are based on estimates using present value or other market value techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instrument. The aggregate fair value amounts presented below do not represent the underlying value of the Corporation.
	The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:
	Cash and Cash Equivalents
	The carrying amounts reported in the balance sheet for cash and cash equivalents approximate their fair values.
	Investment Securities
	Estimated fair values for investment securities are generally valued by an independent third party based on market data, utilizing pricing models that vary by asset and incorporate available trade, bid and other market information. Management reviews, annually, the process utilized by its independent third-party valuation experts. On a quarterly basis, Management tests the validity of the prices provided by the third party by selecting a representative sample of the portfolio and obtaining actual trade results, or if actual trade results are not available, competitive broker pricing. See Note 3 of the Notes to Consolidated Financial Statements for more information.
	Loans Held for Sale
	The fair value of loans held for sale is based on pricing obtained from secondary markets.
	Net Portfolio Loans and Leases
	For variable-rate loans that re-price frequently and which have no significant change in credit risk, estimated fair values are based on carrying values. Fair values of certain mortgage loans and consumer loans are estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality and is indicative of an entry price. The estimated fair value of nonperforming loans is based on discounted estimated cash flows as determined by the internal loan review of the Corporation or the appraised market value of the underlying collateral, as determined by independent third party appraisers. This technique does not reflect an exit price.
	Impaired Loans
	The Corporation evaluates and values impaired loans at the time the loan is identified as impaired, and the fair values of such loans are estimated using Level 3 inputs in the fair value hierarchy. Each loan’s collateral has a unique appraisal and management’s discount of the value is based on the factors unique to each impaired loan. The significant unobservable input in determining the fair value is management’s subjective discount on appraisals of the collateral securing the loan, which range from 10% - 50%. Collateral may consist of real estate and/or business assets including equipment, inventory and/or accounts receivable and the value of these assets is determined based on the appraisals by qualified licensed appraisers hired by the Corporation. Appraised and reported values may be discounted based on management’s historical knowledge, changes in market conditions from the time of valuation, estimated costs to sell, and/or management’s expertise and knowledge of the client and the client’s business.
	Mortgage Servicing Rights
	The fair value of the MSRs for these periods was determined using a proprietary third-party valuation model that calculates the present value of estimated future servicing income. The model incorporates assumptions that market participants use in estimating future net servicing income, including estimates of prepayment speeds and discount rates. Due to the proprietary nature of the valuation model used, the Corporation classifies the value of MSRs as using Level 3 inputs.
	Other Assets
	The carrying amount of accrued interest receivable, income taxes receivable and other investments approximates fair value. The fair value of the interest-rate swap derivative is derived from quoted prices for similar instruments in active markets and is classified as using Level 2 inputs.
	Deposits
	The estimated fair values disclosed for noninterest-bearing demand deposits, savings, NOW accounts, and market rate accounts are, by definition, equal to the amounts payable on demand at the reporting date (i.e., their carrying amounts). Fair values for certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of expected monthly maturities on the certificate of deposit. FASB Codification 825 defines the fair value of demand deposits as the amount payable on demand as of the reporting date and prohibits adjusting estimated fair value from any value derived from retaining those deposits for an expected future period of time.
	Short-term borrowings
	The carrying amount of short-term borrowings, which include overnight repurchase agreements, fed funds and FHLB advances with original maturity of one year or less, approximates their fair value.
	Long-term FHLB Advances and Other Borrowings
	The fair value of long-term FHLB advances (with original maturities of greater than one year) and other borrowings, which include a $5.4 million term loan, is established using a discounted cash flow calculation that applies interest rates currently being offered on mid-term and long term borrowings.
	Other Liabilities
	The carrying amounts of accrued interest payable and other accrued payables approximate fair value.
	Off-Balance Sheet Instruments
	Estimated fair values of the Corporation’s commitments to extend credit, standby letters of credit and financial guarantees are not included in the table below as their carrying values generally approximate their fair values. These instruments generate fees that approximate those currently charged to originate similar commitments.
	As of the dates indicated, the carrying amount and estimated fair value of the Corporation’s financial instruments are as follows:
				As of September 30,				As of December 31
				2014				2013
	(dollars in thousands)		Fair Value	Carrying		Estimated		Carrying		Estimated
			Hierarchy Level*	Amount		Fair Value		Amount		Fair Value
	Financial assets:
	Cash and cash equivalents		Level 1	$	67,565	$	67,565	$	81,071	$	81,071
	Investment securities, available for sale		See Note 16		265,939		265,939		285,808		285,808
	Investment securities, trading		Level 2		3,803		3,803		3,437		3,437
	Loans held for sale		Level 2		1,375		1,375		1,350		1,350
	Net portfolio loans and leases		Level 3		1,629,639		1,641,873		1,531,670		1,534,631
	Mortgage servicing rights		Level 3		4,796		5,719		4,750		5,733
	Other assets		See Note 16**		23,142		23,142		21,819		21,819
	Total financial assets			$	1,996,259	$	2,009,416	$	1,929,905	$	1,933,849
	Financial liabilities:
	Deposits		Level 2	$	1,610,332	$	1,609,694	$	1,591,347	$	1,591,215
	Short-term borrowings		Level 2		13,980		13,980		10,891		10,891
	Long-term FHLB advances and other borrowings		Level 2		230,574		229,924		205,644		205,149
	Other liabilities		Level 2		21,387		21,387		23,885		23,885
	Total financial liabilities			$	1,876,273	$	1,874,985	$	1,831,767	$	1,831,140
	*	See Note 16 for a description of fair value hierarchy levels.
	**	Included in Other Assets as of September 30, 2014 and December 31, 2013 was $0.4 million and $1.1 million, respectively, of derivatives whose fair value was determined using Level 2 inputs.

New_Accounting_Pronouncements

New Accounting Pronouncements	9 Months Ended
	Sep. 30, 2014
New Accounting Pronouncements	'
	Note 18 - New Accounting Pronouncements
	FASB ASU 2014-01, “Investments - Equity Method and Joint Ventures (Topic 323), Accounting for Investments in Qualified Affordable Housing Projects.”
	Issued in January 2014, ASU 2014-01 provides guidance on accounting for investments by a reporting entity in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for the low-income housing tax credit. The amendments in this update permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). For those investments in qualified affordable housing projects not accounted for using the proportional amortization method, the investment should be accounted for as an equity method investment or a cost method investment in accordance with Subtopic 970-323. The amendments in this update should be applied retrospectively to all periods presented. A reporting entity that uses the effective yield method to account for its investments in qualified affordable housing projects before the date of adoption may continue to apply the effective yield method for those preexisting investments. The amendments in this update are effective for public business entities for annual periods and interim reporting periods within those annual periods, beginning after December 15, 2014. The Corporation is evaluating the impact of the adoption of this guidance. However, it is not expected to have a significant impact on the presentation of the Corporation’s consolidated financial statements.
	FASB ASU 2014-04, “Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (a consensus of the FASB Emerging Issues Task Force).”
	Issued in January 2014, ASU 2014-04 clarifies when an “in substance repossession or foreclosure” occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loans, such that all or a portion of the loan should be derecognized and the real estate property recognized. ASU 2014-04 states that a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure, or the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. The amendments of ASU 2014-04 also require interim and annual disclosure of both the amount of foreclosed residential real estate property held by the creditor and the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure. The amendments of ASU 2014-04 are effective for interim and annual periods beginning after December 15, 2014, and may be applied using either a modified retrospective transition method or a prospective transition method as described in ASU 2014-04. The adoption of ASU 2014-04 will be a change in presentation only, for the newly required disclosures, and is not expected to have a significant impact to the Corporation’s consolidated financial statements.
	FASB ASU 2014-09, “Revenue from Contracts with Customers”
	Issued on May 28, 2014, ASU No. 2014-09 requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for the Corporation on January 1, 2017. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. The Corporation is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Corporation has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.
	FASB ASU 2014-12, “Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period”
	Issued on June 19, 2014, ASU 2014-12 requires a reporting entity to treat a performance target that affects vesting and that could be achieved after the requisite service period as a performance condition. A reporting entity should apply FASB ASC Topic 718, Compensation—Stock Compensation, to awards with performance conditions that affect vesting. A performance target that affects vesting and could be achieved after completion of the service period should be treated as a performance condition under FASB ASC 718 and, as a result, should not be included in the estimation of the grant-date fair value of the award. An entity should recognize compensation cost for the award when it becomes probable that the performance target will be achieved. In the event that an entity determines that it is probable that a performance target will be achieved before the end of the service period, the compensation cost of the award should be recognized prospectively over the remaining service period. For all entities, ASU 2014-12 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015. Early adoption is permitted. ASU 2014-12 may be adopted either prospectively for share-based payment awards granted or modified on or after the effective date, or retrospectively, using a modified retrospective approach. The modified retrospective approach would apply to share-based payment awards outstanding as of the beginning of the earliest annual period presented in the financial statements on adoption, and to all new or modified awards thereafter. The Corporation is evaluating the impact of the adoption of this guidance. However, it is not expected to have a significant impact on its results of operations.
	FASB ASU 2014-14, “Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure (a consensus of the FASB Emerging Issues Task Force)”
	Issued on August 14, 2014, ASU 2014-14 will require creditors to derecognize certain foreclosed government-guaranteed mortgage loans and to recognize a separate other receivable that is measured at the amount the creditor expects to recover from the guarantor, and to treat the guarantee and the receivable as a single unit of account. The new standard is effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. An entity can elect a prospective or a modified retrospective transition method, but must use the same transition method that it elected under FASB ASU No. 2014-04, Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. Early adoption, including adoption in an interim period, is permitted if the entity already adopted ASU 2014-04. The Corporation is evaluating the impact of the adoption of this guidance. However, it is not expected to have a significant impact on its consolidated financial statements.
	FASB ASU 2014-15, “Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern”
	Issued on August 15, 2014, ASU 2014-15 describes how an entity should assess its ability to meet obligations and sets disclosure requirements for how this information should be disclosed in the financial statements. The standard provides accounting guidance that will be used with existing auditing standards. The new standard applies to all entities for the first annual period ending after December 15, 2016, and interim periods thereafter. The Corporation is evaluating the impact of the adoption of this guidance. However, it is not expected to have a significant impact on its consolidated financial statements.

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2014
Subsequent Events	'
	Note 19 – Subsequent Events
	On October 1, 2014, The Bryn Mawr Trust Company (the “Bank”), the wholly-owned subsidiary of the Corporation, completed its previously announced stock purchase agreement with Donald W. Parker (“Parker”), Edward F. Lee (“Lee”), and Powers Craft Parker & Beard, Inc., a Pennsylvania corporation (“Powers Craft”), pursuant to which the Bank acquired all of the issued and outstanding capital stock of Powers Craft from Parker and Lee. Powers Craft is an insurance brokerage located in Rosemont, Pennsylvania. The final consideration paid included $5.4 million in cash and $1.6 million in contingent cash payments. The contingent cash payments will be paid in three installments after each of the first, second and third anniversaries of the closing date of the transaction and are subject to certain post-closing contingencies.
	On October 23, 2014, the Corporation entered into a definitive Amendment (the “Amendment”) to that certain Agreement and Plan of Merger, dated as of May 5, 2014 (the “Agreement”), between the Corporation and Continental Bank Holdings, Inc. (“CBH”). In order to achieve certain administrative efficiencies, the parties agreed in the Amendment for the closing of the merger under the Agreement to occur no earlier than January 1, 2015, and to extend to January 5, 2015 the initial date at which, if the merger of CBH with and into the Corporation pursuant to the Agreement, as amended, has not closed, either the Corporation or CBH may terminate the Agreement. No other terms of the Agreement have changed as a result of the Amendment.

Earnings_per_Common_Share_Tabl

Earnings per Common Share (Tables)	9 Months Ended
	Sep. 30, 2014
Calculation of Basic and Diluted Earnings per Share	'
	All weighted average shares, actual shares and per share information in the financial statements have been adjusted retroactively for the effect of stock dividends and splits.
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
	(dollars in thousands except per share data)	2014		2013		2014		2013
	Numerator:
	Net income available to common shareholders	$	6,506	$	6,401	$	20,799	$	17,973
	Denominator for basic earnings per share – weighted average shares outstanding		13,600,348		13,336,799		13,539,327		13,274,801
	Effect of dilutive common shares		272,516		275,343		294,114		244,302
	Denominator for diluted earnings per share – adjusted weighted average shares outstanding		13,872,864		13,612,142		13,833,441		13,519,103
	Basic earnings per share	$	0.48	$	0.48	$	1.54	$	1.35
	Diluted earnings per share	$	0.47	$	0.47	$	1.5	$	1.33
	Antidilutive shares excluded from computation of average dilutive earnings per share		—		—		—		123,882

Investment_Securities_Tables

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2014
Schedule of Amortized Cost and Fair Value of Investment Securities Available for Sale	'
	The amortized cost and fair value of investment securities available for sale are as follows:
	As of September 30, 2014
	(dollars in thousands)		Amortized		Gross			Gross			Fair Value
			Cost		Unrealized			Unrealized
					Gains			Losses
	U.S. Treasury securities		$	102	$	—		$	(2	)	$	100
	Obligations of U.S. government agency securities			71,443		152			(485	)		71,110
	Obligations of state & political subdivisions			33,555		188			(48	)		33,695
	Mortgage-backed securities			104,670		1,815			(262	)		106,223
	Collateralized mortgage obligations			37,071		316			(277	)		37,110
	Other investments			17,383		329			(11	)		17,701
	Total		$	264,224	$	2,800		$	(1,085	)	$	265,939
	As of December 31, 2013
	(dollars in thousands)		Amortized		Gross			Gross			Fair Value
			Cost		Unrealized			Unrealized
					Gains			Losses
	U.S. Treasury securities		$	102	$	—		$	(3	)	$	99
	Obligations of the U.S. government and agencies			71,097		149			(1,678	)		69,568
	Obligations of state and political subdivisions			37,140		141			(304	)		36,977
	Mortgage-backed securities			119,044		1,392			(1,073	)		119,363
	Collateralized mortgage obligations			44,463		273			(493	)		44,243
	Other investments			15,281		301			(24	)		15,558
	Total		$	287,127	$	2,256		$	(3,575	)	$	285,808
Schedule of Amount of Investment Securities Available for Sale in Unrealized Loss Position	'
	The following tables detail the amount of investment securities available for sale that were in an unrealized loss position as of the dates indicated:
	As of September 30, 2014
			Less than 12					12 Months						Total
			Months					or Longer
	(dollars in thousands)		Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
			Value		Losses			Value			Losses			Value		Losses
	U.S. Treasury securities		$	—	$	—		$	100		$	(2	)	$	100	$	(2	)
	Obligations of the U.S. government and agencies			25,963		(37	)		22,550			(448	)		48,513		(485	)
	Obligations of state and political subdivisions			2,070		(7	)		4,651			(41	)		6,721		(48	)
	Mortgage-backed securities			15,848		(58	)		14,592			(204	)		30,440		(262	)
	Collateralized mortgage obligations			8,067		(58	)		9,265			(219	)		17,332		(277	)
	Other investments			769		(11	)		—			—			769		(11	)
	Total		$	52,717	$	(171	)	$	51,158		$	(914	)	$	103,875	$	(1,085	)
	As of December 31, 2013
			Less than 12					12 Months						Total
			Months					or Longer
	(dollars in thousands)		Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
			Value		Losses			Value			Losses			Value		Losses
	U.S. Treasury securities		$	99	$	(3	)	$	—		$	—		$	99	$	(3	)
	Obligations of the U.S. government and agencies			41,201		(1,391	)		5,774			(287	)		46,975		(1,678	)
	Obligations of state and political subdivisions			13,020		(233	)		4,543			(71	)		17,563		(304	)
	Mortgage-backed securities			55,672		(972	)		2,302			(101	)		57,974		(1,073	)
	Collateralized mortgage obligations			26,395		(493	)		—			—			26,395		(493	)
	Other investments			1,494		(24	)		—			—			1,494		(24	)
	Total		$	137,881	$	(3,116	)	$	12,619		$	(459	)	$	150,500	$	(3,575	)
Schedule of Amortized Cost and Fair Value of Investment Securities Available for Sale	'
	The amortized cost and fair value of investment securities available for sale as of September 30, 2014 and December 31, 2013, by contractual maturity, are shown below:
			September 30, 2014					December 31, 2013
	(dollars in thousands)		Amortized		Fair			Amortized			Fair
			Cost		Value			Cost			Value
	Investment securities1:
	Due in one year or less		$	15,719	$	15,752		$	7,859		$	7,869
	Due after one year through five years			64,780		64,833			49,790			49,721
	Due after five years through ten years			26,501		26,220			51,793			50,117
	Due after ten years			—		—			797			824
	Subtotal			107,000		106,805			110,239			108,531
	Mortgage-related securities2			141,741		143,333			163,507			163,606
	Total		$	248,741	$	250,138		$	273,746		$	272,137
	1	Included in the investment portfolio, but not in the table above, are mutual funds with a fair value, as of September 30, 2014 and December 31, 2013, of $15.8 million and $13.7 million, respectively, which have no stated maturity.
	2	Expected maturities of mortgage-related securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

Loans_and_Leases_Tables

Loans and Leases (Tables)	9 Months Ended
	Sep. 30, 2014
Summary of Loans and Leases Outstanding	'
	Loans and leases outstanding are detailed by category as follows:
			September 30,			December 31,
			2014			2013
	Loans held for sale		$	1,375		$	1,350
	Real estate loans:
	Commercial mortgage		$	683,558		$	625,341
	Home equity lines and loans			183,314			189,571
	Residential mortgage			314,127			300,243
	Construction			59,923			46,369
	Total real estate loans			1,240,922			1,161,524
	Commercial and industrial			342,524			328,459
	Consumer			16,810			16,926
	Leases			44,982			40,276
	Total portfolio loans and leases			1,645,238			1,547,185
	Total loans and leases		$	1,646,613		$	1,548,535
	Loans with fixed rates		$	905,050		$	850,168
	Loans with adjustable or floating rates			741,563			698,367
	Total loans and leases		$	1,646,613		$	1,548,535
	Net deferred loan origination costs included in the above loan table		$	176		$	222
Summary of Net Investments in Leases	'
	Components of the net investment in leases are detailed as follows:
	(dollars in thousands)		September 30,			December 31,
			2014			2013
	Minimum lease payments receivable		$	51,089		$	45,866
	Unearned lease income			(8,281	)		(7,534	)
	Initial direct costs and deferred fees			2,174			1,944
	Total		$	44,982		$	40,276
Summary of Non-Performing Loans and Leases	'
	Non-Performing Loans and Leases(1)
	(dollars in thousands)		September 30,			December 31,
			2014			2013
	Non-accrual loans and leases:
	Commercial mortgage		$	709		$	478
	Home equity lines and loans			1,013			1,262
	Residential mortgage			3,751			4,377
	Construction			263			830
	Commercial and industrial			2,570			3,539
	Consumer			—			20
	Leases			30			24
	Total		$	8,336		$	10,530
	(1)	Purchased credit-impaired loans, which have been recorded at their fair values at acquisition, and which are performing, are excluded from this table, with the exception of $63 thousand and $238 thousand of purchased credit-impaired loans as of September 30, 2014 and December 31, 2013, respectively, which became non-performing subsequent to acquisition.
Schedule of Carrying Amount of Acquired Credit Impaired Loan	'
	Purchased Credit-Impaired Loans
	The outstanding principal balance and related carrying amount of credit-impaired loans, for which the Corporation applies ASC 310-30, Accounting for Purchased Loans with Deteriorated Credit Quality, to account for the interest earned, as of the dates indicated, are as follows:
	(dollars in thousands)		September 30,			December 31,
			2014			2013
	Outstanding principal balance		$	12,689		$	14,293
	Carrying amount(1)		$	9,045		$	9,880
	(1)	Includes $106 thousand and $293 thousand purchased credit-impaired loans as of September 30, 2014 and December 31, 2013, respectively, for which the Corporation could not estimate the timing or amount of expected cash flows to be collected at acquisition, and for which no accretable yield is recognized. Additionally, the table above includes $63 thousand and $238 thousand of purchased credit-impaired loans as of September 30, 2014 and December 31, 2013, respectively, which became non-performing subsequent to acquisition, which are disclosed in Note 4C, above, and which also have no accretable yield.
Schedule of Changes in Accretable Discount on Purchased Credit-Impaired Loans	'
	The following table presents changes in the accretable discount on purchased credit-impaired loans, for which the Corporation applies ASC 310-30, for the nine months ended September 30, 2014:
	(dollars in thousands)		Accretable
			Discount
	Balance, December 31, 2013		$	6,134
	Accretion			(1,219	)
	Reclassifications from nonaccretable difference			930
	Additions/adjustments			(123	)
	Disposals			(2	)
	Balance, September 30, 2014		$	5,720
Schedule of Aging of Corporation's Loan and Lease Portfolio	'
	The following tables present an aging of the Corporation’s loan and lease portfolio as of the dates indicated:
			Accruing Loans and Leases																		Nonaccrual			Total
																					Loans and			Loans
																					Leases			and
	(dollars in thousands)		30 – 59			60 – 89			Over 89			Total Past			Current			Total						Leases
			Days			Days			Days			Due						Accruing
			Past Due			Past Due			Past Due									Loans and
																		Leases
	As of September 30, 2014
	Commercial mortgage		$	—		$	—		$	—		$	—		$	682,849		$	682,849		$	709		$	683,558
	Home equity lines and loans			443			180			—			623			181,678			182,301			1,013			183,314
	Residential mortgage			896			35			—			931			309,445			310,376			3,751			314,127
	Construction			—			—			—			—			59,660			59,660			263			59,923
	Commercial and industrial			34			136			—			170			339,784			339,954			2,570			342,524
	Consumer			—			—			—			—			16,810			16,810			—			16,810
	Leases			2			15			—			17			44,935			44,952			30			44,982
			$	1,375		$	366		$	—		$	1,741		$	1,635,161		$	1,636,902		$	8,336		$	1,645,238
			Accruing Loans and Leases																		Nonaccrual			Total
																					Loans and			Loans
																					Leases			and
	(dollars in thousands)		30 – 59			60 – 89			Over 89			Total Past			Current			Total						Leases
			Days			Days			Days			Due						Accruing
			Past Due			Past Due			Past Due									Loans and
																		Leases
	As of December 31, 2013
	Commercial mortgage		$	241		$	—		$	—		$	241		$	624,622		$	624,863		$	478		$	625,341
	Home equity lines and loans			209			—			—			209			188,100			188,309			1,262			189,571
	Residential mortgage			773			35			—			808			295,058			295,866			4,377			300,243
	Construction			—			—			—			—			45,539			45,539			830			46,369
	Commercial and industrial			334			—			—			334			324,586			324,920			3,539			328,459
	Consumer			2			4			—			6			16,900			16,906			20			16,926
	Leases			60			60			—			120			40,132			40,252			24			40,276
			$	1,619		$	99		$	—		$	1,718		$	1,534,937		$	1,536,655		$	10,530		$	1,547,185
Rollforward of Corporation's Allowance for Loan and Leases Losses by Loan Category	'
	The following tables detail the roll-forward of the Corporation’s Allowance for the three and nine months ended September 30, 2014:
	(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Unallocated			Total
			Mortgage			Lines and			Mortgage						and
						Loans									Industrial
	Balance, June 30, 2014		$	3,831		$	2,594		$	2,387		$	1,000		$	4,658		$	261		$	441		$	298		$	15,470
	Charge-offs			(80	)		(95	)		(11	)		—			(19	)		(42	)		(246	)		—			(493	)
	Recoveries			—			—			9			—			1			7			55			—			72
	Provision for loan and lease losses			169			(340	)		(136	)		245			458			(43	)		199			(2	)		550
	Balance, September 30, 2014		$	3,920		$	2,159		$	2,249		$	1,245		$	5,098		$	183		$	449		$	296		$	15,599
	(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Unallocated			Total
			Mortgage			Lines and			Mortgage						and
						Loans									Industrial
	Balance, December 31, 2013		$	3,797		$	2,204		$	2,446		$	845		$	5,011		$	259		$	604		$	349		$	15,515
	Charge-offs			(100	)		(538	)		(28	)		—			(188	)		(113	)		(368	)					(1,335	)
	Recoveries			1			2			21			—			55			13			127						219
	Provision for loan and lease losses			222			491			(190	)		400			220			24			86			(53	)		1,200
	Balance September 30, 2014		$	3,920		$	2,159		$	2,249		$	1,245		$	5,098		$	183		$	449		$	296		$	15,599
	The following table details the roll-forward of the Corporation’s Allowance for the three and nine months ended September 30, 2013:
	(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Unallocated			Total
			Mortgage			Lines and			Mortgage						and
						Loans									Industrial
	Balance, June 30, 2013		$	4,481		$	2,109		$	1,773		$	653		$	4,295		$	218		$	551		$	364		$	14,444
	Charge-offs			(19	)		(105	)		(203	)		—			(19	)		(31	)		(124	)		—			(501	)
	Recoveries			—			29			5			6			20			3			62			—			125
	Provision for loan and lease losses			20			153			523			9			134			68			82			(30	)		959
	Balance, September 30, 2013		$	4,482		$	2,186		$	2,098		$	668		$	4,430		$	258		$	571		$	334		$	15,027
	(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Unallocated			Total
			Mortgage			Lines and			Mortgage						and
						Loans									Industrial
	Balance, December 31, 2012		$	3,907		$	1,857		$	2,024		$	1,019		$	4,637		$	189		$	493		$	299		$	14,425
	Charge-offs			(19	)		(457	)		(203	)		(720	)		(737	)		(101	)		(258	)		—			(2,495	)
	Recoveries			—			29			13			24			64			7			197			—			334
	Provision for loan and lease losses			594			757			264			345			466			163			139			35			2,763
	Balance, September 30, 2013		$	4,482		$	2,186		$	2,098		$	668		$	4,430		$	258		$	571		$	334		$	15,027
Allocation of Allowance by Portfolio Segment Based on Methodology Used to Evaluate Loans and Leases for Impairment	'
	The following table details the allocation of the Allowance by portfolio segment based on the methodology used to evaluate the loans and leases for impairment as of September 30, 2014 and December 31, 2013:
	(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Unallocated			Total
			Mortgage			Lines and			Mortgage						and
						Loans									Industrial
	As of September 30, 2014
	Allowance on loans and leases:
	Individually evaluated for impairment		$	—		$	120		$	613		$	—		$	892		$	32		$	—		$	—		$	1,657
	Collectively evaluated for impairment			3,916			2,039			1,636			1,245			4,206			151			449			296			13,938
	Purchased credit-impaired(1)			4			—			—			—			—			—			—			—			4
	Total		$	3,920		$	2,159		$	2,249		$	1,245		$	5,098		$	183		$	449		$	296		$	15,599
	As of December 31, 2013
	Allowance on loans and leases:
	Individually evaluated for impairment		$	—		$	121		$	814		$	—		$	532		$	52		$	—		$	—		$	1,519
	Collectively evaluated for impairment			3,797			2,083			1,632			845			4,479			207			604			349			13,996
	Purchased credit-impaired(1)			—			—			—			—			—			—			—			—			—
	Total		$	3,797		$	2,204		$	2,446		$	845		$	5,011		$	259		$	604		$	349		$	15,515
	-1	Purchased credit-impaired loans are evaluated for impairment on an individual basis.
Carrying Value for Loans and Leases by Portfolio Segment Based on Methodology Used to Evaluate Loans and Leases for Impairment one	'
	The following table details the carrying value for loans and leases by portfolio segment based on the methodology used to evaluate the loans and leases for impairment as of September 30, 2014 and December 31, 2013:
	(dollars in thousands)		Commercial			Home Equity			Residential			Construction			Commercial			Consumer			Leases			Total
			Mortgage			Lines and			Mortgage						and
						Loans									Industrial
	As of September 30, 2014
	Carrying value of loans and leases:
	Individually evaluated for impairment		$	646		$	1,237		$	9,314		$	263		$	3,650		$	33		$	—		$	15,143
	Collectively evaluated for impairment			674,272			182,064			304,784			59,615			338,557			16,777			44,982			1,621,051
	Purchased credit-impaired(1)			8,640			13			29			45			317			—			—			9,044
	Total		$	683,558		$	183,314		$	314,127		$	59,923		$	342,524		$	16,810		$	44,982		$	1,645,238
	As of December 31, 2013
	Carrying value of loans and leases:
	Individually evaluated for impairment		$	236		$	1,428		$	9,860		$	1,172		$	4,758		$	52		$	—		$	17,506
	Collectively evaluated for impairment			616,077			188,128			290,345			44,715			323,384			16,874			40,276			1,519,799
	Purchased credit-impaired(1)			9,028			15			38			482			317			—			—			9,880
	Total		$	625,341		$	189,571		$	300,243		$	46,369		$	328,459		$	16,926		$	40,276		$	1,547,185
	(1)	Purchased credit-impaired loans are evaluated for impairment on an individual basis.
Carrying Value of Loans and Leases by Portfolio Segment Based on the Credit Quality Indicators	'
	The following tables detail the carrying value of loans and leases by portfolio segment based on the credit quality indicators used to determine the Allowance as of September 30, 2014 and December 31, 2013:
	Credit Risk Profile by Internally Assigned Grade
	(dollars in thousands)		Commercial Mortgage						Construction						Commercial and Industrial						Total
			September 30,			December 31,			September 30,			December 31,			September 30,			December 31,			September 30,			December 31,
			2014			2013			2014			2013			2014			2013			2014			2013
	Pass		$	677,136		$	620,227		$	59,660		$	43,812		$	335,153		$	320,211		$	1,071,949		$	984,250
	Special Mention			4,789			2,793			—			—			1,405			387			6,194			3,180
	Substandard			1,633			2,321			263			2,557			5,966			7,861			7,862			12,739
	Total		$	683,558		$	625,341		$	59,923		$	46,369		$	342,524		$	328,459		$	1,086,005		$	1,000,169
	Credit Risk Profile by Payment Activity
	(dollars in thousands)		Residential Mortgage						Home Equity Lines and Loans						Consumer						Leases						Total
			September 30,			December 31,			September 30,			December 31,			September 30,			December 31,			September 30,			December 31,			September 30,			December 31,
			2014			2013			2014			2013			2014			2013			2014			2013			2014			2013
	Performing		$	310,376		$	295,866		$	182,301		$	188,309		$	16,810		$	16,906		$	44,952		$	40,252		$	554,439		$	541,333
	Non-performing			3,751			4,377			1,013			1,262			—			20			30			24			4,794			5,683
	Total		$	314,127		$	300,243		$	183,314		$	189,571		$	16,810		$	16,926		$	44,982		$	40,276		$	559,233		$	547,016
Balance of Troubled Debt Restructurings	'
	The following table presents the balance of TDRs as of the indicated dates:
	(dollars in thousands)		September 30,			December 31,
			2014			2013
	TDRs included in nonperforming loans and leases		$	1,725		$	1,699
	TDRs in compliance with modified terms			6,913			7,277
	Total TDRs		$	8,638		$	8,976
Loan and Lease Modifications Categorized as Trouble Debt Restructurings	'
	The following tables present information regarding loan and lease modifications categorized as TDRs for the three and nine months ended September 30, 2014:
			For the Three Months Ended September 30, 2014
	(dollars in thousands)		Number of Contracts			Pre-Modification			Post-Modification
						Outstanding Recorded			Outstanding  Recorded
						Investment			Investment
	Residential mortgage			1		$	79		$	79
	Total			1		$	79		$	79
			For the Nine Months Ended September 30, 2014
	(dollars in thousands)		Number of Contracts			Pre-Modification			Post-Modification
						Outstanding Recorded			Outstanding  Recorded
						Investment			Investment
	Residential mortgage			3		$	471		$	473
	Home equity lines and loans			1			70			70
	Commercial and industrial			1			246			255
	Total			5		$	787		$	798
	The following tables present information regarding the types of loan and lease modifications made for the three and nine months ended September 30, 2014:
			Number of Contracts for the Three Months Ended September 30, 2014
			Interest			Loan Term			Interest Rate			Interest Rate			Contractual			Forgiveness
			Rate			Extension			Change and			Change			Payment			of Interest
			Change						Term Extension			and/or			Reduction
												Interest-Only			(Leases only)
												Period
	Residential mortgage			—			—			1			—			—			—
	Total			—			—			1			—			—			—
			Number of Contracts for the Nine Months Ended September 30, 2014
			Interest			Loan Term			Interest Rate			Interest  Rate			Contractual			Forgiveness
			Rate			Extension			Change and			Change			Payment			of Interest
			Change						Term Extension			and/or			Reduction
												Interest-Only			(Leases only)
												Period
	Residential mortgage			—			—			3			—			—			—
	Home equity lines and loans			—			1			—			—			—			—
	Commercial and industrial			—			—			1			—			—			—
	Total			—			1			4			—			—			—
Summary of Recorded Investment and Principal Balance of Impaired Loans by Portfolio Segment	'
	The following tables detail the recorded investment and principal balance of impaired loans by portfolio segment, their related Allowance and interest income recognized as of the dates or for the periods indicated:
	(dollars in thousands)		Recorded			Principal			Related			Average			Interest			Cash-Basis
			Investment(2)			Balance			Allowance			Principal			Income			Interest
												Balance			Recognized			Income
																		Recognized
	As of or for the three months ended September 30, 2014
	Impaired loans with related Allowance:
	Home equity lines and loans		$	272		$	360		$	120		$	360		$	—		$	—
	Residential mortgage			4,766			4,755			613			4,863			38			—
	Commercial and industrial			3,012			3,213			892			3,250			15			—
	Consumer			33			33			32			33			—			—
	Total		$	8,083		$	8,361		$	1,657		$	8,506		$	53		$	—
	Impaired loans without related Allowance(1) (3):
	Commercial mortgage		$	646		$	667		$	—		$	713		$	—		$	—
	Home equity lines and loans			965			969			—			1,067			2			—
	Residential mortgage			4,548			4,873			—			5,253			29			—
	Construction			263			1,225			—			1,316			—			—
	Commercial and industrial			638			641			—			661			—
	Total		$	7,060		$	8,375		$	—		$	9,010		$	31		$	—
	Grand total		$	15,143		$	16,736		$	1,657		$	17,516		$	84		$	—
	(1)	The table above does not include the recorded investment of $43 thousand of impaired leases without a related Allowance.
	-2	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
	(3)	This table excludes all purchased credit-impaired loans, which are discussed in Note 4D, above.
	(dollars in thousands)		Recorded			Principal			Related			Average			Interest			Cash-Basis
			Investment(2)			Balance			Allowance			Principal			Income			Interest
												Balance			Recognized			Income
																		Recognized
	As of or for the nine months ended September 30, 2014
	Impaired loans with related Allowance:
	Home equity lines and loans		$	272		$	360		$	120		$	359		$	6		$	—
	Residential mortgage			4,766			4,755			613			4,774			115			—
	Commercial and industrial			3,012			3,213			892			3,276			34			—
	Consumer			33			33			32			33			1			—
	Total		$	8,083		$	8,361		$	1,657		$	8,442		$	156		$	—
	Impaired loans without related Allowance(1) (3):
	Commercial mortgage		$	646		$	667		$	—		$	716		$	18		$	—
	Home equity lines and loans			965			969			—			1,075			9			—
	Residential mortgage			4,548			4,873			—			5,235			103			—
	Construction			263			1,225			—			1,495			—			—
	Commercial and industrial			638			641			—			670			2			—
	Total		$	7,060		$	8,375		$	—		$	9,191		$	132		$	—
	Grand total		$	15,143		$	16,736		$	1,657		$	17,633		$	288		$	—
	(1)	The table above does not include the recorded investment of $43 thousand of impaired leases without a related Allowance.
	-2	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
	(3)	This table excludes all purchased credit-impaired loans, which are discussed in Note 4D, above.
	(dollars in thousands)		Recorded			Principal			Related			Average			Interest			Cash-Basis
			Investment(2)			Balance			Allowance			Principal			Income			Interest
												Balance			Recognized			Income
																		Recognized
	As of or for the three months ended September 30, 2013
	Impaired loans with related Allowance:
	Home equity lines and loans		$	544		$	589		$	119		$	619		$	5		$	—
	Residential mortgage			4,448			4,419			628			4,485			28			—
	Commercial and industrial			2,586			2,709			544			2,798			21			—
	Consumer			82			82			56			84			1			—
	Total		$	7,660		$	7,799		$	1,347		$	7,986		$	55		$	—
	Impaired loans without related Allowance(1) (3):
	Commercial mortgage		$	421		$	432		$	—		$	471		$	—		$	—
	Home equity lines and loans			1,523			1,532			—			1,631			2			—
	Residential mortgage			5,091			5,340			—			5,598			39			—
	Construction			3,072			4,035			—			3,824			13			—
	Commercial and industrial			1,641			1,812			—			1,817			1			—
	Total		$	11,748		$	13,151		$	—		$	13,341		$	55		$	—
Grand total		$	19,408		$	20,950		$	1,347		$	21,327		$	110		$	—
(1)	The table above does not include the recorded investment of $62 thousand of impaired leases without a related Allowance.
-2	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
-3	This table excludes all purchased credit-impaired loans, which are discussed in Note 5D, above.
(dollars in thousands)		Recorded			Principal			Related			Average			Interest			Cash-Basis
		Investment(2)			Balance			Allowance			Principal			Income			Interest
											Balance			Recognized			Income
																	Recognized
As of or for the nine months ended September 30, 2013
Impaired loans with related Allowance:
Home equity lines and loans		$	544		$	589		$	119		$	617		$	15		$	—
Residential mortgage			4,448			4,419			628			4,408			83			—
Commercial and industrial			2,586			2,709			544			2,823			53			—
Consumer			82			82			56			86			4			—
Total		$	7,660		$	7,799		$	1,347		$	7,934		$	155		$	—
Impaired loans without related Allowance(1) (3):
Commercial mortgage		$	421		$	432		$	—		$	471		$	—		$	—
Home equity lines and loans			1,523			1,532			—			1,631			2			—
Residential mortgage			5,091			5,340			—			5,598			39			—
Construction			3,072			4,035			—			3,824			13			—
Commercial and industrial			1,641			1,812			—			1,817			1			—
Total		$	11,748		$	13,151		$	—		$	13,341		$	55		$	—
Grand total		$	19,408		$	20,950		$	1,347		$	21,275		$	210		$	—
(1)	The table above does not include the recorded investment of $62 thousand of impaired leases without a related Allowance.
-2	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
-3	This table excludes all purchased credit-impaired loans, which are discussed in Note 5D, above.
(dollars in thousands)		Recorded			Principal			Related
		Investment(2)			Balance			Allowance
As of December 31, 2013
Impaired loans with related allowance:
Home equity lines and loans		$	277		$	279		$	121
Residential mortgage			5,297			5,312			814
Commercial and industrial			2,985			3,100			532
Consumer			52			54			52
Total			8,611			8,745			1,519
Impaired loans(1),(3) without related allowance:
Commercial mortgage			236			237			—
Home equity lines and loans			1,151			1,159			—
Residential mortgage			4,563			4,911			—
Construction			1,172			2,134			—
Commercial and industrial			1,773			1,954			—
Total			8,895			10,395			—
Grand total		$	17,506		$	19,140		$	1,519
(1)	The table above does not include the recorded investment of $63 thousand of impaired leases without a related Allowance.
(2)	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
(3)	This table excludes all purchased credit-impaired loans, which are discussed in Note 4D, above.

Deposits_Tables

Deposits (Tables)	9 Months Ended
	Sep. 30, 2014
Components of Deposits	'
	The following table details the components of deposits:
	(dollars in thousands)	September 30,		December 31,
		2014		2013
	Savings accounts	$	142,364	$	135,240
	Interest-bearing checking accounts		256,890		266,787
	Market-rate accounts		550,238		544,310
	Wholesale non-maturity deposits		41,290		42,936
	Wholesale time deposits		60,171		34,640
	Time deposits		121,158		140,794
	Total interest-bearing deposits		1,172,111		1,164,707
	Non-interest-bearing deposits		438,221		426,640
	Total deposits	$	1,610,332	$	1,591,347

Borrowings_Tables

Borrowings (Tables)	9 Months Ended
	Sep. 30, 2014
Summary of Short-Term Borrowings	'
	A summary of short-term borrowings is as follows:
	(dollars in thousands)		September 30,			December 31,
			2014			2013
	Overnight fed funds*		$	—		$	—
	Revolving line of credit*			—			—
	Short-term FHLB advances*			—			—
	Repurchase agreements			13,980			10,891
	Total short-term borrowings		$	13,980		$	10,891
	*	Although period-end balance is zero, these borrowing types may contribute to the average balance in the table below.
Information Concerning Short-Term Borrowings	'
	The following table sets forth information concerning short-term borrowings:
	(dollars in thousands)		Three Months Ended						Nine Months Ended
			September 30,						September 30,
			2014			2013			2014			2013
	Balance at period-end		$	13,980		$	75,588		$	13,980		$	75,588
	Maximum amount outstanding at any month-end			28,017			75,588			28,017			75,588
	Average balance outstanding during the period			14,074			14,995			14,798			13,455
	Weighted-average interest rate:
	As of period-end			0.1	%		0.33	%		0.1	%		0.33	%
	Paid during the period			0.1	%		0.13	%		0.11	%		0.13	%
Maturity of Long-Term FHLB Advances and Other Borrowings	'
	The following table presents the remaining periods until maturity of the long-term FHLB advances and other borrowings:
	(dollars in thousands)		September 30,			December 31,
			2014			2013
	Within one year		$	25,932		$	3,917
	Over one year through five years			199,642			196,727
	Over five years through ten years			5,000			5,000
	Total		$	230,574		$	205,644
Rate and Maturity Information on Long-Term Federal Home Loan Bank Advance and Other Borrowings	'
	The following table presents rate and maturity information on long-term FHLB advances and other borrowings:
	(dollars in thousands)		Maturity Range(1)			Weighted			Coupon Rate						Balance
	Description		From		To	Average			From			To			September 30,		December 31,
						Rate									2014		2013
	Fixed amortizing		4/9/15		4/9/15		3.57	%		3.57	%		3.57	%	$	932	$	2,102
	Adjustable amortizing(2)		N/A		N/A		3.25	%		3.25	%		3.25	%		—		7,050
	Bullet maturity – fixed rate		3/23/15		5/20/20		1.41	%		0.58	%		2.41	%		163,240		140,000
	Bullet maturity – variable rate		6/25/15		11/28/17		0.4	%		0.25	%		0.54	%		45,000		35,000
	Convertible-fixed(3)		1/3/18		8/20/18		2.95	%		2.58	%		3.5	%		21,402		21,492
	Total														$	230,574	$	205,644
	(1)	Maturity range refers to September 30, 2014 balances.
	(2)	Loan from correspondent bank other than FHLB.
	(3)	FHLB advances whereby the FHLB has the option, at predetermined times, to convert the fixed interest rate to an adjustable interest rate indexed to the London Interbank Offered Rate (“LIBOR”). The Corporation has the option to prepay these advances, without penalty, if the FHLB elects to convert the interest rate to an adjustable rate. As of September 30, 2014, substantially all the FHLB advances with this convertible feature are subject to conversion in fiscal 2014. These advances are included in the maturity ranges in which they mature, rather than the period in which they are subject to conversion.

Derivatives_and_Hedging_Activi1

Derivatives and Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2014

Derivatives and Hedging Activities

'

The following table details the Corporation’s derivative positions as of the balance sheet dates indicated:

As of September 30, 2014:

(dollars in thousands)

Current

Fair Value  of

Projected

Asset

Notional

Trade Date

Effective

Maturity

Receive (Variable)

Receive  Rate

Pay Fixed

(Liability)

Amount

Date

Date

Index

Swap Rate

$

15,000

12/13/12

11/30/15

11/28/22

US 3-Month LIBOR

2.773

%

2.376

%

$

408

As of December 31, 2013:

(dollars in thousands)

Current

Fair Value  of

Projected

Asset

Notional

Trade Date

Effective

Maturity

Receive (Variable)

Receive  Rate

Pay Fixed

(Liability)

Amount

Date

Date

Index

Swap Rate

$

15,000

12/13/12

11/30/15

11/28/22

US 3-Month LIBOR

3.597

%

2.376

%

$

1,142

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Schedule of Information about Options Outstanding	'
	The following table provides information about options outstanding for the three months ended September 30, 2014:
		Shares			Weighted		Weighted
					Average		Average Grant
					Exercise Price		Date Fair
							Value
	Options outstanding, June 30, 2014		521,886		$	20.84	$	4.73
	Granted		—		$	—	$	—
	Forfeited		—		$	—	$	—
	Expired		(750	)	$	21.21	$	4.86
	Exercised		(33,460	)	$	20.41	$	4.57
	Options outstanding, September 30, 2014		487,676		$	20.87	$	4.74
	The following table provides information about options outstanding for the nine months ended September 30, 2014:
		Shares			Weighted		Weighted
					Average		Average Grant
					Exercise Price		Date Fair
							Value
	Options outstanding, December 31, 2013		591,086		$	20.73	$	4.7
	Granted		—		$	—	$	—
	Forfeited		—		$	—	$	—
	Expired		(750	)	$	21.21	$	4.86
	Exercised		(102,660	)	$	20.07	$	4.48
	Options outstanding, September 30, 2014		487,676		$	20.87	$	4.74
Schedule of Information about Unvested Options	'
	The following table provides information about unvested options for the three months ended September 30, 2014:
		Shares			Weighted		Weighted
					Average		Average Grant
					Exercise Price		Date Fair
							Value
	Unvested options, June 30, 2014		30,146		$	18.27	$	4.42
	Granted		—		$	—	$	—
	Vested		(30,146	)	$	18.27	$	4.42
	Forfeited		—		$	—	$	—
	Unvested options, September 30, 2014		—		$	—	$	—
	The following table provides information about unvested options for the nine months ended September 30, 2014:
		Shares			Weighted		Weighted
					Average		Average Grant
					Exercise Price		Date Fair
							Value
	Unvested options, December 31, 2013		30,146		$	18.27	$	4.42
	Granted		—		$	—	$	—
	Vested		(30,146	)	$	18.27	$	4.42
	Forfeited		—		$	—	$	—
	Unvested options, September 30, 2014		—		$	—	$	—
Schedule of Related Tax Benefits Realized from Options Exercised and Intrinsic Value of Options Exercised	'
	Proceeds, related tax benefits realized from options exercised and intrinsic value of options exercised during the three and nine months ended September 30, 2014 and 2013 are detailed below:
		Three Months Ended September 30,					Nine Months Ended September 30,
	(dollars in thousands)	2014			2013		2014			2013
	Proceeds from exercise of stock options	$	683		$	810	$	2,061		$	2,550
	Related tax benefit recognized		82			75		256			231
	Net proceeds of options exercised	$	765		$	885	$	2,317		$	2,781
	Intrinsic value of options exercised	$	309		$	215	$	886		$	661
Schedule of Information about Options Outstanding and Exercisable	'
	The following table provides information about options outstanding and exercisable at September 30, 2014:
	(dollars in thousands, except exercise price)	Outstanding			Exercisable
	Number of shares		487,676			487,676
	Weighted average exercise price	$	20.87		$	20.87
	Aggregate intrinsic value	$	3,636		$	3,636
	Weighted average contractual term in years		2.8			2.8
Schedule of Unvested Restricted Stock Awards and Restricted Stock Units	'
	The following table details the unvested RSAs and RSUs for the three and nine months ended September 30, 2014:
		Three Months Ended					Nine Months Ended
		September 30, 2014					September 30, 2014
		Number of			Weighted		Number of			Weighted
		Shares			Average		Shares			Average  Grant
					Grant Date					Date Fair Value
					Fair Value
	Beginning balance		35,365		$	19.85		54,156		$	19.36
	Granted		16,456			28.88		16,456			28.88
	Vested		(2,980	)		16.78		(21,771	)		18.21
	Forfeited		(2,560	)		21.48		(2,560	)		21.48
	Ending balance		46,281		$	23.17		46,281		$	23.17
Schedule of Unvested Performance Stock Awards and Performance Stock Units	'
	The following table details the unvested PSAs and PSUs for the three and nine months ended September 30, 2014:
		Three Months Ended					Nine Months Ended
		September 30, 2014					September 30, 2014
		Number of			Weighted		Number of			Weighted
		Shares			Average		Shares			Average Grant
					Grant Date					Date Fair Value
					Fair Value
	Beginning balance		203,980		$	11.9		204,980		$	11.9
	Granted		71,184			15.05		71,184			15.05
	Vested		(56,946	)		10.07		(56,946	)		10.07
	Forfeited		(900	)		12.59		(1,900	)		12.32
	Ending balance		217,318		$	13.41		217,318		$	13.41

Pension_and_Other_PostRetireme1

Pension and Other Post-Retirement Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2014
Components of Net Periodic Benefits Cost (Benefit)	'
	The following tables provide details of the components of the net periodic benefits cost (benefit) for the three and nine months ended September 30, 2014 and 2013:
		Three Months Ended September 30,
		SERP I and SERP II					QDBP						PRBP
	(dollars in thousands)	2014		2013			2014			2013			2014		2013
	Service cost	$	19	$	18		$	—		$	—		$	—	$	—
	Interest cost		46		40			411			371			8		8
	Expected return on plan assets		—		—			(837	)		(745	)		—		—
	Amortization of transition obligation		—		—			—			—			—		—
	Amortization of prior service costs		3		3			—			—			—		—
	Amortization of net loss		10		13			97			431			14		19
	Gain on curtailment		—		—			—			—			—		—
	Net periodic benefit cost	$	78	$	74		$	(329	)	$	57		$	22	$	27
		Nine Months Ended September 30,
		SERP I and SERP II					QDBP						PRBP
	(dollars in thousands)	2014		2013			2014			2013			2014		2013
	Service cost	$	55	$	54		$	—		$	—		$	—	$	—
	Interest cost		137		119			1,231			1,114			22		22
	Expected return on plan assets		—		—			(2,511	)		(2,236	)		—		—
	Amortization of transition obligation		—		—			—			—			—		—
	Amortization of prior service costs		10		10			—			—			—		—
	Amortization of net loss		32		39			293			1,293			44		58
	Gain on curtailment		—		(690	)		—			—			—		—
	Net periodic benefit cost	$	234	$	(468	)	$	(987	)	$	171		$	66	$	80

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2014
Schedule of Detail Segment Information	'
	The following tables detail segment information for the three and nine months ended September 30, 2014 and 2013:
			Three Months Ended September 30, 2014									Three Months Ended September 30, 2013
	(dollars in thousands)		Banking			Wealth Management			Consolidated			Banking			Wealth Management			Consolidated
	Net interest income		$	19,175		$	1		$	19,176		$	18,532		$	1		$	18,533
	Less: loan loss provision			550			—			550			959			—			959
	Net interest income after loan loss provision			18,625			1			18,626			17,573			1			17,574
	Other income:
	Fees for wealth management services			—			9,099			9,099			—			8,635			8,635
	Service charges on deposit accounts			663			—			663			627			—			627
	Loan servicing and other fees			431			—			431			481			—			481
	Net gain on sale of loans			440			—			440			578			—			578
	Net gain on sale of available for sale securities			—			—			—			—			—			—
	Net loss on sale of other real estate owned			(49	)		—			(49	)		(1	)		—			(1	)
	BOLI income			76			—			76			72			—			72
	Other operating income			873			10			883			947			48			995
	Total other income			2,434			9,109			11,543			2,704			8,683			11,387
	Other expenses:
	Salaries & wages			6,179			2,931			9,110			5,986			3,026			9,012
	Employee benefits			945			707			1,652			1,196			700			1,896
	Occupancy & equipment			1,507			374			1,881			1,267			379			1,646
	Amortization of intangible assets			68			565			633			78			580			658
	Professional fees			694			7			701			609			27			636
	Other operating expenses			5,160			824			5,984			4,812			663			5,475
	Total other expenses			14,553			5,408			19,961			13,948			5,375			19,323
	Segment profit			6,506			3,702			10,208			6,329			3,309			9,638
	Intersegment (revenues) expenses*			(93	)		93			—			(19	)		19			—
	Pre-tax segment profit after eliminations		$	6,413		$	3,795		$	10,208		$	6,310		$	3,328		$	9,638
	% of segment pre-tax profit after eliminations			62.8	%		37.2	%		100	%		65.5	%		34.5	%		100	%
	Segment assets (dollars in millions)		$	2,084		$	40		$	2,124		$	2,017		$	42		$	2,059
	*	Inter-segment revenues consist of rental payments, interest on deposits and management fees.
			Nine Months Ended September 30, 2014									Nine Months Ended September 30, 2013
	(dollars in thousands)		Banking			Wealth Management			Consolidated			Banking			Wealth Management			Consolidated
	Net interest income		$	57,339		$	2		$	57,341		$	53,863		$	2		$	53,865
	Less: loan loss provision			1,200			—			1,200			2,763			—			2,763
	Net interest income after loan loss provision			56,139			2			56,141			51,100			2			51,102
	Other income:
	Fees for wealth management services			—			27,511			27,511			—			26,078			26,078
	Service charges on deposit accounts			1,920			—			1,920			1,807			—			1,807
	Loan servicing and other fees			1,305			—			1,305			1,380			—			1,380
	Net gain on sale of loans			1,301			—			1,301			3,588			—			3,588
	Net gain on sale of available for sale securities			81			—			81			2			—			2
	Net loss on sale of other real estate owned			171			—			171			(194	)		—			(194	)
	BOLI income			231			—			231			270			—			270
	Other operating income			2,838			81			2,919			3,051			138			3,189
	Total other income			7,847			27,592			35,439			9,904			26,216			36,120
	Other expenses:
	Salaries & wages			18,185			9,059			27,244			17,898			9,010			26,908
	Employee benefits			3,213			2,227			5,440			4,235			2,198			6,433
	Occupancy & equipment			4,389			1,108			5,497			3,994			1,130			5,124
	Amortization of intangible assets			210			1,696			1,906			237			1,741			1,978
	Professional fees			2,144			64			2,208			1,732			143			1,875
	Other operating expenses			14,696			2,495			17,191			15,082			2,682			17,764
	Total other expenses			42,837			16,649			59,486			43,178			16,904			60,082
	Segment profit			21,149			10,945			32,094			17,826			9,314			27,140
	Intersegment (revenues) expenses*			(279	)		279			—			(323	)		323			—
	Pre-tax segment profit after eliminations		$	20,870		$	11,224		$	32,094		$	17,503		$	9,637		$	27,140
	% of segment pre-tax profit after eliminations			65	%		35	%		100	%		64.5	%		35.5	%		100	%
	Segment assets (dollars in millions)		$	2,084		$	40		$	2,124		$	2,017		$	42		$	2,059
	*	Inter-segment revenues consist of rental payments, interest on deposits and management fees.
Wealth Management	'
Schedule of Detail Segment Information	'
	Other segment information is as follows:
	Wealth Management Segment Information
			(dollars in millions)
			September 30,			December 31, 2013
			2014
	Assets under management, administration, supervision and brokerage:		$	7,580.80		$	7,268.30

Mortgage_Servicing_Rights_Tabl

Mortgage Servicing Rights (Tables)	9 Months Ended
	Sep. 30, 2014
Summarized Corporation's Activity Related to MSRs	'
	The following tables summarize the Corporation’s activity related to mortgage servicing rights (“MSRs”) for the three and nine months ended September 30, 2014 and 2013:
			Three Months Ended September 30,
	(dollars in thousands)		2014			2013
	Balance, beginning of period		$	4,760		$	4,790
	Additions			161			174
	Amortization			(128	)		(187	)
	Recovery			3			—
	Impairment			—			(33	)
	Balance, end of period		$	4,796		$	4,744
	Fair value		$	5,719		$	5,622
	Residential mortgage loans serviced for others, end of period		$	594,156		$	616,636
			Nine Months Ended September 30,
	(dollars in thousands)		2014			2013
	Balance, beginning of period		$	4,750		$	4,491
	Additions			403			883
	Amortization			(371	)		(617	)
	Recovery			14			91
	Impairment			—			(104	)
	Balance, end of period		$	4,796		$	4,744
	Fair value		$	5,719		$	5,622
	Residential mortgage loans serviced for others, end of period		$	594,156		$	616,636
Other MSR Information	'
	As of September 30, 2014 and December 31, 2013, key economic assumptions and the sensitivity of the current fair value of MSRs to immediate 10 and 20 percent adverse changes in those assumptions are as follows:
	(dollars in thousands)		September 30, 2014			December 31, 2013
	Fair value amount of MSRs		$	5,719		$	5,733
	Weighted average life (in years)			6.45			6.3
	Prepayment speeds (constant prepayment rate)*			9.9			11.1
	Impact on fair value:
	10% adverse change		$	(175	)	$	(206	)
	20% adverse change		$	(345	)	$	(402	)
	Discount rate			10.5	%		10.5	%
	Impact on fair value:
	10% adverse change		$	(228	)	$	(231	)
	20% adverse change		$	(439	)	$	(445	)
	*	Represents the weighted average prepayment rate for the life of the MSR asset.

Goodwill_and_Other_Intangibles1

Goodwill and Other Intangibles (Tables)	9 Months Ended
	Sep. 30, 2014
Schedule of Goodwill and Intangible Assets Related to Acquisitions	'
	The Corporation’s goodwill and intangible assets related to the acquisitions of Lau Associates LLC (“Lau”) in July, 2008, First Keystone Financial, Inc. (“FKF”) in July, 2010, the Private Wealth Management Group of the Hershey Trust Company (“PWMG”) in May, 2011, and Davidson Trust Company (“DTC”) in May, 2012, and the First Bank of Delaware (“FBD”) transaction in November, 2012 are detailed below:
	(dollars in thousands)	Balance		Additions/		Amortization			Balance		Amortization
		December 31,		Adjustments					September  30,		Period
		2013							2014
	Goodwill – Wealth segment	$	20,412	$	—	$	—		$	20,412	Indefinite
	Goodwill – Banking segment		12,431		—		—			12,431	Indefinite
	Total	$	32,843	$	—	$	—		$	32,843
	Core deposit intangible	$	1,342	$	—	$	(210	)	$	1,132	10 Years
	Customer relationships		13,595		—		(926	)		12,669	10 to 20 Years
	Non-compete agreements		3,218		—		(770	)		2,448	5 to 5 1/2 Years
	Trade name		1,210		—		—			1,210	Indefinite
	Total	$	19,365	$	—	$	(1,906	)	$	17,459
	Grand total	$	52,208	$	—	$	(1,906	)	$	50,302

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2014
Components of Accumulated Other Comprehensive (Loss) Income	'
	The following tables detail the components of accumulated other comprehensive (loss) income for the three and nine month periods ended September 30, 2014 and 2013:
	(dollars in thousands)		Net Change in			Net Change in			Net Change in			Accumulated
			Unrealized Gains			Fair Value of			Unfunded			Other
			on Available-for-			Derivative			Pension			Comprehensive
			Sale  Investment			Used for Cash			Liability			Loss
			Securities			Flow  Hedge
	Balance, June 30, 2014		$	1,536			274			(5,358	)		(3,548	)
	Net change			(421	)		(8	)		46			(383	)
	Balance, September 30, 2014		$	1,115			266			(5,312	)		(3,931	)
	Balance, June 30, 2013		$	(123	)	$	577		$	(11,559	)	$	(11,105	)
	Net change			50			—			246			296
	Balance, September 30, 2013		$	(73	)	$	577		$	(11,313	)	$	(10,809	)
	(dollars in thousands)		Net Change in			Net Change in			Net Change in			Accumulated
			Unrealized Gains			Fair Value of			Unfunded			Other
			on Available-for-			Derivative			Pension			Comprehensive
			Sale Investment			Used for Cash			Liability			Loss
			Securities			Flow Hedge
	Balance, December 31, 2013		$	(857	)	$	743		$	(5,451	)	$	(5,565	)
	Net change			1,972			(477	)		139			1,634
	Balance, September 30, 2014		$	1,115			266			(5,312	)		(3,931	)
	Balance, December 31, 2012		$	3,164		$	(24	)	$	(13,218	)	$	(10,078	)
	Net change			(3,237	)		601			1,905			(731	)
	Balance, September 30, 2013		$	(73	)	$	577		$	(11,313	)	$	(10,809	)
Amounts Reclassified from Each Component of Accumulated Other Comprehensive Loss	'
	The following tables detail the amounts reclassified from each component of accumulated other comprehensive loss to each component’s applicable income statement line, for the three and nine month periods ended September 30, 2014 and 2013:
	Description of Accumulated Other Comprehensive		Amount Reclassified from Accumulated						Affected Income Statement Category
	Loss Component		Other Comprehensive Loss
			For The Three Months Ended
			September 30,
			2014			2013
	Net unrealized gain on investment securities available for sale:
	Realization of gain on sale of investment securities available for sale		$	—		$	—		Net gain on sale of available for sale investment securities
				—			—		Less: income tax expense
			$	—		$	—		Net of income tax
	Unfunded pension liability:
	Amortization of net loss included in net periodic pension costs*		$	121		$	463		Employee benefits
	Amortization of prior service cost included in net periodic pension costs*			3			3		Employee benefits
	Amortization of transition obligation included in net periodic pension costs*			—			—		Employee benefits
	Gain on curtailment of SERP II			—			—		Net gain on curtailment of nonqualified pension plan
				124			466		Total expense before income tax benefit
				43			163		Less: income tax benefit
			$	81		$	303		Net of income tax
	Description of Accumulated Other Comprehensive		Amount Reclassified from Accumulated						Affected Income Statement Category
	Loss Component		Other Comprehensive Loss
			For The Nine Months Ended
			September 30,
			2014			2013
	Net unrealized gain on investment securities available for sale:
	Realization of gain on sale of investment securities available for sale		$	(81	)	$	(2	)	Net gain on sale of available for sale investment securities
				(28	)		(1	)	Less: income tax expense
			$	(53	)	$	(1	)	Net of income tax
	Unfunded pension liability:
	Amortization of net loss included in net periodic pension costs*		$	369		$	1,390		Employee benefits
	Amortization of prior service cost included in net periodic pension costs*			10			10		Employee benefits
	Amortization of transition obligation included in net periodic pension costs*			—			—		Employee benefits
	Gain on curtailment of SERP II			—			(690	)	Net gain on curtailment of nonqualified pension plan
				379			710		Total expense before income tax benefit
				133			249		Less: income tax benefit
			$	246		$	461		Net of income tax
	*	Accumulated other comprehensive loss components are included in the computation of net periodic pension cost. See Note 9 - Pension and Other Post-Retirement Benefit Plans

Fair_Value_Measurement_Tables

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2014
Summary of Fair Value of Assets Measured on a Recurring and Non-Recurring Basis	'
	The following table sets forth the fair value of assets measured on a recurring and non-recurring basis as of September 30, 2014:
	(dollars in millions)	Total		Level 1		Level 2		Level 3
	Assets Measured at Fair Value on a Recurring Basis:
	Investment securities (available for sale and trading):
	U.S. Treasury securities	$	0.1	$	0.1	$	—	$	—
	Obligations of the U.S. government agency securities		71.1		—		71.1		—
	Obligations of state & political subdivisions		33.7		—		33.7		—
	Mortgage-backed securities		106.2		—		106.2		—
	Collateralized mortgage obligations		37.1		—		37.1		—
	Mutual funds		15.8		15.8		—		—
	Other debt securities		1.9		—		1.9		—
	Derivatives		0.4		—		0.4		—
	Total assets measured on a recurring basis at fair value	$	266.3	$	15.9	$	250.4	$	—
	Assets Measured at Fair Value on a Non-Recurring Basis
	Mortgage servicing rights	$	5.7	$	—	$	—	$	5.7
	Impaired loans and leases		13.5		—		—		13.5
	Other real estate owned (“OREO”)		0.9		—		—		0.9
	Total assets measured on a non-recurring basis at fair value	$	20.1	$	—	$	—	$	20.1
	The following table sets forth the fair value of assets measured on a recurring and non-recurring basis as of December 31, 2013:
	(dollars in millions)	Total		Level 1		Level 2		Level 3
	Assets Measured at Fair Value on a Recurring Basis:
	Investment securities (available for sale and trading):
	U.S. Treasury securities	$	0.1	$	0.1	$	—	$	—
	Obligations of the U.S. government agency securities		69.5		—		69.5		—
	Obligations of state & political subdivisions		37		—		37		—
	Mortgage-backed securities		119.4		—		119.4		—
	Collateralized mortgage obligations		44.2		—		44.2		—
	Mutual funds		17.1		17.1		—		—
	Other debt securities		1.9		—		1.9		—
	Derivatives		1.1		—		1.1		—
	Total assets measured on a recurring basis at fair value	$	290.3	$	17.2	$	273.1	$	—
	Assets Measured at Fair Value on a Non-Recurring Basis
	Mortgage servicing rights	$	4.9	$	—	$	—	$	4.9
	Impaired loans and leases		16.1		—		—		16.1
	OREO		0.9		—		—		0.9
	Total assets measured on a non-recurring basis at fair value	$	21.9	$	—	$	—	$	21.9

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Carrying Value and Estimated Fair Value of Financial Instruments	'
	As of the dates indicated, the carrying amount and estimated fair value of the Corporation’s financial instruments are as follows:
				As of September 30,				As of December 31
				2014				2013
	(dollars in thousands)		Fair Value	Carrying		Estimated		Carrying		Estimated
			Hierarchy Level*	Amount		Fair Value		Amount		Fair Value
	Financial assets:
	Cash and cash equivalents		Level 1	$	67,565	$	67,565	$	81,071	$	81,071
	Investment securities, available for sale		See Note 16		265,939		265,939		285,808		285,808
	Investment securities, trading		Level 2		3,803		3,803		3,437		3,437
	Loans held for sale		Level 2		1,375		1,375		1,350		1,350
	Net portfolio loans and leases		Level 3		1,629,639		1,641,873		1,531,670		1,534,631
	Mortgage servicing rights		Level 3		4,796		5,719		4,750		5,733
	Other assets		See Note 16**		23,142		23,142		21,819		21,819
	Total financial assets			$	1,996,259	$	2,009,416	$	1,929,905	$	1,933,849
	Financial liabilities:
	Deposits		Level 2	$	1,610,332	$	1,609,694	$	1,591,347	$	1,591,215
	Short-term borrowings		Level 2		13,980		13,980		10,891		10,891
	Long-term FHLB advances and other borrowings		Level 2		230,574		229,924		205,644		205,149
	Other liabilities		Level 2		21,387		21,387		23,885		23,885
	Total financial liabilities			$	1,876,273	$	1,874,985	$	1,831,767	$	1,831,140
	*	See Note 16 for a description of fair value hierarchy levels.
	**	Included in Other Assets as of September 30, 2014 and December 31, 2013 was $0.4 million and $1.1 million, respectively, of derivatives whose fair value was determined using Level 2 inputs.

Calculation_of_Basic_and_Dilut

Calculation of Basic and Diluted Earnings per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Line Items]	'	'	'	'
Numerator: Net income available to common shareholders	$6,506	$6,401	$20,799	$17,973
Denominator for basic earnings per share - weighted average shares outstanding	13,600,348	13,336,799	13,539,327	13,274,801
Effect of dilutive common shares	272,516	275,343	294,114	244,302
Denominator for diluted earnings per share - adjusted weighted average shares outstanding	13,872,864	13,612,142	13,833,441	13,519,103
Basic earnings per share	$0.48	$0.48	$1.54	$1.35
Diluted earnings per share	$0.47	$0.47	$1.50	$1.33
Antidilutive shares excluded from computation of average dilutive earnings per share	'	'	'	123,882

Amortized_Cost_and_Estimated_F

Amortized Cost and Estimated Fair Value of Available for Sale Investment Securities (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	$264,224	$287,127
Gross Unrealized Gains	2,800	2,256
Gross Unrealized Losses	-1,085	-3,575
Fair Value	265,939	285,808
Obligations of U.S. government agency securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	71,443	71,097
Gross Unrealized Gains	152	149
Gross Unrealized Losses	-485	-1,678
Fair Value	71,110	69,568
Obligations of state and political subdivisions	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	33,555	37,140
Gross Unrealized Gains	188	141
Gross Unrealized Losses	-48	-304
Fair Value	33,695	36,977
Mortgage-backed securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	104,670	119,044
Gross Unrealized Gains	1,815	1,392
Gross Unrealized Losses	-262	-1,073
Fair Value	106,223	119,363
Collateralized mortgage obligations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	37,071	44,463
Gross Unrealized Gains	316	273
Gross Unrealized Losses	-277	-493
Fair Value	37,110	44,243
Other investments	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	17,383	15,281
Gross Unrealized Gains	329	301
Gross Unrealized Losses	-11	-24
Fair Value	17,701	15,558
U.S. Treasury securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	102	102
Gross Unrealized Losses	-2	-3
Fair Value	$100	$99

Amount_of_Investment_Securitie

Amount of Investment Securities Available for Sale in Unrealized Loss Position (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	$52,717	$137,881
Less than 12 Months Unrealized Losses	-171	-3,116
12 Months or Longer Fair Value	51,158	12,619
12 Months or Longer Unrealized Losses	-914	-459
Total Fair Value	103,875	150,500
Total Unrealized Losses	-1,085	-3,575
Obligations of U.S. government agency securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	25,963	41,201
Less than 12 Months Unrealized Losses	-37	-1,391
12 Months or Longer Fair Value	22,550	5,774
12 Months or Longer Unrealized Losses	-448	-287
Total Fair Value	48,513	46,975
Total Unrealized Losses	-485	-1,678
Obligations of state and political subdivisions	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	2,070	13,020
Less than 12 Months Unrealized Losses	-7	-233
12 Months or Longer Fair Value	4,651	4,543
12 Months or Longer Unrealized Losses	-41	-71
Total Fair Value	6,721	17,563
Total Unrealized Losses	-48	-304
Mortgage-backed securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	15,848	55,672
Less than 12 Months Unrealized Losses	-58	-972
12 Months or Longer Fair Value	14,592	2,302
12 Months or Longer Unrealized Losses	-204	-101
Total Fair Value	30,440	57,974
Total Unrealized Losses	-262	-1,073
Collateralized mortgage obligations	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	8,067	26,395
Less than 12 Months Unrealized Losses	-58	-493
12 Months or Longer Fair Value	9,265	'
12 Months or Longer Unrealized Losses	-219	'
Total Fair Value	17,332	26,395
Total Unrealized Losses	-277	-493
U.S. Treasury securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	'	99
Less than 12 Months Unrealized Losses	'	-3
12 Months or Longer Fair Value	100	'
12 Months or Longer Unrealized Losses	-2	'
Total Fair Value	100	99
Total Unrealized Losses	-2	-3
Other investments	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months Fair Value	769	1,494
Less than 12 Months Unrealized Losses	-11	-24
Total Fair Value	769	1,494
Total Unrealized Losses	($11)	($24)

Investment_Securities_Addition

Investment Securities - Additional Information (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Securities pledged as collateral	$88.20	$94.90

Amortized_Cost_and_Fair_Value_

Amortized Cost and Fair Value of Available for Sale Investment Securities (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'		'
Due in one year or less, Amortized Cost	$15,719	[1]	$7,859	[1]
Due after one year through five years, Amortized Cost	64,780	[1]	49,790	[1]
Due after five years through ten years, Amortized Cost	26,501	[1]	51,793	[1]
Due after ten years, Amortized Cost	'		797	[1]
Subtotal	107,000	[1]	110,239	[1]
Mortgage-related securities, Amortized Cost	141,741	[2]	163,507	[2]
Total	248,741	[1]	273,746	[1]
Due in one year or less, Fair Value	15,752	[1]	7,869	[1]
Due after one year through five years, Fair Value	64,833	[1]	49,721	[1]
Due after five years through ten years, Fair Value	26,220	[1]	50,117	[1]
Due after ten years, Fair Value	'		824	[1]
Subtotal	106,805	[1]	108,531	[1]
Mortgage-related securities, Fair Value	143,333	[2]	163,606	[2]
Total	$250,138	[1]	$272,137	[1]
[1]	Included in the investment portfolio, but not in the table above, are mutual funds with a fair value, as of September 30, 2014 and December 31, 2013, of $15.8 million and $13.7 million, respectively, which have no stated maturity.
[2]	Expected maturities of mortgage-related securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

Amortized_Cost_and_Fair_Value_1

Amortized Cost and Fair Value of Available for Sale Investment Securities (Parenthetical) (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'		'
Investment securities without maturity	$141,741	[1]	$163,507	[1]
Mutual funds	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Investment securities without maturity	$15,800		$13,700
[1]	Expected maturities of mortgage-related securities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

Loans_and_Leases_Outstanding_D

Loans and Leases Outstanding (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Loans held for sale	$1,375	$1,350
Real estate loans	1,240,922	1,161,524
Commercial and industrial	342,524	328,459
Consumer	16,810	16,926
Leases	44,982	40,276
Total	1,645,238	1,547,185
Total loans and leases	1,646,613	1,548,535
Loans with fixed rates	905,050	850,168
Loans with adjustable or floating rates	741,563	698,367
Total loans and leases	1,646,613	1,548,535
Net deferred loan origination costs included in the above loan table	176	222
Commercial mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Real estate loans	683,558	625,341
Total	683,558	625,341
Home equity lines and loans	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Real estate loans	183,314	189,571
Total	183,314	189,571
Residential mortgage	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Real estate loans	314,127	300,243
Total	314,127	300,243
Construction	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Real estate loans	59,923	46,369
Total	$59,923	$46,369

Components_of_Net_Investments_

Components of Net Investments in Leases (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Minimum lease payments receivable	$51,089	$45,866
Unearned lease income	-8,281	-7,534
Initial direct costs and deferred fees	2,174	1,944
Total	$44,982	$40,276

NonPerforming_Loans_and_Leases

Non-Performing Loans and Leases (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Non-accrual loans and leases	$8,336	[1]	$10,530	[1]
Commercial mortgage	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Non-accrual loans and leases	709	[1]	478	[1]
Home equity lines and loans	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Non-accrual loans and leases	1,013	[1]	1,262	[1]
Residential mortgage	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Non-accrual loans and leases	3,751	[1]	4,377	[1]
Construction	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Non-accrual loans and leases	263	[1]	830	[1]
Commercial and industrial	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Non-accrual loans and leases	2,570	[1]	3,539	[1]
Consumer	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Non-accrual loans and leases	'		20	[1]
Leases	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Non-accrual loans and leases	$30	[1]	$24	[1]
[1]	Purchased credit-impaired loans, which have been recorded at their fair values at acquisition, and which are performing, are excluded from this table, with the exception of $63 thousand and $238 thousand of purchased credit-impaired loans as of September 30, 2014 and December 31, 2013, respectively, which became non-performing subsequent to acquisition.

NonPerforming_Loans_and_Leases1

Non-Performing Loans and Leases (Parenthetical) (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Purchased credit-impaired loans	$63	$238

Outstanding_Principal_Balance_

Outstanding Principal Balance and Related Carrying Amount of Credit-Impaired Loans (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]	'		'
Outstanding principal balance	$12,689		$14,293
Carrying amount	$9,045	[1]	$9,880	[1]
[1]	Includes $106 thousand and $293 thousand purchased credit-impaired loans as of September 30, 2014 and December 31, 2013, respectively, for which the Corporation could not estimate the timing or amount of expected cash flows to be collected at acquisition, and for which no accretable yield is recognized. Additionally, the table above includes $63 thousand and $238 thousand of purchased credit-impaired loans as of September 30, 2014 and December 31, 2013, respectively, which became non-performing subsequent to acquisition, which are disclosed in Note 4C, above, and which also have no accretable yield.

Outstanding_Principal_Balance_1

Outstanding Principal Balance and Related Carrying Amount of Credit-Impaired Loans (Parenthetical) (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]	'	'
Credit-impaired loans not expected to be collected at acquisition	$106	$293
Purchased credit-impaired loans	$63	$238

Schedule_of_Changes_in_Accreta

Schedule of Changes in Accretable Discount on Purchased Credit-Impaired Loans (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]	'
Beginning Balance	$6,134
Accretion	-1,219
Reclassifications from nonaccretable difference	930
Additions/adjustments	-123
Disposals	-2
Ending Balance	$5,720

Aging_of_Corporations_Loan_and

Aging of Corporation's Loan and Lease Portfolio (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
30 - 59 Days Past Due	$1,375		$1,619
60 - 89 Days Past Due	366		99
Over 89 Days Past Due	'		'
Total Past Due	1,741		1,718
Current	1,635,161		1,534,937
Total Accruing Loans and Leases	1,636,902		1,536,655
Non accrual Loans and Leases	8,336	[1]	10,530	[1]
Total	1,645,238		1,547,185
Commercial mortgage	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
30 - 59 Days Past Due	'		241
Over 89 Days Past Due	'		'
Total Past Due	'		241
Current	682,849		624,622
Total Accruing Loans and Leases	682,849		624,863
Non accrual Loans and Leases	709	[1]	478	[1]
Total	683,558		625,341
Home equity lines and loans	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
30 - 59 Days Past Due	443		209
60 - 89 Days Past Due	180		'
Over 89 Days Past Due	'		'
Total Past Due	623		209
Current	181,678		188,100
Total Accruing Loans and Leases	182,301		188,309
Non accrual Loans and Leases	1,013	[1]	1,262	[1]
Total	183,314		189,571
Residential mortgage	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
30 - 59 Days Past Due	896		773
60 - 89 Days Past Due	35		35
Over 89 Days Past Due	'		'
Total Past Due	931		808
Current	309,445		295,058
Total Accruing Loans and Leases	310,376		295,866
Non accrual Loans and Leases	3,751	[1]	4,377	[1]
Total	314,127		300,243
Construction	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
Over 89 Days Past Due	'		'
Current	59,660		45,539
Total Accruing Loans and Leases	59,660		45,539
Non accrual Loans and Leases	263	[1]	830	[1]
Total	59,923		46,369
Commercial and industrial	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
30 - 59 Days Past Due	34		334
60 - 89 Days Past Due	136		'
Over 89 Days Past Due	'		'
Total Past Due	170		334
Current	339,784		324,586
Total Accruing Loans and Leases	339,954		324,920
Non accrual Loans and Leases	2,570	[1]	3,539	[1]
Total	342,524		328,459
Consumer	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
30 - 59 Days Past Due	'		2
60 - 89 Days Past Due	'		4
Over 89 Days Past Due	'		'
Total Past Due	'		6
Current	16,810		16,900
Total Accruing Loans and Leases	16,810		16,906
Non accrual Loans and Leases	'		20	[1]
Total	16,810		16,926
Leases	'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'
30 - 59 Days Past Due	2		60
60 - 89 Days Past Due	15		60
Over 89 Days Past Due	'		'
Total Past Due	17		120
Current	44,935		40,132
Total Accruing Loans and Leases	44,952		40,252
Non accrual Loans and Leases	30	[1]	24	[1]
Total	$44,982		$40,276
[1]	Purchased credit-impaired loans, which have been recorded at their fair values at acquisition, and which are performing, are excluded from this table, with the exception of $63 thousand and $238 thousand of purchased credit-impaired loans as of September 30, 2014 and December 31, 2013, respectively, which became non-performing subsequent to acquisition.

Roll_forward_of_Corporations_A

Roll forward of Corporation's Allowance for Loan and Leases Losses by Loan Category (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	$15,470	$14,444	$15,515	$14,425
Charge-offs	-493	-501	-1,335	-2,495
Recoveries	72	125	219	334
Provision for loan and lease losses	550	959	1,200	2,763
Balance, end of period	15,599	15,027	15,599	15,027
Commercial mortgage	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	3,831	4,481	3,797	3,907
Charge-offs	-80	-19	-100	-19
Recoveries	'	'	1	'
Provision for loan and lease losses	169	20	222	594
Balance, end of period	3,920	4,482	3,920	4,482
Home equity lines and loans	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	2,594	2,109	2,204	1,857
Charge-offs	-95	-105	-538	-457
Recoveries	'	29	2	29
Provision for loan and lease losses	-340	153	491	757
Balance, end of period	2,159	2,186	2,159	2,186
Residential mortgage	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	2,387	1,773	2,446	2,024
Charge-offs	-11	-203	-28	-203
Recoveries	9	5	21	13
Provision for loan and lease losses	-136	523	-190	264
Balance, end of period	2,249	2,098	2,249	2,098
Construction	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	1,000	653	845	1,019
Charge-offs	'	'	'	-720
Recoveries	'	6	'	24
Provision for loan and lease losses	245	9	400	345
Balance, end of period	1,245	668	1,245	668
Commercial and industrial	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	4,658	4,295	5,011	4,637
Charge-offs	-19	-19	-188	-737
Recoveries	1	20	55	64
Provision for loan and lease losses	458	134	220	466
Balance, end of period	5,098	4,430	5,098	4,430
Consumer	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	261	218	259	189
Charge-offs	-42	-31	-113	-101
Recoveries	7	3	13	7
Provision for loan and lease losses	-43	68	24	163
Balance, end of period	183	258	183	258
Leases	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	441	551	604	493
Charge-offs	-246	-124	-368	-258
Recoveries	55	62	127	197
Provision for loan and lease losses	199	82	86	139
Balance, end of period	449	571	449	571
Unallocated	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	298	364	349	299
Provision for loan and lease losses	-2	-30	-53	35
Balance, end of period	$296	$334	$296	$334

Allocation_of_Allowance_for_Lo

Allocation of Allowance for Loan and Lease Losses by Portfolio Segment Based on Methodology Used to Evaluate Loans and Leases for Impairment (Detail) (USD $)	Sep. 30, 2014		Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'	'	'
Individually evaluated for impairment	$1,657		'	$1,519	'	'	'
Collectively evaluated for impairment	13,938		'	13,996	'	'	'
Purchased credit- impaired	4	[1]	'	'	'	'	'
Total	15,599		15,470	15,515	15,027	14,444	14,425
Commercial mortgage	'		'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'	'	'
Collectively evaluated for impairment	3,916		'	3,797	'	'	'
Purchased credit- impaired	4	[1]	'	'	'	'	'
Total	3,920		3,831	3,797	4,482	4,481	3,907
Home equity lines and loans	'		'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'	'	'
Individually evaluated for impairment	120		'	121	'	'	'
Collectively evaluated for impairment	2,039		'	2,083	'	'	'
Total	2,159		2,594	2,204	2,186	2,109	1,857
Residential mortgage	'		'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'	'	'
Individually evaluated for impairment	613		'	814	'	'	'
Collectively evaluated for impairment	1,636		'	1,632	'	'	'
Total	2,249		2,387	2,446	2,098	1,773	2,024
Construction	'		'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'	'	'
Collectively evaluated for impairment	1,245		'	845	'	'	'
Total	1,245		1,000	845	668	653	1,019
Commercial and industrial	'		'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'	'	'
Individually evaluated for impairment	892		'	532	'	'	'
Collectively evaluated for impairment	4,206		'	4,479	'	'	'
Total	5,098		4,658	5,011	4,430	4,295	4,637
Consumer	'		'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'	'	'
Individually evaluated for impairment	32		'	52	'	'	'
Collectively evaluated for impairment	151		'	207	'	'	'
Total	183		261	259	258	218	189
Leases	'		'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'	'	'
Collectively evaluated for impairment	449		'	604	'	'	'
Total	449		441	604	571	551	493
Unallocated	'		'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'	'	'	'	'
Collectively evaluated for impairment	296		'	349	'	'	'
Total	$296		$298	$349	$334	$364	$299
[1]	Purchased credit-impaired loans are evaluated for impairment on an individual basis.

Carrying_Value_for_Loans_and_L

Carrying Value for Loans and Leases by Portfolio Segment Based on Methodology Used to Evaluate Loans and Leases for Impairment (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Individually evaluated for impairment	$15,143		$17,506
Collectively evaluated for impairment	1,621,051		1,519,799
Purchased credit- impaired	9,044	[1]	9,880	[1]
Total	1,645,238		1,547,185
Commercial mortgage	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Individually evaluated for impairment	646		236
Collectively evaluated for impairment	674,272		616,077
Purchased credit- impaired	8,640	[1]	9,028	[1]
Total	683,558		625,341
Home equity lines and loans	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Individually evaluated for impairment	1,237		1,428
Collectively evaluated for impairment	182,064		188,128
Purchased credit- impaired	13	[1]	15	[1]
Total	183,314		189,571
Residential mortgage	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Individually evaluated for impairment	9,314		9,860
Collectively evaluated for impairment	304,784		290,345
Purchased credit- impaired	29	[1]	38	[1]
Total	314,127		300,243
Construction	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Individually evaluated for impairment	263		1,172
Collectively evaluated for impairment	59,615		44,715
Purchased credit- impaired	45	[1]	482	[1]
Total	59,923		46,369
Commercial and industrial	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Individually evaluated for impairment	3,650		4,758
Collectively evaluated for impairment	338,557		323,384
Purchased credit- impaired	317	[1]	317	[1]
Total	342,524		328,459
Consumer	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Individually evaluated for impairment	33		52
Collectively evaluated for impairment	16,777		16,874
Total	16,810		16,926
Leases	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Collectively evaluated for impairment	44,982		40,276
Total	$44,982		$40,276
[1]	Purchased credit-impaired loans are evaluated for impairment on an individual basis.

Carrying_Value_of_Loans_and_Le

Carrying Value of Loans and Leases by Portfolio Segment Based on Credit Quality Indicators used to Allocate Allowance for Loan and Lease Losses (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	$1,645,238	$1,547,185
Pass	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	1,071,949	984,250
Special Mention	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	6,194	3,180
Substandard	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	7,862	12,739
Pass, Special Mention and Substandard	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	1,086,005	1,000,169
Performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	554,439	541,333
Non-performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	4,794	5,683
Performing and Non-performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	559,233	547,016
Commercial mortgage	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	683,558	625,341
Commercial mortgage | Pass	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	677,136	620,227
Commercial mortgage | Special Mention	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	4,789	2,793
Commercial mortgage | Substandard	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	1,633	2,321
Commercial mortgage | Pass, Special Mention and Substandard	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	683,558	625,341
Construction	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	59,923	46,369
Construction | Pass	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	59,660	43,812
Construction | Substandard	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	263	2,557
Construction | Pass, Special Mention and Substandard	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	59,923	46,369
Commercial and industrial	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	342,524	328,459
Commercial and industrial | Pass	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	335,153	320,211
Commercial and industrial | Special Mention	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	1,405	387
Commercial and industrial | Substandard	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	5,966	7,861
Commercial and industrial | Pass, Special Mention and Substandard	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	342,524	328,459
Residential mortgage	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	314,127	300,243
Residential mortgage | Performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	310,376	295,866
Residential mortgage | Non-performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	3,751	4,377
Residential mortgage | Performing and Non-performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	314,127	300,243
Home equity lines and loans	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	183,314	189,571
Home equity lines and loans | Performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	182,301	188,309
Home equity lines and loans | Non-performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	1,013	1,262
Home equity lines and loans | Performing and Non-performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	183,314	189,571
Consumer	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	16,810	16,926
Consumer | Performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	16,810	16,906
Consumer | Non-performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	'	20
Consumer | Performing and Non-performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	16,810	16,926
Leases	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	44,982	40,276
Leases | Performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	44,952	40,252
Leases | Non-performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	30	24
Leases | Performing and Non-performing	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for loan and lease losses	$44,982	$40,276

Balance_of_Troubled_Debt_Restr

Balance of Troubled Debt Restructurings (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Modifications [Line Items]	'	'
TDRs included in nonperforming loans and leases	$1,725	$1,699
TDRs in compliance with modified terms	6,913	7,277
Total TDRs	$8,638	$8,976

Loan_and_Lease_Modifications_C

Loan and Lease Modifications Categorized as Troubled Debt Restructurings (Detail) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
	Contract	Contract
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	1	5
Pre-Modification Outstanding Recorded Investment	$79	$787
Post-Modification Outstanding Recorded Investment	79	798
Residential mortgage	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	1	3
Pre-Modification Outstanding Recorded Investment	79	471
Post-Modification Outstanding Recorded Investment	79	473
Home equity lines and loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	1
Pre-Modification Outstanding Recorded Investment	'	70
Post-Modification Outstanding Recorded Investment	'	70
Commercial and industrial	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	1
Pre-Modification Outstanding Recorded Investment	'	246
Post-Modification Outstanding Recorded Investment	'	$255

Types_of_Loan_and_Lease_Modifi

Types of Loan and Lease Modifications (Detail)	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
	Contract	Contract
Financing Receivable, Modifications [Line Items]	'	'
Interest Rate Change	'	'
Loan Term Extension	'	1
Interest Rate Change and Term Extension	1	4
Interest Rate Change and/or Interest-Only Period	'	'
Contractual Payment Reduction (Leases only)	'	'
Forgiveness of Interest	'	'
Residential mortgage	'	'
Financing Receivable, Modifications [Line Items]	'	'
Interest Rate Change	'	'
Interest Rate Change and Term Extension	1	3
Interest Rate Change and/or Interest-Only Period	'	'
Contractual Payment Reduction (Leases only)	'	'
Forgiveness of Interest	'	'
Home equity lines and loans	'	'
Financing Receivable, Modifications [Line Items]	'	'
Interest Rate Change	'	'
Loan Term Extension	'	1
Interest Rate Change and/or Interest-Only Period	'	'
Contractual Payment Reduction (Leases only)	'	'
Forgiveness of Interest	'	'
Commercial and industrial	'	'
Financing Receivable, Modifications [Line Items]	'	'
Interest Rate Change	'	'
Interest Rate Change and Term Extension	'	1
Interest Rate Change and/or Interest-Only Period	'	'
Contractual Payment Reduction (Leases only)	'	'
Forgiveness of Interest	'	'

Recorded_Investment_and_Princi

Recorded Investment and Principal Balance of Impaired Loans by Portfolio Segment Their Related Allowance for Loan and Lease Losses and Interest Income Recognized (Detail) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	$15,143	[1]	$19,408	[1]	$15,143	[1]	$19,408	[1]	$17,506	[1]
Principal Balance	16,736		20,950		16,736		20,950		19,140
Related Allowance	1,657		1,347		1,657		1,347		1,519
Average Principal Balance	17,516		21,327		17,633		21,275		'
Interest Income Recognized	84		110		288		210		'
Cash-Basis Interest Income Recognized	'		'		'		'		'
Impaired loans with related allowance	'		'		'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	8,083	[1]	7,660	[1]	8,083	[1]	7,660	[1]	8,611	[1]
Principal Balance	8,361		7,799		8,361		7,799		8,745
Related Allowance	1,657		1,347		1,657		1,347		1,519
Average Principal Balance	8,506		7,986		8,442		7,934		'
Interest Income Recognized	53		55		156		155		'
Cash-Basis Interest Income Recognized	'		'		'		'		'
Impaired loans with related allowance | Home equity lines and loans	'		'		'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	272	[1]	544	[1]	272	[1]	544	[1]	277	[1]
Principal Balance	360		589		360		589		279
Related Allowance	120		119		120		119		121
Average Principal Balance	360		619		359		617		'
Interest Income Recognized	'		5		6		15		'
Cash-Basis Interest Income Recognized	'		'		'		'		'
Impaired loans with related allowance | Residential mortgage	'		'		'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	4,766	[1]	4,448	[1]	4,766	[1]	4,448	[1]	5,297	[1]
Principal Balance	4,755		4,419		4,755		4,419		5,312
Related Allowance	613		628		613		628		814
Average Principal Balance	4,863		4,485		4,774		4,408		'
Interest Income Recognized	38		28		115		83		'
Cash-Basis Interest Income Recognized	'		'		'		'		'
Impaired loans with related allowance | Commercial and industrial	'		'		'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	3,012	[1]	2,586	[1]	3,012	[1]	2,586	[1]	2,985	[1]
Principal Balance	3,213		2,709		3,213		2,709		3,100
Related Allowance	892		544		892		544		532
Average Principal Balance	3,250		2,798		3,276		2,823		'
Interest Income Recognized	15		21		34		53		'
Cash-Basis Interest Income Recognized	'		'		'		'		'
Impaired loans with related allowance | Consumer	'		'		'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	33	[1]	82	[1]	33	[1]	82	[1]	52	[1]
Principal Balance	33		82		33		82		54
Related Allowance	32		56		32		56		52
Average Principal Balance	33		84		33		86		'
Interest Income Recognized	'		1		1		4		'
Cash-Basis Interest Income Recognized	'		'		'		'		'
Impaired loans without related allowance	'		'		'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	7,060	[1],[2],[3]	11,748	[1],[4],[5]	7,060	[1],[2],[3]	11,748	[1],[4],[5]	8,895	[1],[2],[6]
Principal Balance	8,375	[2],[3]	13,151	[4],[5]	8,375	[2],[3]	13,151	[4],[5]	10,395	[2],[6]
Average Principal Balance	9,010	[2],[3]	13,341	[4],[5]	9,191	[2],[3]	13,341	[4],[5]	'
Interest Income Recognized	31	[2],[3]	55	[4],[5]	132	[2],[3]	55	[4],[5]	'
Cash-Basis Interest Income Recognized	'	[2],[3]	'	[4],[5]	'	[2],[3]	'	[4],[5]	'
Impaired loans without related allowance | Home equity lines and loans	'		'		'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	965	[1],[2],[3]	1,523	[1],[4],[5]	965	[1],[2],[3]	1,523	[1],[4],[5]	1,151	[1],[2],[6]
Principal Balance	969	[2],[3]	1,532	[4],[5]	969	[2],[3]	1,532	[4],[5]	1,159	[2],[6]
Average Principal Balance	1,067	[2],[3]	1,631	[4],[5]	1,075	[2],[3]	1,631	[4],[5]	'
Interest Income Recognized	2	[2],[3]	2	[4],[5]	9	[2],[3]	2	[4],[5]	'
Cash-Basis Interest Income Recognized	'	[2],[3]	'	[4],[5]	'	[2],[3]	'	[4],[5]	'
Impaired loans without related allowance | Residential mortgage	'		'		'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	4,548	[1],[2],[3]	5,091	[1],[4],[5]	4,548	[1],[2],[3]	5,091	[1],[4],[5]	4,563	[1],[2],[6]
Principal Balance	4,873	[2],[3]	5,340	[4],[5]	4,873	[2],[3]	5,340	[4],[5]	4,911	[2],[6]
Average Principal Balance	5,253	[2],[3]	5,598	[4],[5]	5,235	[2],[3]	5,598	[4],[5]	'
Interest Income Recognized	29	[2],[3]	39	[4],[5]	103	[2],[3]	39	[4],[5]	'
Cash-Basis Interest Income Recognized	'	[2],[3]	'	[4],[5]	'	[2],[3]	'	[4],[5]	'
Impaired loans without related allowance | Commercial and industrial	'		'		'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	638	[1],[2],[3]	1,641	[1],[4],[5]	638	[1],[2],[3]	1,641	[1],[4],[5]	1,773	[1],[2],[6]
Principal Balance	641	[2],[3]	1,812	[4],[5]	641	[2],[3]	1,812	[4],[5]	1,954	[2],[6]
Average Principal Balance	661	[2],[3]	1,817	[4],[5]	670	[2],[3]	1,817	[4],[5]	'
Interest Income Recognized	'		1	[4],[5]	2	[2],[3]	1	[4],[5]	'
Cash-Basis Interest Income Recognized	'	[2],[3]	'	[4],[5]	'	[2],[3]	'	[4],[5]	'
Impaired loans without related allowance | Commercial mortgage	'		'		'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	646	[1],[2],[3]	421	[1],[4],[5]	646	[1],[2],[3]	421	[1],[4],[5]	236	[1],[2],[6]
Principal Balance	667	[2],[3]	432	[4],[5]	667	[2],[3]	432	[4],[5]	237	[2],[6]
Average Principal Balance	713	[2],[3]	471	[4],[5]	716	[2],[3]	471	[4],[5]	'
Interest Income Recognized	'		'		18	[2],[3]	'		'
Cash-Basis Interest Income Recognized	'	[2],[3]	'	[4],[5]	'	[2],[3]	'	[4],[5]	'
Impaired loans without related allowance | Construction Loans	'		'		'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'		'		'
Recorded Investment	263	[1],[2],[3]	3,072	[1],[4],[5]	263	[1],[2],[3]	3,072	[1],[4],[5]	1,172	[1],[2],[6]
Principal Balance	1,225	[2],[3]	4,035	[4],[5]	1,225	[2],[3]	4,035	[4],[5]	2,134	[2],[6]
Average Principal Balance	1,316	[2],[3]	3,824	[4],[5]	1,495	[2],[3]	3,824	[4],[5]	'
Interest Income Recognized	'		13	[4],[5]	'		13	[4],[5]	'
Cash-Basis Interest Income Recognized	'	[2],[3]	'	[4],[5]	'	[2],[3]	'	[4],[5]	'
[1]	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
[2]	This table excludes all purchased credit-impaired loans, which are discussed in Note 4D, above.
[3]	The table above does not include the recorded investment of $43 thousand of impaired leases without a related Allowance.
[4]	The table above does not include the recorded investment of $62 thousand of impaired leases without a related Allowance.
[5]	This table excludes all purchased credit-impaired loans, which are discussed in Note 5D, above.
[6]	The table above does not include the recorded investment of $63 thousand of impaired leases without a related Allowance.

Recorded_Investment_and_Princi1

Recorded Investment and Principal Balance of Impaired Loans by Portfolio Segment Their Related Allowance for Loan and Lease Losses and Interest Income Recognized (Parenthetical) (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013		Sep. 30, 2013
In Thousands, unless otherwise specified
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded investment of impaired lease without related allowance	$15,143	[1]	$17,506	[1]	$19,408	[1]
Impaired loans without related allowance	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded investment of impaired lease without related allowance	7,060	[1],[2],[3]	8,895	[1],[2],[4]	11,748	[1],[5],[6]
Impaired loans without related allowance | Leases	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Recorded investment of impaired lease without related allowance	$43		$63		$62
[1]	Recorded investment equals principal balance less partial charge-offs and interest payments on non-performing loans that have been applied to principal.
[2]	This table excludes all purchased credit-impaired loans, which are discussed in Note 4D, above.
[3]	The table above does not include the recorded investment of $43 thousand of impaired leases without a related Allowance.
[4]	The table above does not include the recorded investment of $63 thousand of impaired leases without a related Allowance.
[5]	The table above does not include the recorded investment of $62 thousand of impaired leases without a related Allowance.
[6]	This table excludes all purchased credit-impaired loans, which are discussed in Note 5D, above.

Components_of_Deposits_Detail

Components of Deposits (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deposits [Line Items]	'	'
Savings accounts	$142,364	$135,240
Interest-bearing checking accounts	256,890	266,787
Market-rate accounts	550,238	544,310
Wholesale non-maturity deposits	41,290	42,936
Wholesale time deposits	60,171	34,640
Time deposits	121,158	140,794
Total interest-bearing deposits	1,172,111	1,164,707
Non-interest-bearing deposits	438,221	426,640
Total deposits	$1,610,332	$1,591,347

Summary_of_ShortTerm_Borrowing

Summary of Short-Term Borrowings (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
In Thousands, unless otherwise specified
Short-term Debt [Line Items]	'	'	'
Short-term borrowings	$13,980	$10,891	$75,588
Repurchase Agreements	'	'	'
Short-term Debt [Line Items]	'	'	'
Short-term borrowings	$13,980	$10,891	'

Information_Concerning_ShortTe

Information Concerning Short-Term Borrowings (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Short-term Debt [Line Items]	'	'	'	'	'
Balance at period-end	$13,980	$75,588	$13,980	$75,588	$10,891
Maximum amount outstanding at any month-end	28,017	75,588	28,017	75,588	'
Average balance outstanding during the period	$14,074	$14,995	$14,798	$13,455	'
Weighted-average interest rate, as of period-end	0.10%	0.33%	0.10%	0.33%	'
Weighted-average interest rate, paid during the period	0.10%	0.13%	0.11%	0.13%	'

Maturity_of_Long_Term_FHLB_Adv

Maturity of Long- Term FHLB Advances and Other Borrowings (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Total	$230,574	$205,644
Federal Home Loan Bank Advances And Other Borrowings	'	'
Within one year	25,932	3,917
Over one year through five years	199,642	196,727
Over five years through ten years	5,000	5,000
Total	$230,574	$205,644

Rate_and_Maturity_Information_

Rate and Maturity Information on Long- Term Federal Home Loan Bank Advances and Other Borrowings (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Debt Instrument [Line Items]	'		'
Balance	$230,574		$205,644
Fixed Amortizing	'		'
Debt Instrument [Line Items]	'		'
Maturity Start Range	9-Apr-15	[1]	'
Maturity End Range	9-Apr-15	[1]	'
Weighted Average Rate	3.57%		'
Interest Rate Minimum	3.57%		'
Interest Rate Maximum	3.57%		'
Balance	932		2,102
Adjustable Amortizing	'		'
Debt Instrument [Line Items]	'		'
Weighted Average Rate	3.25%	[2]	'
Interest Rate Minimum	3.25%	[2]	'
Interest Rate Maximum	3.25%	[2]	'
Balance	'		7,050	[2]
Bullet Maturity | Fixed Rate	'		'
Debt Instrument [Line Items]	'		'
Maturity Start Range	23-Mar-15	[1]	'
Maturity End Range	20-May-20	[1]	'
Weighted Average Rate	1.41%		'
Interest Rate Minimum	0.58%		'
Interest Rate Maximum	2.41%		'
Balance	163,240		140,000
Bullet Maturity | Variable Rate	'		'
Debt Instrument [Line Items]	'		'
Maturity Start Range	25-Jun-15	[1]	'
Maturity End Range	28-Nov-17	[1]	'
Weighted Average Rate	0.40%		'
Interest Rate Minimum	0.25%		'
Interest Rate Maximum	0.54%		'
Balance	45,000		35,000
Convertible-Fixed	'		'
Debt Instrument [Line Items]	'		'
Maturity Start Range	3-Jan-18	[1],[3]	'
Maturity End Range	20-Aug-18	[1],[3]	'
Weighted Average Rate	2.95%	[3]	'
Interest Rate Minimum	2.58%	[3]	'
Interest Rate Maximum	3.50%	[3]	'
Balance	$21,402	[3]	$21,492	[3]
[1]	Maturity range refers to September 30, 2014 balances.
[2]	Loan from correspondent bank other than FHLB.
[3]	FHLB advances whereby the FHLB has the option, at predetermined times, to convert the fixed interest rate to an adjustable interest rate indexed to the London Interbank Offered Rate ("LIBOR"). The Corporation has the option to prepay these advances, without penalty, if the FHLB elects to convert the interest rate to an adjustable rate. As of September 30, 2014, substantially all the FHLB advances with this convertible feature are subject to conversion in fiscal 2014. These advances are included in the maturity ranges in which they mature, rather than the period in which they are subject to conversion.

Borrowings_Additional_Informat

Borrowings - Additional Information (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]	'	'
Maximum borrowing capacity with FHLB	$876,300,000	'
Unused capacity funds	631,100,000	'
Capital stock of FHLB	12,889,000	11,654,000
Overnight Fed Funds	'	'
Debt Instrument [Line Items]	'	'
Unused capacity funds	64,000,000	'
Federal Reserve Discount Window	'	'
Debt Instrument [Line Items]	'	'
Unused capacity funds	81,300,000	'
Revolving line of credit with correspondent bank	'	'
Debt Instrument [Line Items]	'	'
Unused capacity funds	$5,000,000	'

Derivatives_and_Hedging_Activi2

Derivatives and Hedging Activities - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]	'	'	'	'	'	'
Effective Date	'	'	30-Nov-15	'	30-Nov-15	30-Nov-15
Maturity Date	'	'	28-Nov-22	'	28-Nov-22	28-Nov-22
Reclassifications of interest-rate swap's from other comprehensive income to earnings	$0	$0	$0	$0	'	'
Interest Rate Swap	'	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'	'
FHLB borrowing	'	'	'	'	'	15,000,000

Details_Derivative_Positions_D

Details Derivative Positions (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]	'	'	'
Notional Amount	$15,000	$15,000	'
Trade Date	13-Dec-12	13-Dec-12	'
Effective Date	30-Nov-15	30-Nov-15	30-Nov-15
Maturity Date	28-Nov-22	28-Nov-22	28-Nov-22
Receive (Variable) Index	'US 3-Month LIBOR	'US 3-Month LIBOR	'
Current Project Receive Rate	2.77%	3.60%	'
Pay Fixed Swap Rate	2.38%	2.38%	'
Fair Value of Asset (Liability)	$408	$1,142	'

Stock_Based_Compensation_Addit

Stock Based Compensation - Additional Information (Detail) (USD $)

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Sep. 30, 2014

Apr. 28, 2010

Apr. 25, 2007

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Restricted Stock Awards

Restricted Stock Awards

Stock Options

Stock Options

Performance Stock Awards

Restricted Stock Awards And Restricted Stock Units

Restricted Stock Awards And Restricted Stock Units

Performance Stock Awards and Performance Stock Units

Performance Stock Awards and Performance Stock Units

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Stock award for grants

'

445,002

428,996

'

'

'

'

'

'

'

'

'

Maximum earnings of PSAs

100.00%

'

'

'

'

'

'

'

'

'

'

'

Stock award expenses

'

'

'

'

'

$14,000

$64,000

'

$72,000

$234,000

$216,000

$613,000

Not-yet-recognized compensation expense of unvested award

'

'

'

'

'

0

0

1,900,000

661,000

661,000

'

'

Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition

'

'

'

'

'

'

'

'2 years 3 months 18 days

'

'2 years 1 month 6 days

'

'

Tax benefit related to vesting of stock awards

'

'

'

$13,000

$79,000

'

'

'

'

'

$385,000

$385,000

Schedule_of_Information_about_

Schedule of Information about Options Outstanding (Detail) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Options outstanding, Shares	521,886	591,086
Granted, Shares	'	'
Forfeited, Shares	'	'
Expired, Shares	-750	-750
Exercised, Shares	-33,460	-102,660
Options outstanding, Shares	487,676	487,676
Options outstanding, Weighted Average Exercise Price	$20.84	$20.73
Granted, Weighted Average Exercise Price	'	'
Forfeited, Weighted Average Exercise Price	'	'
Expired, Weighted Average Exercise Price	$21.21	$21.21
Exercised, Weighted Average Exercise Price	$20.41	$20.07
Options outstanding, Weighted Average Exercise Price	$20.87	$20.87
Options outstanding, beginning of period, Weighted Average Grant Date Fair Value	$4.73	$4.70
Granted, Weighted Average Grant Date Fair Value	'	'
Forfeited, Weighted Average Grant Date Fair Value	'	'
Expired, Weighted Average Grant Date Fair Value	$4.86	$4.86
Exercised, Weighted Average Grant Date Fair Value	$4.57	$4.48
Options outstanding, end of period, Weighted Average Grant Date Fair Value	$4.74	$4.74

Schedule_of_Information_about_1

Schedule of Information about Unvested Options (Detail) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Balance, Number of Shares	30,146	30,146
Granted, Shares	'	'
Vested, Shares	-30,146	-30,146
Forfeited, Shares	'	'
Unvested options, Weighted Average Exercise Price	$18.27	$18.27
Granted, Weighted Average Exercise Price	'	'
Vested, Weighted Average Exercise Price	$18.27	$18.27
Forfeited, Weighted Average Exercise Price	'	'
Balance, Weighted Average Grant Date Fair Value	$4.42	$4.42
Granted, Weighted Average Grant Date Fair Value	'	'
Vested, Weighted Average Grant Date Fair Value	$4.42	$4.42
Forfeited, Weighted Average Grant Date Fair Value	'	'

Schedule_of_Proceeds_Related_T

Schedule of Proceeds, Related Tax Benefits Realized from Options Exercised and Intrinsic Value of Options Exercised (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Proceeds from Exercise of Stock options	$683	$810	$2,061	$2,550
Related tax benefit recognized	82	75	256	231
Net proceeds of options exercised	765	885	2,317	2,781
Intrinsic value of options exercised	$309	$215	$886	$661

Schedule_of_Information_about_2

Schedule of Information about Options Outstanding and Exercisable (Detail) (USD $)	9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Number of shares	487,676	521,886	591,086
Weighted average exercise price	$20.87	$20.84	$20.73
Aggregate intrinsic value	$3,636	'	'
Weighted average contractual term in years	'2 years 9 months 18 days	'	'
Number of shares, Exercisable	487,676	'	'
Weighted average exercise price, Exercisable	$20.87	'	'
Aggregate intrinsic value, Exercisable	$3,636	'	'
Weighted average contractual term in years, Exercisable	'2 years 9 months 18 days	'	'

Schedule_of_Unvested_Restricte

Schedule of Unvested Restricted Stock Awards and Restricted Stock Units (Detail) (Restricted Stock Awards And Restricted Stock Units, USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
Restricted Stock Awards And Restricted Stock Units	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Beginning balance, Number of Shares	35,365	54,156
Granted, Number of Shares	16,456	16,456
Vested, Number of Shares	-2,980	-21,771
Forfeited, Number of Shares	-2,560	-2,560
Ending balance, Number of Shares	46,281	46,281
Beginning balance, Weighted Average Grant Date Fair Value	$19.85	$19.36
Granted, Weighted Average Grant Date Fair Value	$28.88	$28.88
Vested, Weighted Average Grant Date Fair Value	$16.78	$18.21
Forfeited, Weighted Average Grant Date Fair Value	$21.48	$21.48
Ending balance, Weighted Average Grant Date Fair Value	$23.17	$23.17

Schedule_of_Unvested_Performan

Schedule of Unvested Performance Stock Awards and Performance Stock Units (Detail) (Performance Stock Awards and Performance Stock Units, USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
Performance Stock Awards and Performance Stock Units	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Beginning balance, Number of Shares	203,980	204,980
Granted, Number of Shares	71,184	71,184
Vested, Number of Shares	-56,946	-56,946
Forfeited, Number of Shares	-900	-1,900
Ending balance, Number of Shares	217,318	217,318
Beginning balance, Weighted Average Grant Date Fair Value	$11.90	$11.90
Granted, Weighted Average Grant Date Fair Value	$15.05	$15.05
Vested, Weighted Average Grant Date Fair Value	$10.07	$10.07
Forfeited, Weighted Average Grant Date Fair Value	$12.59	$12.32
Ending balance, Weighted Average Grant Date Fair Value	$13.41	$13.41

Recovered_Sheet1

Pension and Other Postretirement Benefit Plans - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Net gain on curtailment of nonqualified pension plan	'	'	'	$690,000
QDBP	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Defined benefit plan contributed	0	'	0	'
PRBP	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Percentage of maximum annual payment under Post Retirement Benefit Plan	'	'	120.00%	'
SERP I and SERP II	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Maximum defined benefit plan curtailment	20.00%	'	20.00%	'
Net gain on curtailment of nonqualified pension plan	'	0	'	690,000
Defined benefit plan contributed	37,000	'	11,000	'
Expected contribution to SERP	'	'	$37,000	'

Components_of_Net_Periodic_Ben

Components of Net Periodic Benefits Cost (Benefit) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Gain on curtailment	'	'	'	($690)
SERP I and SERP II	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost	19	18	55	54
Interest cost	46	40	137	119
Amortization of transition obligation	'	'	'	'
Amortization of prior service costs	3	3	10	10
Amortization of net loss	10	13	32	39
Gain on curtailment	'	0	'	-690
Net periodic benefit cost	78	74	234	-468
QDBP	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Interest cost	411	371	1,231	1,114
Expected return on plan assets	-837	-745	-2,511	-2,236
Amortization of transition obligation	'	'	'	'
Amortization of net loss	97	431	293	1,293
Net periodic benefit cost	-329	57	-987	171
PRBP	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Interest cost	8	8	22	22
Amortization of transition obligation	'	'	'	'
Amortization of net loss	14	19	44	58
Net periodic benefit cost	$22	$27	$66	$80

Schedule_of_Detail_Segment_Inf

Schedule of Detail Segment Information (Detail) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013
Net interest income	$19,176		$18,533		$57,341		$53,865		'
Less: loan loss provision	550		959		1,200		2,763		'
Net interest income after provision for loan and lease losses	18,626		17,574		56,141		51,102		'
Other income:	'		'		'		'		'
Fees for wealth management services	9,099		8,635		27,511		26,078		'
Service charges on deposit accounts	663		627		1,920		1,807		'
Loan servicing and other fees	431		481		1,305		1,380		'
Net gain on sale of loans	440		578		1,301		3,588		'
Net gain on sale of available for sale securities	'		'		81		2		'
Net loss on sale of other real estate owned	-49		-1		171		-194		'
BOLI income	76		72		231		270		'
Other operating income	883		995		2,919		3,189		'
Total other income	11,543		11,387		35,439		36,120		'
Other expenses:	'		'		'		'		'
Salaries & wages	9,110		9,012		27,244		26,908		'
Employee benefits	1,652		1,896		5,440		6,433		'
Occupancy & equipment	1,881		1,646		5,497		5,124		'
Amortization of intangible assets	633		658		1,906		1,978		'
Professional fees	701		636		2,208		1,875		'
Other operating expenses	5,984		5,475		17,191		17,764		'
Total non-interest expenses	19,961		19,323		59,486		60,082		'
Segment profit	10,208		9,638		32,094		27,140		'
Pre-tax segment profit after eliminations	10,208		9,638		32,094		27,140		'
% of segment pre-tax profit after eliminations	100.00%		100.00%		100.00%		100.00%		'
Segment assets	2,123,882		2,059,000		2,123,882		2,059,000		2,061,665
Banking	'		'		'		'		'
Net interest income	19,175		18,532		57,339		53,863		'
Less: loan loss provision	550		959		1,200		2,763		'
Net interest income after provision for loan and lease losses	18,625		17,573		56,139		51,100		'
Other income:	'		'		'		'		'
Service charges on deposit accounts	663		627		1,920		1,807		'
Loan servicing and other fees	431		481		1,305		1,380		'
Net gain on sale of loans	440		578		1,301		3,588		'
Net gain on sale of available for sale securities	'		'		81		2		'
Net loss on sale of other real estate owned	-49		-1		171		-194		'
BOLI income	76		72		231		270		'
Other operating income	873		947		2,838		3,051		'
Total other income	2,434		2,704		7,847		9,904		'
Other expenses:	'		'		'		'		'
Salaries & wages	6,179		5,986		18,185		17,898		'
Employee benefits	945		1,196		3,213		4,235		'
Occupancy & equipment	1,507		1,267		4,389		3,994		'
Amortization of intangible assets	68		78		210		237		'
Professional fees	694		609		2,144		1,732		'
Other operating expenses	5,160		4,812		14,696		15,082		'
Total non-interest expenses	14,553		13,948		42,837		43,178		'
Segment profit	6,506		6,329		21,149		17,826		'
Pre-tax segment profit after eliminations	6,413		6,310		20,870		17,503		'
% of segment pre-tax profit after eliminations	62.80%		65.50%		65.00%		64.50%		'
Segment assets	2,084,000		2,017,000		2,084,000		2,017,000		'
Banking | Intersegment (revenues) expenses	'		'		'		'		'
Other expenses:	'		'		'		'		'
Revenue	-93	[1]	-19	[1]	-279	[1]	-323	[1]	'
Wealth Management	'		'		'		'		'
Net interest income	1		1		2		2		'
Net interest income after provision for loan and lease losses	1		1		2		2		'
Other income:	'		'		'		'		'
Fees for wealth management services	9,099		8,635		27,511		26,078		'
Other operating income	10		48		81		138		'
Total other income	9,109		8,683		27,592		26,216		'
Other expenses:	'		'		'		'		'
Salaries & wages	2,931		3,026		9,059		9,010		'
Employee benefits	707		700		2,227		2,198		'
Occupancy & equipment	374		379		1,108		1,130		'
Amortization of intangible assets	565		580		1,696		1,741		'
Professional fees	7		27		64		143		'
Other operating expenses	824		663		2,495		2,682		'
Total non-interest expenses	5,408		5,375		16,649		16,904		'
Segment profit	3,702		3,309		10,945		9,314		'
Pre-tax segment profit after eliminations	3,795		3,328		11,224		9,637		'
% of segment pre-tax profit after eliminations	37.20%		34.50%		35.00%		35.50%		'
Segment assets	40,000		42,000		40,000		42,000		'
Wealth Management | Intersegment (revenues) expenses	'		'		'		'		'
Other expenses:	'		'		'		'		'
Revenue	$93	[1]	$19	[1]	$279	[1]	$323	[1]	'
[1]	Inter-segment revenues consist of rental payments, interest on deposits and management fees.

Schedule_of_Wealth_Management_

Schedule of Wealth Management Segment Information (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Assets under management, administration, supervision and brokerage:	$7,580.80	$7,268.30

Summary_of_Activity_Related_to

Summary of Activity Related to Mortgage Servicing Rights (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Servicing Asset at Amortized Cost [Line Items]	'	'	'	'	'
Balance, beginning of period	$4,760	$4,790	$4,750	$4,491	'
Additions	161	174	403	883	'
Amortization	-128	-187	-371	-617	'
Recovery	3	'	14	91	'
Impairment	'	-33	'	-104	'
Balance, end of period	4,796	4,744	4,796	4,744	'
Fair value	5,719	5,622	5,719	5,622	5,733
Residential mortgage loans serviced for others, end of period	$594,156	$616,636	$594,156	$616,636	'

Summary_of_Key_Economic_Assump

Summary of Key Economic Assumptions and Sensitivity of Current Fair Value of MSRs (Detail) (USD $)	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013		Sep. 30, 2013
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]	'		'		'
Fair value amount of MSRs	$5,719		$5,733		$5,622
Weighted average life (in years)	'6 years 5 months 12 days		'6 years 3 months 18 days		'
Prepayment speeds (constant prepayment rate)	9.90%	[1]	11.10%	[1]	'
10% adverse change	-175		-206		'
20% adverse change	-345		-402		'
Discount rate	10.50%		10.50%		'
10% adverse change	-228		-231		'
20% adverse change	($439)		($445)		'
[1]	Represents the weighted average prepayment rate for the life of the MSR asset.

Mortgage_Servicing_Rights_Addi

Mortgage Servicing Rights - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2014
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]	'
Percentage of sensitivity of the current fair value	10.00%

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets Related to Acquisitions (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'	'
Beginning Balance	'	'	$32,843	'
Additions / Adjustments	'	'	'	'
Amortization	'	'	'	'
Ending Balance	32,843	'	32,843	'
Amortization	-633	-658	-1,906	-1,978
Beginning Balance	'	'	19,365	'
Additions / Adjustments	'	'	'	'
Amortization	'	'	-1,906	'
Ending Balance	17,459	'	17,459	'
Beginning Balance	'	'	52,208	'
Additions / Adjustments	'	'	'	'
Amortization	'	'	-1,906	'
Ending Balance	50,302	'	50,302	'
Wealth Segment	'	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'	'
Beginning Balance	'	'	20,412	'
Additions / Adjustments	'	'	'	'
Amortization	'	'	'	'
Ending Balance	20,412	'	20,412	'
Amortization Period	'	'	'Indefinite	'
Banking Segment	'	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'	'
Beginning Balance	'	'	12,431	'
Additions / Adjustments	'	'	'	'
Amortization	'	'	'	'
Ending Balance	12,431	'	12,431	'
Amortization Period	'	'	'Indefinite	'
Core deposit intangible	'	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'	'
Beginning Balance	'	'	1,342	'
Additions / Adjustments	'	'	'	'
Amortization	'	'	-210	'
Ending Balance	1,132	'	1,132	'
Amortization Period	'	'	'10 years	'
Customer relationships	'	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'	'
Beginning Balance	'	'	13,595	'
Additions / Adjustments	'	'	'	'
Amortization	'	'	-926	'
Ending Balance	12,669	'	12,669	'
Non competition agreements	'	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'	'
Beginning Balance	'	'	3,218	'
Additions / Adjustments	'	'	'	'
Amortization	'	'	-770	'
Ending Balance	2,448	'	2,448	'
Minimum | Customer relationships	'	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'	'
Amortization Period	'	'	'10 years	'
Minimum | Non competition agreements	'	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'	'
Amortization Period	'	'	'5 years	'
Maximum | Customer relationships	'	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'	'
Amortization Period	'	'	'20 years	'
Maximum | Non competition agreements	'	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'	'
Amortization Period	'	'	'5 years 6 months	'
Trade name	'	'	'	'
Schedule Of Goodwill And Other Intangible Assets [Line Items]	'	'	'	'
Beginning Balance	'	'	1,210	'
Additions / Adjustments	'	'	'	'
Amortization	'	'	'	'
Ending Balance	$1,210	'	$1,210	'
Amortization Period	'	'	'Indefinite	'

Components_of_Accumulated_Othe

Components of Accumulated Other Comprehensive (Loss) Income (Detail) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended			3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
					Accumulated Net Unrealized Investment Gain (Loss)	Accumulated Net Unrealized Investment Gain (Loss)	Accumulated Net Unrealized Investment Gain (Loss)	Accumulated Net Unrealized Investment Gain (Loss)	Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges	Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges	Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges	Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges	Accumulated Defined Benefit Plans Adjustment	Accumulated Defined Benefit Plans Adjustment	Accumulated Defined Benefit Plans Adjustment	Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Beginning balance	($3,548)	($11,105)	($5,565)	($10,078)	$1,536	($123)	($857)	$3,164	$274	$743	($24)	$577	($5,358)	($11,559)	($5,451)	($13,218)
Net change	-383	296	1,634	-731	-421	50	1,972	-3,237	-8	-477	601	'	46	246	139	1,905
Ending balance	($3,931)	($10,809)	($3,931)	($10,809)	$1,115	($73)	$1,115	($73)	$266	$266	$577	$577	($5,312)	($11,313)	($5,312)	($11,313)

Amounts_Reclassified_from_Each

Amounts Reclassified from Each Component of Accumulated Other Comprehensive (Loss) Income (Detail) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'		'
Realization of gain on sale of investment securities available for sale	'		'		$81		$2
Net gain on curtailment of nonqualified pension plan	'		'		'		690
Income before income taxes	10,208		9,638		32,094		27,140
Less: income tax (expense) benefit	3,702		3,237		11,295		9,167
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Accumulated Net Unrealized Investment Gain (Loss)	'		'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'		'
Realization of gain on sale of investment securities available for sale	'		'		-81		-2
Less: income tax (expense) benefit	'		'		-28		-1
Net of income tax	'		'		-53		-1
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Unfunded pension liability	'		'		'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'		'		'
Amortization of net loss included in net periodic pension costs	121	[1]	463	[1]	369	[1]	1,390	[1]
Amortization of prior service cost included in net periodic pension costs	3	[1]	3	[1]	10	[1]	10	[1]
Amortization of transition obligation included in net periodic pension costs	'	[1]	'	[1]	'	[1]	'	[1]
Net gain on curtailment of nonqualified pension plan	'		'		'		-690
Income before income taxes	124		466		379		710
Less: income tax (expense) benefit	43		163		133		249
Net of income tax	$81		$303		$246		$461
[1]	Accumulated other comprehensive loss components are included in the computation of net periodic pension cost. See Note 9 - Pension and Other Post-Retirement Benefit Plans

Shareholders_Equity_Additional

Shareholders' Equity - Additional Information (Detail) (USD $)

1 Months Ended

3 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

Apr. 30, 2012

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Aug. 05, 2014

13-May-14

Feb. 10, 2014

Dec. 31, 2013

Apr. 30, 2012

Oct. 23, 2014

Sep. 30, 2014

Maximum

Subsequent Event

Dividend Reinvestment And Share Purchase Plan

Class of Stock [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Regular quarterly dividend payable per share

'

$0.19

'

'

$0.17

$0.55

$0.51

'

'

'

'

'

$0.19

'

Dividend payable date

'

'

'

'

'

1-Dec-14

'

'

'

'

'

'

'

'

Dividend payment record date

'

'

'

'

'

4-Nov-14

'

'

'

'

'

'

'

'

Regular quarterly dividend paid per share

'

$0.19

$0.18

$0.18

'

'

'

'

'

'

'

'

'

'

Total dividend paid

'

$2,600,000

$2,500,000

$2,500,000

'

'

'

'

'

'

'

'

'

'

Shares outstanding as on the date

'

13,730,581

'

'

'

13,730,581

'

13,810,468

13,780,630

13,731,337

13,650,354

'

'

'

Prospectus in Shelf Registration Statement securities authorized to be issued

150,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of common stock shares registered Shelf Registration Statement

'

'

'

'

'

'

'

'

'

'

'

1,500,000

'

'

Maximum amount of investment under Dividend Reinvestment and Stock Purchase Plan

120,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares issued

'

'

'

'

'

'

'

'

'

'

'

'

'

1,602

Value of shares issued

'

'

'

'

'

'

'

'

'

'

'

'

'

44,000

Share-based awards and options exercises, shares

'

33,460

'

'

'

102,660

'

'

'

'

'

'

'

'

Share-based awards and options exercises

'

'

'

'

'

$2,100,000

'

'

'

'

'

'

'

'

Accounting_for_Uncertainty_in_1

Accounting for Uncertainty in Income Taxes - Additional Information (Detail) (USD $)	Sep. 30, 2014	Sep. 30, 2013
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]	'	'
Uncertain income tax positions, interest and penalties expense accrued	$0	$0

Fair_Value_of_Assets_Measured_

Fair Value of Assets Measured on Recurring and Non-Recurring Basis (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	$266.30	$290.30
Total assets measured at fair value on a non-recurring basis	20.1	21.9
Mortgage-backed securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	106.2	119.4
Total assets measured at fair value on a non-recurring basis	5.7	4.9
Impaired loans and leases	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured at fair value on a non-recurring basis	13.5	16.1
Other real estate owned	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured at fair value on a non-recurring basis	0.9	0.9
U.S. Treasury securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	0.1	0.1
Obligations of U.S. government agency securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	71.1	69.5
Obligations of state and political subdivisions	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	33.7	37
Collateralized mortgage obligations	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	37.1	44.2
Mutual funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	15.8	17.1
Other debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	1.9	1.9
Derivative	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	0.4	1.1
Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	15.9	17.2
Level 1 | U.S. Treasury securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	0.1	0.1
Level 1 | Mutual funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	15.8	17.1
Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	250.4	273.1
Level 2 | Mortgage-backed securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	106.2	119.4
Level 2 | Obligations of U.S. government agency securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	71.1	69.5
Level 2 | Obligations of state and political subdivisions	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	33.7	37
Level 2 | Collateralized mortgage obligations	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	37.1	44.2
Level 2 | Other debt securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	1.9	1.9
Level 2 | Derivative	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured on a recurring basis at fair value	0.4	1.1
Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured at fair value on a non-recurring basis	20.1	21.9
Level 3 | Mortgage-backed securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured at fair value on a non-recurring basis	5.7	4.9
Level 3 | Impaired loans and leases	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured at fair value on a non-recurring basis	13.5	16.1
Level 3 | Other real estate owned	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets measured at fair value on a non-recurring basis	$0.90	$0.90

Fair_Value_Measurement_Additio

Fair Value Measurement - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
Fair Value Measurements Disclosure [Line Items]	'	'
Transfers between level 1 to level 2	$0	$0
Transfers between level 2 to level 1	0	0
Allowance for Loan and Lease Losses	'	'
Fair Value Measurements Disclosure [Line Items]	'	'
Net increase (decrease) in allowance	($102)	$138
Collateral securing loan | Minimum	'	'
Fair Value Measurements Disclosure [Line Items]	'	'
Discount on appraisals of collateral securing loan	'	10.00%
Collateral securing loan | Maximum	'	'
Fair Value Measurements Disclosure [Line Items]	'	'
Discount on appraisals of collateral securing loan	'	50.00%

Recovered_Sheet2

Fair Value Of Financial Instruments - Additional Information (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Collateral securing loan | Minimum	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Discount on appraisals of collateral securing loan	10.00%
Collateral securing loan | Maximum	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Discount on appraisals of collateral securing loan	50.00%
Term Loan	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Term loan	5.4

Carrying_Amount_Estimated_Fair

Carrying Amount, Estimated Fair Value and Fair Value Hierarchy Level (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013		Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financial assets:	'		'		'	'
Cash and cash equivalents	$67,565		$81,071		$96,161	$175,686
Investment securities, available for sale	265,939		285,808		'	'
Investment securities, trading	3,803		3,437		'	'
Loans held for sale	1,375		1,350		'	'
Net portfolio loans and leases	1,629,639		1,531,670		'	'
Mortgage servicing rights	4,796		4,750		'	'
Other assets	18,351		18,846		'	'
Financial liabilities:	'		'		'	'
Deposits	1,610,332		1,591,347		'	'
Short-term borrowings	13,980		10,891		75,588	'
Long-term FHLB advances and other borrowings	230,574		205,644		'	'
Other liabilities	20,513		23,044		'	'
Carrying Amount	'		'		'	'
Financial assets:	'		'		'	'
Investment securities, available for sale	265,939	[1]	285,808	[1]	'	'
Total financial assets	1,996,259		1,929,905		'	'
Financial liabilities:	'		'		'	'
Total financial liabilities	1,876,273		1,831,767		'	'
Carrying Amount | Level 1	'		'		'	'
Financial assets:	'		'		'	'
Cash and cash equivalents	67,565	[1]	81,071	[1]	'	'
Carrying Amount | Level 2	'		'		'	'
Financial assets:	'		'		'	'
Investment securities, trading	3,803	[1]	3,437	[1]	'	'
Loans held for sale	1,375	[1]	1,350	[1]	'	'
Financial liabilities:	'		'		'	'
Deposits	1,610,332	[1]	1,591,347	[1]	'	'
Short-term borrowings	13,980	[1]	10,891	[1]	'	'
Long-term FHLB advances and other borrowings	230,574	[1]	205,644	[1]	'	'
Other liabilities	21,387	[1]	23,885	[1]	'	'
Carrying Amount | Level 3	'		'		'	'
Financial assets:	'		'		'	'
Net portfolio loans and leases	1,629,639	[1]	1,531,670	[1]	'	'
Mortgage servicing rights	4,796	[1]	4,750	[1]	'	'
Other assets	23,142	[1]	21,819	[1]	'	'
Estimated Fair Value	'		'		'	'
Financial assets:	'		'		'	'
Investment securities, available for sale	265,939	[1]	285,808	[1]	'	'
Total financial assets	2,009,416		1,933,849		'	'
Financial liabilities:	'		'		'	'
Total financial liabilities	1,874,985		1,831,140		'	'
Estimated Fair Value | Level 1	'		'		'	'
Financial assets:	'		'		'	'
Cash and cash equivalents	67,565	[1]	81,071	[1]	'	'
Estimated Fair Value | Level 2	'		'		'	'
Financial assets:	'		'		'	'
Investment securities, trading	3,803	[1]	3,437	[1]	'	'
Loans held for sale	1,375	[1]	1,350	[1]	'	'
Financial liabilities:	'		'		'	'
Deposits	1,609,694	[1]	1,591,215	[1]	'	'
Short-term borrowings	13,980	[1]	10,891	[1]	'	'
Long-term FHLB advances and other borrowings	229,924	[1]	205,149	[1]	'	'
Other liabilities	21,387	[1]	23,885	[1]	'	'
Estimated Fair Value | Level 3	'		'		'	'
Financial assets:	'		'		'	'
Net portfolio loans and leases	1,641,873	[1]	1,534,631	[1]	'	'
Mortgage servicing rights	5,719	[1]	5,733	[1]	'	'
Other assets	$23,142	[1]	$21,819	[1]	'	'
[1]	See Note 16 for a description of fair value hierarchy levels.

Carrying_Amount_Estimated_Fair1

Carrying Amount, Estimated Fair Value and Fair Value Hierarchy Level (Parenthetical) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other assets	$18,351	$18,846
Level 2 | Derivative	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Other assets	$400	$1,100

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (Subsequent Event, USD $)	0 Months Ended
In Millions, unless otherwise specified	Oct. 01, 2014	Oct. 01, 2014
	Installment
Subsequent Event	'	'
Subsequent Event [Line Items]	'	'
Consideration paid in cash	$5.40	'
Contingent cash payments	'	$1.60
Contingent cash payments installments period	3	'