WSFS Financial (WSFS) 10-Q 12 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 01, 2013
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'WSFS	'
Entity Registrant Name	'WSFS FINANCIAL CORP	'
Entity Central Index Key	'0000828944	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	8,850,368

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Interest income:	'	'	'	'
Interest and fees on loans	$32,708	$32,003	$96,268	$98,185
Interest on mortgage-backed securities	3,527	4,344	10,726	14,953
Interest on reverse mortgages	248	35	462	-41
Interest and dividends on investment securities	546	123	999	376
Other interest income	87	9	134	27
Total interest income	37,116	36,514	108,589	113,500
Interest expense:	'	'	'	'
Interest on deposits	1,673	3,237	5,513	10,652
Interest on Federal Home Loan Bank advances	482	1,403	1,376	4,985
Interest on federal funds purchased and securities sold under agreements to repurchase	244	253	738	765
Interest on trust preferred borrowings	339	369	1,005	1,114
Interest on senior debt	943	353	2,830	353
Interest on other borrowings	29	6	85	130
Total interest expenses	3,710	5,621	11,547	17,999
Net interest income	33,406	30,893	97,042	95,501
Provision for loan losses	1,969	3,751	5,880	28,379
Net interest income after provision for loan losses	31,437	27,142	91,162	67,122
Noninterest income:	'	'	'	'
Credit/debit card and ATM income	6,374	5,738	18,231	17,031
Deposit service charges	4,407	4,360	12,637	12,673
Investment management and fiduciary revenue	3,836	3,258	11,623	9,716
Reverse mortgage consolidation gain	3,801	'	3,801	'
Mortgage banking activities, net	907	914	2,837	1,882
Loan fee income	419	706	1,401	1,803
Security gains, net	306	2,451	2,856	17,797
Bank owned life insurance income	74	1,126	162	1,447
Other income	2,618	1,195	6,807	3,149
Total non interest income	22,742	19,748	60,355	65,498
Noninterest expenses:	'	'	'	'
Salaries, benefits and other compensation	17,648	16,942	53,086	49,840
Occupancy expense	3,385	3,235	10,169	9,697
Equipment expense	2,044	1,701	5,990	5,403
Data processing and operations expenses	1,548	1,402	4,291	4,190
FDIC expenses	959	1,384	3,067	4,262
Professional fees	866	671	2,712	2,917
Marketing expense	643	379	1,768	1,976
Loan workout and OREO expenses	492	2,115	1,432	4,902
Other operating expense	5,224	4,324	15,816	12,972
Total non interest expenses	32,809	32,153	98,331	96,159
Income before taxes	21,370	14,737	53,186	36,461
Income tax provision	7,210	4,758	18,378	12,708
Net income	14,160	9,979	34,808	23,753
Dividends on preferred stock and accretion of discount	332	693	1,633	2,077
Net income allocable to common stockholders	$13,828	$9,286	$33,175	$21,676
Earnings per share:	'	'	'	'
Basic	$1.57	$1.07	$3.77	$2.49
Diluted	$1.54	$1.06	$3.72	$2.47

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Net Income	$14,160	$9,979	$34,808	$23,753
Other comprehensive (loss) income:	'	'	'	'
Unrealized (losses) gains on securities available-for-sale	-4,901	15,341	-43,781	27,605
Tax benefit (expense)	1,795	-5,783	16,532	-10,440
Net of tax amount	-3,106	9,558	-27,249	17,165
Reclassification adjustment for gains included in net income	-306	-2,451	-2,856	-17,797
Tax expense	116	931	1,085	6,763
Net of tax amount	-190	-1,520	-1,771	-11,034
Total other comprehensive (loss) income	-3,296	8,038	-29,020	6,131
Total comprehensive income	$10,864	$18,017	$5,788	$29,884

CONSOLIDATED_STATEMENTS_OF_CON

CONSOLIDATED STATEMENTS OF CONDITION (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets	'	'
Cash and due from banks	$96,021	$93,629
Cash in non-owned ATMs	406,227	406,627
Interest-bearing deposits in other banks	197	631
Total cash and cash equivalents	502,445	500,887
Investment securities, available-for-sale	806,926	907,955
Investment securities, trading	'	12,590
Loans held-for-sale	12,608	12,758
Loans, net of allowance for loan losses of $41,431 at September 30, 2013 and $43,922 at December 31, 2012	2,829,992	2,723,916
Reverse mortgage loans	40,095	-457
Bank-owned life insurance	63,077	62,915
Stock in Federal Home Loan Bank of Pittsburgh, at cost	33,876	31,165
Assets acquired through foreclosure	7,163	4,622
Accrued interest receivable	9,833	9,652
Premises and equipment	36,001	38,257
Goodwill	32,395	28,146
Intangible assets	7,146	5,174
Other assets	61,099	37,568
Total assets	4,442,656	4,375,148
Deposits:	'	'
Noninterest-bearing demand	609,115	631,026
Interest-bearing demand	669,173	538,195
Money market	780,753	933,901
Savings	378,397	389,977
Time	256,397	316,986
Jumbo certificates of deposit - customer	251,764	294,237
Total customer deposits	2,945,599	3,104,322
Brokered deposits	175,599	170,641
Total deposits	3,121,198	3,274,963
Federal funds purchased and securities sold under agreements to repurchase	114,000	110,000
Federal Home Loan Bank advances	600,435	376,310
Trust preferred borrowings	67,011	67,011
Senior debt	55,000	55,000
Other borrowed funds	38,169	28,945
Bonds payable	26,340	'
Accrued interest payable	3,254	1,099
Other liabilities	43,298	40,766
Total liabilities	4,068,705	3,954,094
Stockholders' Equity:	'	'
Serial preferred stock $0.01 par value, 7,500,000 shares authorized; issued 0 at September 30, 2013 and 52,625 issued at December 31, 2012	'	1
Common stock $0.01 par value, 20,000,000 shares authorized; issued 18,425,025 at September 30, 2013 and 18,354,055 at December 31, 2012	184	184
Capital in excess of par value	175,176	222,978
Accumulated other comprehensive (loss) / income	-16,077	12,943
Retained earnings	462,948	433,228
Treasury stock at cost, 9,580,569 shares at September 30, 2013 and December 31, 2012	-248,280	-248,280
Total stockholders' equity	373,951	421,054
Total liabilities and stockholders' equity	$4,442,656	$4,375,148

CONSOLIDATED_STATEMENTS_OF_CON1

CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Allowance for loan losses	$41,431	$43,922
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	7,500,000	7,500,000
Preferred stock, shares issued	0	52,625
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	18,425,025	18,354,055
Treasury stock , shares	9,580,569	9,580,569

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Operating activities:	'	'
Net Income	$34,808	$23,753
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Provision for loan losses	5,880	28,379
Depreciation of premises and equipment	4,329	3,803
Amortization, net	8,575	8,123
(Increase) decrease in accrued interest receivable	-181	1,451
(Decrease) increase in other assets	-6,126	8,726
Origination of loans held-for-sale	-178,819	-137,298
Proceeds from sales of loans held-for-sale	191,831	142,535
Gain on mortgage banking activities, net	-2,837	-1,882
Gain on mark-to-market adjustment on trading securities	125	'
Security gains, net	-2,981	-17,797
Reverse mortgage consolidation gain	-3,801	'
Stock-based compensation expense	2,294	1,600
Excess tax benefits from share-based payment arrangements	-266	-99
Increase in accrued interest payable	2,155	4,425
Decrease in other liabilities	-9,488	-3,432
Loss on sale of assets acquired through foreclosure and valuation adjustments, net	203	2,891
Increase in value of bank-owned life insurance	-162	-1,447
Decrease in capitalized interest, net	-802	-478
Net cash provided by operating activities	44,737	63,253
Investing activities:	'	'
Maturities of investment securities	510	5,039
Sale of investment securities available for sale	239,383	616,254
Purchase of investment securities available-for-sale	-255,277	-751,363
Repayments of investment securities available-for-sale	64,369	101,729
Disbursements for reverse mortgages	-40	-94
Proceeds from loan disposition	'	31,307
Net increase in loans	-121,589	-38,190
Cash received in consolidation of reverse mortgage securitization trust	5,833	'
Payment of bank-owned life insurance	'	2,021
Acquisition of Array/Arrow, net of cash acquired	-4,189	'
Net (increase) decrease in stock of Federal Home Loan Bank of Pittsburgh	-2,711	5,585
Sales of assets acquired through foreclosure, net	4,682	11,789
Investment in premises and equipment, net	-1,948	-5,747
Net cash (used for) provided by investing activities	-70,977	-21,670
Financing activities:	'	'
Net (decrease) increase in demand and saving deposits	-46,072	101,059
Decrease in time deposits	-103,062	-58,991
Increase (decrease) in brokered deposits	4,958	-25,717
Receipts from FHLB advances	29,071,254	27,299,083
Repayments of FHLB advances	-28,847,129	-27,444,895
Receipts from federal funds purchased and securities sold under agreement to repurchase	15,682,425	14,135,000
Repayments of federal funds purchased and securities sold under agreement to repurchase	-15,678,425	-14,085,000
Repayment of unsecured debt	'	-30,000
Issuance of Senior Debt	'	52,691
Dividends paid	-6,017	-5,115
Issuance of common stock and exercise of common stock options	2,223	1,086
Repurchase of common stock warrants	'	-1,800
Redemption of preferred stock	-52,623	'
Excess tax benefits from share-based payment arrangements	266	99
Net cash provided by (used for) financing activities	27,798	-62,500
Increase (decrease) in cash and cash equivalents	1,558	-20,917
Cash and cash equivalents at beginning of period	500,887	468,017
Cash and cash equivalents at end of period	502,445	447,100
Supplemental Disclosure of Cash Flow Information:	'	'
Cash paid for interest during the period	9,392	13,574
Cash paid for income taxes, net	15,822	8,379
Loans transferred to assets acquired through foreclosure	7,427	9,290
Net change in other comprehensive income	-29,021	6,131
Fair value of assets acquired	12,817	'
Fair value of liabilities assumed	10,127	'
Fair value of assets consolidated	41,397	'
Fair value of liabilities consolidated	$26,339	'

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Basis of Presentation	'
	1. BASIS OF PRESENTATION
	Our Consolidated Financial Statements include the accounts of WSFS Financial Corporation (“the Company”, “our Company”, “we”, “our” or “us”), Wilmington Savings Fund Society, FSB (“WSFS Bank” or the “Bank”) and Montchanin Capital Management, Inc. (“Montchanin”). We also have one unconsolidated affiliate, WSFS Capital Trust III (“the Trust”). WSFS Bank has two fully-owned subsidiaries, WSFS Investment Group, Inc. (“WIG”) and Monarch Entity Services LLC (“Monarch”) and Montchanin has one wholly owned subsidiary, Cypress Capital Management, LLC (“Cypress”). In addition to the subsidiaries listed above, we also have one consolidated variable interest entity, SASCO 2002-RM1 (“SASCO”), which is a reverse mortgage securitization trust.
	Founded in 1832, the Bank is one of the ten oldest banks continuously operating under the same name in the United States. We provide residential and commercial real estate, commercial and consumer lending services, as well as retail deposit and cash management services. In addition, we offer a variety of wealth management and trust services to personal and corporate customers through our Wealth Management division. Lending activities are funded primarily with customer deposits and borrowings. The Federal Deposit Insurance Corporation (“FDIC”) insures our customers’ deposits to their legal maximums. We serve our customers primarily from our 51 offices located in Delaware (41), Pennsylvania (8), Virginia (1) and Nevada (1) and through our website at www.wsfsbank.com. Information on our website is not incorporated by reference into this quarterly report.
	Amounts subject to significant estimates are items such as the allowance for loan losses and reserves for lending related commitments, goodwill, intangible assets, post-retirement benefit obligations, the fair value of financial instruments, investment in reverse mortgage, income taxes and other-than-temporary impairments (“OTTI”). Among other effects, changes to such estimates could result in future impairments of investment securities, goodwill and intangible assets and establishment of allowances for loan losses and lending related commitments as well as increased post-retirement benefits expense.
	Our accounting and reporting policies conform with U.S. generally accepted accounting principles and prevailing practices within the banking industry for interim financial information and Rule 10-01 of the Securities and Exchange Commission (“SEC”) Regulation S-X. Rule 10-01 of Regulation S-X does not require us to include all information and notes for complete financial statements and prevailing practices within the banking industry. Operating results for the three and nine month periods ended September 30, 2013 are not necessarily indicative of the results that may be expected for any future quarters or for the year ending December 31, 2013. For further information, refer to the consolidated financial statements and the accompanying notes included in our Annual Report on Form 10-K for the year ended December 31, 2012 as filed with the SEC.
	Whenever necessary, reclassifications have been made to prior period Consolidated Financial Statements to conform to the current period’s presentation. All significant intercompany transactions were eliminated in consolidation.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	2. EARNINGS PER SHARE
	The following table shows the computation of basic and diluted earnings per share:
		For the three months ended				For the nine months ended
		September 30,				September 30,
		2013		2012		2013		2012
		(In Thousands, Except Per Share Data)
	Numerator:
	Net income allocable to common stockholders	$	13,828	$	9,286	$	33,175	$	21,676
	Denominator:
	Denominator for basic earnings per share—weighted average shares		8,828		8,712		8,804		8,702
	Effect of dilutive employee stock options and warrants		148		83		106		77
	Denominator for diluted earnings per share – adjusted weighted average shares and assumed exercise		8,976		8,795		8,910		8,779
	Earnings per share:
	Basic:
	Net income allocable to common stockholders	$	1.57	$	1.07	$	3.77	$	2.49
	Diluted:
	Net income allocable to common stockholders	$	1.54	$	1.06	$	3.72	$	2.47
	Outstanding common stock equivalents having no dilutive effect		402		338		557		361

Investment_Securities

Investment Securities	9 Months Ended
	Sep. 30, 2013
Investments Debt And Equity Securities [Abstract]	'
Investment Securities	'
	3. INVESTMENT SECURITIES
	The following tables detail the amortized cost and the estimated fair value of our investment securities available-for-sale and trading securities:
			Amortized		Gross		Gross			Fair
			Cost		Unrealized		Unrealized			Value
					Gains		Losses
			(In Thousands)
	Available-for-sale securities:
	September 30, 2013:
	State and political subdivisions		$	87,987	$	224	$	(4,879	)	$	83,332
	U.S. Government and government sponsored enterprises (“GSE”)			41,670		131		(3	)		41,798
	Federal National Mortgage Association (“FNMA”) Mortgage-Backed Securities (“MBS”)			379,721		518		(11,990	)		368,249
	Collateralized Mortgage Obligation (“CMO”) (1)			112,887		169		(4,585	)		108,471
	Federal Home Loan Mortgage Corporation (“FHLMC”) MBS			109,482		38		(3,397	)		106,123
	Government National Mortgage Association (“GNMA”) MBS			100,349		1,134		(2,530	)		98,953
			$	832,096	$	2,214	$	(27,384	)	$	806,926
	31-Dec-12
	State and political subdivisions			3,120		89		—			3,209
	GSE			46,726		266		(2	)		46,990
	FNMA			396,910		9,588		(243	)		406,255
	CMO (1)			251,848		7,849		(301	)		259,396
	FHLMC			58,596		1,171		(117	)		59,650
	GNMA			129,288		3,221		(54	)		132,455
			$	886,488	$	22,184	$	(717	)	$	907,955
	Trading securities
	September 30, 2013:
	CMO		$	—	$	—	$	—		$	—
	31-Dec-12
	CMO		$	12,590	$	—	$	—		$	12,590
	-1	Includes agency CMO securities classified as available-for-sale
	The scheduled maturities of investment securities available-for-sale at September 30, 2013 and December 31, 2012 were as follows:
			Available-for-Sale
			Amortized		Fair
			Cost		Value
			(In Thousands)
	September 30, 2013
	Within one year		$	22,860	$	22,932
	After one year but within five years			32,661		32,465
	After five years but within ten years			312,070		298,900
	After ten years			464,505		452,629
			$	832,096	$	806,926
	December 31, 2012
	Within one year		$	19,001	$	19,115
	After one year but within five years			28,855		29,034
	After five years but within ten years			321,103		329,580
	After ten years			517,529		530,226
			$	886,488	$	907,955
	The portfolio of available-for-sale “MBS” includes 134 securities all of which are GSE securities with an amortized cost of $702.4 million. All securities were AAA-rated at the time of purchase. All securities were re-evaluated for OTTI at September 30, 2013. The result of this evaluation showed no OTTI for the third quarter of 2013. The weighted average duration of MBS was 5.8 years at September 30, 2013.
	MBS have expected maturities that differ from their contractual maturities. These differences arise because borrowers may have the right to call or prepay obligations with or without a prepayment penalty.
	At September 30, 2013, investment securities with market values aggregating $513.0 million were pledged as collateral for retail customer repurchase agreements, municipal deposits, and other obligations. From time to time, investment securities are also pledged as collateral for FHLB borrowings. There were no FHLB pledged investment securities at September 30, 2013.
	During the first nine months of 2013, we sold $239.9 million of investment securities categorized as available-for-sale for net gains of $3.0 million. In the first nine months of 2012, proceeds from the sale of investment securities available-for-sale were $616.3 million and resulted in net gains of $17.7 million. The cost basis of all investment securities sales is based on the specific identification method.
	As of September 30, 2013, our investment securities portfolio had remaining unamortized premiums of $25.1 million and $90,000 of unaccreted discounts.
	At September 30, 2013, we owned investment securities totaling $678.9 million in which the amortized cost basis exceeded fair value. Total unrealized losses on those securities were $27.4 million at September 30, 2013. The temporary impairment is the result of changes in market interest rates subsequent to the purchase of the securities. Our investment portfolio is reviewed each quarter for indications of impairment. This review includes analyzing the length of time and the extent to which the fair value has been lower than the cost, the financial condition and near-term prospects of the issuer, including any specific events which may influence the operations of the issuer and our intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in the market. We evaluate our intent and ability to hold securities based upon our investment strategy for the particular type of security and our cash flow needs, liquidity position, capital adequacy and interest rate risk position. In addition, we do not have the intent to sell, nor is it more likely-than-not we will be required to sell these securities before we are able to recover the amortized cost basis.
	During the first nine months of 2013, we purchased $77.7 million of municipal bonds. The purpose was to improve return, diversify our investment portfolio and reduce our effective tax rate.
	For these investment securities with unrealized losses, the table below shows our gross unrealized losses and fair value by investment category and length of time that individual securities were in a continuous unrealized loss position at September 30, 2013.
			Less than 12 months				12 months or longer					Total
			Fair		Unrealized		Fair			Unrealized		Fair		Unrealized
			Value		Loss		Value			Loss		Value		Loss
			(In Thousands)
	Available-for-sale
	State and political subdivisions		$	59,470	$	4,879	$	—		$	—	$	59,470	$	4,879
	U.S Government and agencies			—		—		2,003			3		2,003		3
	FNMA			331,949		11,840		4,060			150		336,009		11,990
	CMO			99,464		4,584		1,339			1		100,803		4,585
FHLMC			105,539		3,397		—			—		105,539		3,397
GNMA			75,096		2,530		—			—		75,096		2,530
Total temporarily impaired investments		$	671,518	$	27,230	$	7,402		$	154	$	678,920	$	27,384
The table below shows our investment securities’ gross unrealized losses and fair value by investment category and length of time that individual securities were in a continuous unrealized loss position at December 31, 2012.
		Less than 12 months				12 months or longer					Total
		Fair		Unrealized		Fair			Unrealized		Fair		Unrealized
		Value		Loss		Value			Loss		Value		Loss
		(In Thousands)
Available-for-sale
State and political subdivisions		$	—	$	—	$	—		$	—	$	—	$	—
U.S Government and agencies			2,008		2		—			—		2,008		2
FNMA			43,696		243		—			—		43,696		243
CMO			40,358		268		1,364			33		41,722		301
FHLMC			13,884		117		—			—		13,884		117
GNMA			10,029		54		—			—		10,029		54
Total temporarily impaired investments		$	109,975	$	684	$	1,364		$	33	$	111,339	$	717

Allowance_for_Loan_Losses_and_

Allowance for Loan Losses and Credit Quality Information	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Allowance for Loan Losses and Credit Quality Information	'
	4. ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION
	Allowance for Loan Losses
	We maintain an allowance for loan losses and charge losses to this allowance when such losses are realized. We established our allowance for loan losses in accordance with guidance provided in the SEC’s Staff Accounting Bulletin 102 (“SAB 102”). The determination of the allowance for loan losses requires significant judgment reflecting our best estimate of impairment related to specifically identified impaired loans as well as probable loan losses in the remaining loan portfolio. Our evaluation is based upon a continuing review of these portfolios. The following are included in our allowance for loan losses:
		•		Specific reserves for impaired loans
		•		Allowances for pools of homogenous loans based on historical loss experience
		•		Adjustments for qualitative and environmental factors
		•		Allowance for model estimation and complexity risk
	Specific reserves are established for impaired loans where we have identified significant conditions or circumstances related to specific credits that indicate losses are probable. Unless loans are well-secured and collection is imminent, all loans that are 90 days past due are deemed impaired. Reserves for impaired loans are generally charged-off within 90 days of impairment recognition. Estimated losses are based on collateral values, estimates of future cash flows, or market valuations.
	Allowances for pooled homogeneous loans, that are not deemed impaired, are based on historical loss experience. Estimated losses for pooled portfolios are determined differently for commercial loan pools and retail loan pools. Commercial loans are pooled into the following segments: Business Loans (Commercial and Industrial Loans), Commercial Real Estate – Owner-Occupied, Commercial Real Estate – Investor, and Construction Loans. Each pool is further segmented by internally assessed risk ratings. Loan losses for commercial loans are estimated by determining the probability of default and expected loss severity upon default. Probability of default is calculated based on the historical rate of migration to impaired status during the last fourteen quarters. This was an increase of one quarter over the previous period’s analysis. This adjustment provides a more representative period and accurate estimation of the allowance at the current point in this credit cycle. Loss severity is calculated as the actual loan losses (net of recoveries) on impaired loans in the respective pool during the same time frame. Retail loans are pooled into the following segments: residential mortgage loans, home equity secured loans, and all other consumer loans. Pooled reserves for retail loans are calculated based solely on the previous three year average loss rate.
	Qualitative and environmental adjustment factors are taken into consideration when determining the above reserve estimates or core reserves. These adjustment factors are based upon our evaluation of various current internal and external conditions including:
		•		Assessment of current underwriting policies, staff, and portfolio mix
		•		Internal trends of delinquency, nonaccrual and criticized loans by segment
		•		Assessment of risk rating accuracy, control and regulatory assessments/environment
		•		General economic conditions — locally and nationally
		•		Market trends impacting collateral values
		•		Competitive environment as it could impact loan structure and underwriting
	The above factors are based on their relative standing compared to the period which historic losses are used in core reserve estimates and current directional trends. Each individual qualitative and environmental factor in our model can add or subtract to core reserves.
	The final component of our allowance for loan losses is a reserve for model estimation and complexity risk. The calculation of reserves is generally quantitative; however, qualitative estimates of valuations and risk assessment are necessary. We increased our calculated reserves by 2% to account for model estimation and complexity risk as of September 30, 2013 and December 31, 2012.
	Our loan officers and risk managers meet at least quarterly to discuss and review the conditions and risks associated with individual problem loans. In addition, various regulatory agencies and loan review consultants periodically review our loan ratings and allowance for loan losses.
	The following tables provide the activity of our allowance for loan losses and loan balances for three and nine months ended September 30, 2013 and 2012:
			Commercial			Owner -			Commercial			Construction			Residential			Consumer			Complexity			Total
						Occupied			Mortgages												Risk (1)
						Commercial
			(in thousands)
	Three months ended September 30, 2013
	Allowance for loan losses
	Beginning balance		$	12,967		$	8,049		$	6,345		$	3,952		$	3,230		$	6,137		$	814		$	41,494
	Charge-offs			(1,172	)		(31	)		(103	)		(4	)		(290	)		(1,343	)		—			(2,943	)
	Recoveries			273			55			333			21			10			219			—			911
	Provision (credit)			594			(23	)		345			(380	)		364			1,071			(2	)		1,969
	Ending balance		$	12,662		$	8,050		$	6,920		$	3,589		$	3,314		$	6,084		$	812		$	41,431
	Nine months ended September 30, 2013
	Allowance for loan losses
	Beginning balance		$	13,663		$	6,108		$	8,079		$	6,456		$	3,124		$	5,631		$	861		$	43,922
	Charge-offs			(2,311	)		(68	)		(1,824	)		(1,344	)		(985	)		(4,153	)		—		$	(10,685	)
	Recoveries			900			100			442			106			51			715			—		$	2,314
	Provision (credit)			410			1,910			223			(1,629	)		1,124			3,891			(49	)	$	5,880
	Ending balance		$	12,662		$	8,050		$	6,920		$	3,589		$	3,314		$	6,084		$	812		$	41,431
	Period-end allowance allocated to:
	Loans individually evaluated for impairment		$	2,004		$	945		$	1,995		$	—		$	995		$	12		$	—		$	5,951
	Loans collectively evaluated for impairment			10,658			7,105			4,925			3,589			2,319			6,072			812			35,480
	Ending balance		$	12,662		$	8,050		$	6,920		$	3,589		$	3,314		$	6,084		$	812		$	41,431
	Period-end loan balances evaluated for:
	Loans individually evaluated for impairment		$	5,833		$	12,568		$	8,894		$	274		$	17,360		$	4,400		$	—		$	49,329	(2)
	Loans collectively evaluated for impairment			748,106			777,297			704,895			102,347			211,595			283,645			—		$	2,827,885
	Ending balance		$	753,939		$	789,865		$	713,789		$	102,621		$	228,955		$	288,045		$	—		$	2,877,214
	-1	Represents the portion of the allowance for loan losses established to account for the inherent complexity and uncertainty of estimates.
	-2	The difference between this amount and nonaccruing loans at September 30, 2013 represents accruing troubled debt restructured loans.
	The following table provides the activity of the allowance for loan losses and loan balances for the three and nine months ended September 30, 2012:
			Commercial			Owner			Commercial			Construction			Residential			Consumer			Complexity			Total
						Occupied			Mortgages												Risk (1)
						Commercial
			(In Thousands)
	Three months ended September 30, 2012
	Allowance for loan losses
	Beginning balance		$	9,891		$	4,091		$	9,618		$	5,307		$	6,265		$	10,341		$	916		$	46,429
	Charge-offs			(1,281	)		(926	)		(709	)		(676	)		(705	)		(2,573	)		—			(6,870	)
	Recoveries			455			184			18			1,314			113			204			—			2,288
	Provision			(127	)		(4	)		(2,281	)		(810	)		2,690			4,300			(17	)		3,751
	Ending balance		$	8,938		$	3,345		$	6,646		$	5,135		$	8,363		$	12,272		$	899		$	45,598
	Nine months ended September 30, 2012
	Allowance for loan losses
	Beginning balance		$	15,067		$	9,235		$	7,556		$	4,074		$	6,544		$	10,604		$	—		$	53,080
Charge-offs			(11,316	)		(3,614	)		(5,600	)		(10,680	)		(3,344	)		(5,494	)		—			(40,048	)
Recoveries			1,305			190			382			1,642			171			497			—			4,187
Provision			3,882			(2,466	)		4,308			10,099			4,992			6,665			899			28,379
Ending balance		$	8,938		$	3,345		$	6,646		$	5,135		$	8,363		$	12,272		$	899		$	45,598
Period-end allowance allocated to:
Loans individually evaluated for impairment		$	1,244		$	222		$	90		$	94		$	1,199		$	24		$	—		$	2,873
Loans collectively evaluated for impairment			7,694			3,123			6,556			5,041			7,164			12,248			899			42,725
Ending balance		$	8,938		$	3,345		$	6,646		$	5,135		$	8,363		$	12,272		$	899		$	45,598
Period-end loan balances evaluated for:
Loans individually evaluated for impairment		$	3,579		$	13,324		$	5,875		$	2,620		$	18,072		$	6,694		$	—		$	50,164	(2)
Loans collectively evaluated for impairment			694,626			737,670			598,681			111,557			232,270			276,791			—			2,651,595
Ending balance		$	698,205		$	750,994		$	604,556		$	114,177		$	250,342		$	283,485		$	—		$	2,701,759
-1	Represents the portion of the allowance for loan losses established to account for the inherent complexity and uncertainty of estimates.
-2	The difference between this amount and nonaccruing loans at September 30, 2012, represents accruing troubled debt restructured loans.
Nonaccrual and Past Due Loans
The following tables show our nonaccrual and past due loans at the dates indicated:
September 30, 2013		30–59 Days			60–89 Days			Greater Than			Total Past			Accruing			Nonaccrual			Total
(In Thousands)		Past Due and			Past Due and			90 Days			Due			Current			Loans			Loans
		Still Accruing			Still Accruing			Past Due and			And Still			Balances
								Still Accruing			Accruing
Commercial		$	13,212		$	—		$	—		$	13,212		$	735,077		$	5,650		$	753,939
Owner-Occupied commercial			6,474			—			—			6,474			770,823			12,568			789,865
Commercial mortgages			22			—			—			22			705,077			8,690			713,789
Construction			—			—			—			—			102,347			274			102,621
Residential			3,672			1,073			658			5,403			215,113			8,439			228,955
Consumer			1,138			468			—			1,606			283,890			2,549			288,045
Total		$	24,518		$	1,541		$	658		$	26,717		$	2,812,327		$	38,170		$	2,877,214
% of Total Loans			0.85	%		0.06	%		0.02	%		0.93	%		97.74	%		1.33	%		100	%
December 31, 2012		30–59 Days			60–89 Days			Greater Than			Total Past			Accruing			Nonaccrual			Total
(In Thousands)		Past Due and			Past Due and			90 Days			Due			Current			Loans			Loans
		Still Accruing			Still Accruing			Past Due and			And Still			Balances
								Still Accruing			Accruing
Commercial		$	1,214		$	—		$	—		$	1,214		$	698,416		$	4,861		$	704,491
Owner-Occupied commercial			1,264			—			—			1,264			755,316			14,001			770,581
Commercial mortgages			—			—			—			—			618,731			12,634			631,365
Construction			269			70			—			339			131,489			1,547			133,375
Residential			5,383			606			786			6,775			226,863			9,989			243,627
Consumer			971			526			—			1,497			282,776			4,728			289,001
Total		$	9,101		$	1,202		$	786		$	11,089		$	2,713,591		$	47,760		$	2,772,440
% of Total Loans			0.33	%		0.04	%		0.03	%		0.4	%		97.88	%		1.72	%		100	%
Impaired Loans
The following tables provide an analysis of our impaired loans at September 30, 2013 and December 31, 2012:
September 30, 2013		Ending			Loans with			Loans with			Related			Contractual			Average
(In Thousands)		Loan			No  Specific			Specific			Specific			Principal			Loan
		Balances			Reserve (1)			Reserve			Reserve			Balances			Balances
Commercial		$	5,833		$	2,288		$	3,545		$	2,004		$	13,728		$	5,062
Owner-Occupied commercial			12,568			5,723			6,845			945			14,911			13,167
Commercial mortgages			8,894			2,896			5,998			1,995			19,494			9,887
Construction			274			274			—			—			16,012			1,261
Residential			17,360			9,680			7,680			995			19,726			18,091
Consumer			4,400			4,272			128			12			5,091			5,712
Total		$	49,329		$	25,133		$	24,196		$	5,951		$	88,962		$	53,180
December 31, 2012		Ending			Loans with			Loans with			Related			Contractual			Average
(In Thousands)		Loan			No Specific			Specific			Specific			Principal			Loan
		Balances			Reserve (1)			Reserve			Reserve			Balances			Balances
Commercial		$	4,861		$	1,598		$	3,263		$	2,100		$	12,060		$	4,993
Owner-Occupied commercial			14,001			13,827			174			1			18,658			16,856
Commercial mortgages			12,634			5,422			7,212			1,887			22,192			10,233
Construction			1,547			1,172			375			28			17,711			11,239
Residential			18,483			11,053			7,430			919			20,771			16,917
Consumer			6,329			5,635			694			16			7,265			4,514
Total		$	57,855		$	38,707		$	19,148		$	4,951		$	98,657		$	64,752
-1	Reflects loan balances at their remaining book balance.
Interest income of $234,000 and $706,000 was recognized on impaired loans during the three and nine months ended September 30, 2013, respectively.
Credit Quality Indicators
Below is a description of each of our risk ratings for all commercial loans:
Pass. These borrowers presently show no current or potential problems and their loans are considered fully collectible.
Special Mention. Borrowers have potential weaknesses that deserve management’s close attention. Borrowers in this category may be experiencing adverse operating trends, for example, declining revenues or margins, high leverage, tight liquidity, or increasing inventory without increasing sales. These adverse trends can have a potential negative effect on the borrower’s repayment capacity. These assets are not adversely classified and do not expose the Bank to significant risk that would warrant a more severe rating. Borrowers in this category may also be experiencing significant management problems, pending litigation, or other structural credit weaknesses.
Substandard. Borrowers have well-defined weaknesses that require extensive oversight by management. Borrowers in this category may exhibit one or more of the following: inadequate debt service coverage, unprofitable operations, insufficient liquidity, high leverage, and weak or inadequate capitalization. Relationships in this category are not adequately protected by the sound financial worth and paying capacity of the obligor or the collateral pledged on the loan, if any. The distinct possibility exists that the Bank will sustain some loss if the deficiencies are not corrected.
Doubtful. Borrowers have well-defined weaknesses inherent in the Substandard category with the added characteristic that the possibility of loss is extremely high. Current circumstances in the credit relationship make collection or liquidation in full highly questionable. A doubtful asset has some pending event that may strengthen the asset that defers the loss classification. Such impending events include: perfecting liens on additional collateral, obtaining collateral valuations, an acquisition or liquidation preceding, proposed merger, or refinancing plan.
Loss. Borrowers are uncollectible or of such negligible value that continuance as a bankable asset is not supportable. This classification does not mean that the asset has absolutely no recovery or salvage value, but rather that it is not practical to defer writing off this asset even though partial recovery may be recognized sometime in the future.
Residential and Consumer Loans
The residential and consumer loan portfolios are monitored on an ongoing basis using delinquency information and loan type as credit quality indicators. These credit quality indicators are assessed in the aggregate in these relatively homogeneous portfolios. Loans that are greater than 90 days past due are generally considered nonperforming and placed in nonaccrual status.
The following tables provide an analysis of problem loans, by credit risk profile using internally assigned risk ratings, as of September 30, 2013 and December 31, 2012
								Owner-Occupied						Commercial												Total
		Commercial						Commercial						Mortgages						Construction						Commercial
																										September 30,					December 31,
		Sept. 30			Dec. 31			Sept. 30			Dec. 31			Sept. 30			Dec. 31			Sept. 30			Dec. 31			2013					2012
		2013			2012			2013			2012			2013			2012			2013			2012			Amount		%			Amount		%
Risk Rating:
Special mention		$	17,148		$	14,611		$	15,433		$	27,398		$	9,239		$	29,267		$	1,567		$	2,453		$	43,387				$	73,729
Substandard:
Accrual			58,944			63,074			38,792			44,899			6,156			6,222			2,907			5,755			106,930					119,950
Nonaccrual			2,105			1,598			5,723			13,827			2,896			5,422			274			1,172			10,902					22,019
Doubtful / Nonaccrual			3,545			3,263			6,845			174			5,998			7,212			—			375			16,280					11,024
Total Special
Mention, Substandard and Doubtful			81,742			82,546			66,793			86,298			24,289			48,123			4,748			9,755			177,499		8	%		226,722		10	%
Pass			672,197			621,945			723,072			684,283			689,500			583,242			97,873			123,620			2,182,715		92	%		2,013,090		90
Total Commercial Loans		$	753,939		$	704,491		$	789,865		$	770,581		$	713,789		$	631,365		$	102,621		$	133,375		$	2,360,214		100	%	$	2,239,812		100	%
Consumer credit exposure credit risk profile based on payment activity (dollars in thousands):
		Residential						Consumer						Total Residential and Consumer
		Sept. 30			Dec. 31			Sept. 30			Dec. 31			September 30, 2013						December 31, 2012
		2013			2012			2013			2012			Amount			Percent			Amount			Percent
Nonperforming (1)		$	17,360		$	18,483		$	4,401		$	6,329		$	21,761			4	%	$	24,812			5	%
Performing			211,595			225,144			283,644			282,672			495,239			96	%		507,816			95
Total		$	228,955		$	243,627		$	288,045		$	289,001		$	517,000			100	%	$	532,628			100	%
-1	Includes $10.8 million as of September 30, 2013 and 10.1 million as of December 31, 2012 of troubled debt restructured mortgages and home equity installment loans that are performing in accordance with modified terms and are accruing interest.
Troubled Debt Restructurings (TDR)
The balance of TDRs at September 30, 2013 and December 31, 2012 was $26.6 million and $22.0 million, respectively. The balance at September 30, 2013 included approximately $15.5 million in nonaccrual status and $11.1 million in accrual status compared to $11.9 million in nonaccrual status and $10.1 million in accrual status at December 31, 2012. Approximately $1.0 million and $936,000 in related reserves have been established for these loans at September 30, 2013 and December 31, 2012, respectively.
During the nine months ended September 30, 2013, the terms of 21 loans were modified in TDRs, 5 of which were commercial loans that had already been placed on nonaccrual. The remaining loans represented residential and consumer loans. Our concessions on restructured loans consisted mainly of forbearance agreements, reduction in interest rates or extensions of maturities. Principal balances are generally not forgiven by us when a loan is modified as a TDR. Nonaccruing restructured loans remain in nonaccrual status until there has been a period of sustained repayment performance, typically six months.
The following table presents loans identified as TDRs during the three and nine months ended September 30, 2013 and 2012:
		Three			Three			Nine			Nine
		Months Ended			Months Ended			Months Ended			Months Ended
		September 30,			September 30,			September 30,			September 30,
(In Thousands)		2013			2012			2013			2012
Commercial		$	6,800		$	710		$	6,824		$	9,986
Commercial mortgages			108			—			1,169			—
Construction			—			—			—			378
Residential			207			2,779			806			4,170
Consumer			256			2,165			973			2,312
Total		$	7,371		$	5,654		$	9,772		$	16,846
The TDRs described in the table above increased our allowance for loan losses by $37,000 through allocation of a related reserve, and resulted in charge-offs of $363,000 during the nine months ended September 30, 2013, compared to increased reserves of $357,000 and charge-offs of $8.1 million for the same period of 2012.
There was one residential TDR in the amount of $130,000 which defaulted (defined as past due 90 days) during the three and nine months ended September 30, 2013, that was restructured within the last twelve months prior to September 30, 2013.

Reverse_Mortgage_Loans_and_Rel

Reverse Mortgage Loans and Related Assets and Liabilities	9 Months Ended
	Sep. 30, 2013
Mortgage Banking [Abstract]	'
Reverse Mortgage Loans and Related Assets and Liabilities	'
	5. REVERSE MORTGAGE LOANS AND RELATED ASSETS AND LIABILITIES
	Reverse mortgage loans are contracts in which a homeowner borrows against the equity in his/her home and receives cash in one lump sum payment, a line of credit, fixed monthly payments for either a specific term or for as long as the homeowner lives in the home, or a combination of these options. Since reverse mortgages are nonrecourse obligations, the loan repayments are generally limited to the sale proceeds of the borrower’s residence and the mortgage balance consists of cash advanced, interest compounded over the life of the loan and some may include a premium which represents a portion of the shared appreciation in the home’s value, if any, or a percentage of the value of the residence.
	In 1993, we acquired a pool of reverse mortgages from the FDIC and another lender. In 1994, we purchased Providential Home Income Plan, Inc., a California-based reverse mortgage lender. In November 2002, substantially the entire WSFS reverse mortgage portfolio was sold. In addition to cash payment for the loans, we received $10 million in BBB rated mortgage-backed securities (Class B) which we classified as trading and an option to acquire up to 49.9% of the Class “O” certificates issued in connection with mortgage-backed securities by SASCO 2002 RM-1 (“SASCO”). These mortgage-backed securities were part of a larger issuance of securities backed, in part, by the sold reverse mortgages. Subsequently we negotiated to purchase 100% of the SASCO Class “O” certificates for $2.5 million. This transaction closed in July, 2011.
	During the third quarter of 2013, we obtained the right to execute a clean-up call on the underlying collateral. This event triggered us to consolidate the assets and liabilities of the securitization trust, SASCO on our balance sheet in accordance with ASC 810, Consolidation. As a result, we consolidated $40.5 million of reverse mortgage loans, $5.8 million of cash, $885,000 of MBS and $38.8 million of debt all at fair value. Our existing investment in reverse mortgages was combined with the consolidated reverse mortgage loans for a total of $40.1 million at September 30, 2013. The average loan-to-value for these loans is approximately 45%, the average age of the borrowers is 92 years old and there is, in the view of management, significant overcollateralization in the portfolio.
	The value of the reverse mortgages is calculated by a third party model that uses the income approach as described in ASC 820-10-35-32. The model is a present value cash flow model, consistent with ASC 820-10-55-5 which describes the components of a present value measurement. The model incorporates the projected cash flows of the notes (including payouts and collections) and then discounts these cash flows using a rate that is commensurate with the risk adjusted rate. The inputs to the model reflect our expectations of what other market participants would use in pricing this asset in a current transaction and therefore is consistent with ASC 820 that requires an exit price methodology for determining fair value.
	To value these securities as of September 30, 2013 we used a proprietary model and actual cash flow information to estimate future cash flows. There are three main drivers of cash flows: 1) Prepayments; 2) House Price Appreciation (HPA) forecasts and 3) Interest Rates.
		1)	Prepayments – “one year look-back” comparing the actual cash flows to the forecasted cash flows based on the assumptions used. The base case prepayment represents the average payoff rates for proprietary reverse mortgages by borrower age, using approximately ten years of historical data. We have used 50% of the base case forecasted cash flows to reflect recent prepayment activity.
		2)	House Price Appreciation – Consistent with other reverse mortgage analyses from various market sources, we forecast a 2% decline in housing prices in the next year and a 2% recovery in the following year. We believe this forecast continues to be appropriate given the nature of reverse mortgage collateral and historical under-performance to the broad housing market.
		3)	Interest Rates –As of September 30, 2013 the forward rates on one month LIBOR are consistent with the assumptions used for future interest rates (one month LIBOR ramping up to 3% over ten years).
	The net present value of the projected cash flow depends on the discount rate used. We use a discount rate of 18.7% in valuing expected net cash flows. If the discount rate was decreased by 1%, the net present value would increase by $890,000. If the discount rate was increased by 1%, the net present value would decrease by $850,000.
	The fair values listed above are estimates that are subject to adjustments. However, while they are not expected to be materially different than those shown, any material adjustments to the estimates will be reflected, retroactively, as of the date of the transaction.

Taxes_on_Income

Taxes on Income	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Taxes on Income	'
	6. TAXES ON INCOME
	We account for income taxes in accordance with FASB ASC 740, Income Taxes (“ASC 740”) (Formerly SFAS No. 109, Accounting for Income Taxes and FASB Interpretation No. 48, Accounting for Uncertainty In Income Taxes, an Interpretation of FASB Statement 109). ASC 740 requires the recording of deferred income taxes that reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. We exercise significant judgment in the evaluation of the amount and timing of the recognition of the resulting tax assets and liabilities. The judgments and estimates required for the evaluation are updated based upon changes in business factors and the tax laws. If actual results differ from the assumptions and other considerations used in estimating the amount and timing of tax recognized, there can be no assurance that additional expenses will not be required in future periods.
	As a result of the consolidation for accounting purposes of the SASCO reverse mortgage securitization trust during the third quarter of 2013, a deferred tax asset (“DTA”) of approximately $6.7 million was recorded. However, because SASCO is not consolidated for income tax purposes, a full valuation allowance was also recorded on this DTA due to the uncertainty of its realization, as realization is dependent on future taxable income, which is anticipated upon consolidation for income tax purposes. We are taking steps to unwind the SASCO tax structure which will permit tax consolidation, at which point the uncertainty surrounding the realization of the DTA will be eliminated. Accordingly, if and when we complete this restructuring, we expect to remove the $6.7 million valuation allowance which will result in an income tax benefit through earnings.
	ASC 740 prescribes a minimum probability threshold that a tax position must meet before a financial statement benefit is recognized. We recognize, when applicable, interest and penalties related to unrecognized tax benefits in the provision for income taxes in the financial statements. Assessment of uncertain tax positions under ASC 740 requires careful consideration of the technical merits of a position based on our analysis of tax regulations and interpretations.
	There were no unrecognized tax benefits as of December 31, 2012. We record interest and penalties on potential income tax deficiencies as income tax expense. Our federal and state tax returns for the 2009 through 2012 tax years are subject to examination as of September 30, 2013. During the current quarter, the audit of our 2010 federal tax return was completed by the Internal Revenue Service. We recorded a $200,000 tax benefit as a result of settling this audit. No state income tax return examinations are currently in process.

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Segment Information	'
	7. SEGMENT INFORMATION
	In accordance with FASB ASC 280, Segment Reporting (“ASC 280”) (Formerly SFAS No. 131, Disclosures About Segments of an Enterprise and Related Information) we discuss our business in three segments. There is one segment for each of WSFS Bank, Cash Connect, (the ATM division of WSFS Bank), and Trust and Wealth Management.
	The WSFS Bank segment provides financial products to commercial and retail customers through its 51 offices located in Delaware (41), Pennsylvania (8) and Virginia (1) and Nevada (1). Retail and Commercial Banking, Commercial Real Estate Lending and other banking business units are operating departments of WSFS. These departments share the same regulator, the same market, many of the same customers and provide similar products and services through the general infrastructure of the Bank. Because of these and other reasons, these departments are not considered discrete segments and are appropriately aggregated within the WSFS Bank segment in accordance with ASC 280.
	Cash Connect provides turnkey ATM services through strategic partnerships with several of the largest networks, manufacturers and service providers in the ATM industry. The balance sheet category “Cash in non-owned ATMs” includes cash from which fee income is earned through bailment arrangements with customers of Cash Connect.
	The Wealth Management division provides a broad array of fiduciary, investment management, credit and deposit products to clients through four businesses. WSFS Investment Group, Inc. provides insurance and brokerage products primarily to our retail banking clients. Cypress Capital Management, LLC is a registered investment advisor with over $609 million in assets under management. Cypress’ primary market segment is high net worth individuals, offering a ‘balanced’ investment style focused on preservation of capital and current income. Christiana Trust, with $8.1 billion in assets under administration, provides fiduciary and investment services to personal trust clients, and trustee, agency, custodial and commercial domicile services to corporate and institutional clients. WSFS Private Banking serves high net worth clients by delivering credit and deposit products and partnering with Cypress, Christiana and WSFS Investment Group to deliver investment management and fiduciary products and services.
	An operating segment is a component of an enterprise that engages in business activities from which it may earn revenues and incur expenses, whose operating results are regularly reviewed by the enterprise’s chief operating decision makers to make decisions about resources to be allocated to the segment and assess its performance, and for which discrete financial information is available. We evaluate performance based on pretax ordinary income relative to resources used, and allocate resources based on these results. The accounting policies applicable to our segments are those that apply to our preparation of the accompanying Consolidated Financial Statements. Segment information for the three and nine months ended September 30, 2013 and 2012 follows:
	For the three months ended September 30, 2013
	Statement of Operations	WSFS Bank		Cash Connect		Trust &			Total
						Wealth
						Management
		(In Thousands)
	External customer revenues:
	Interest income	$	35,171	$	—	$	1,945		$	37,116
	Noninterest income		12,449		6,360		3,933			22,742
	Total external customer revenues		47,620		6,360		5,878			59,858
	Inter-segment revenues:
	Interest income		906		—		1,477			2,383
	Noninterest income		1,689		222		28			1,939
	Total inter-segment revenues		2,595		222		1,505			4,322
	Total revenue		50,215		6,582		7,383			64,180
	External customer expenses:
	Interest expense		3,587		—		123			3,710
	Noninterest expenses		26,510		3,470		2,829			32,809
	Provision for loan loss		2,263		—		(294	)		1,969
	Total external customer expenses		32,360		3,470		2,658			38,488
	Inter-segment expenses
	Interest expense		1,477		400		506			2,383
	Noninterest expenses		250		561		1,128			1,939
	Total inter-segment expenses		1,727		961		1,634			4,322
	Total expenses		34,087		4,431		4,292			42,810
	Income before taxes	$	16,128	$	2,151	$	3,091		$	21,370
	Provision for income taxes									7,210
	Consolidated net income								$	14,160
	Capital expenditures	$	460	$	131	$	—		$	591
	As of September 30, 2013
	Statement of Condition
	Cash and cash equivalents	$	76,785	$	422,544	$	3,116		$	502,445
	Other segment assets		3,756,277		1,995		181,939			3,940,211
	Total segment assets	$	3,833,062	$	424,539	$	185,055		$	4,442,656
	For the three months ended September 30, 2012
	Statement of Operations	WSFS Bank		Cash Connect		Trust & Wealth			Total
						Management
		(In Thousands)
	External customer revenues:
	Interest income	$	34,475	$	—	$	2,039		$	36,514
	Noninterest income		11,686		4,707		3,355			19,748
	Total external customer revenues		46,161		4,707		5,394			56,262
	Inter-segment revenues:
	Interest income		944		—		1,358			2,302
	Noninterest income		2,122		148		24			2,294
	Total inter-segment revenues		3,066		148		1,382			4,596
	Total revenue		49,227		4,855		6,776			60,858
	External customer expenses:
	Interest expense		5,377		—		244			5,621
	Noninterest expenses		27,300		2,113		2,740			32,153
	Provision for loan loss		2,997		—		754			3,751
	Total external customer expenses		35,674		2,113		3,738			41,525
	Inter-segment expenses
	Interest expense		1,358		338		606			2,302
	Noninterest expenses		172		586		1,536			2,294
	Total inter-segment expenses		1,530		924		2,142			4,596
	Total expenses		37,204		3,037		5,880			46,121
	Income (loss) before taxes	$	12,023	$	1,818	$	896		$	14,737
Provision for income taxes									4,758
Consolidated net income								$	9,979
Capital expenditures	$	1,289	$	311	$	3		$	1,603
As of December 31, 2012
Statement of Condition
Cash and cash equivalents	$	68,419	$	430,382	$	2,086		$	500,887
Other segment assets		3,683,073		1,605		189,583			3,874,261
Total segment assets	$	3,751,492	$	431,987	$	191,669		$	4,375,148
For the nine months ended September 30, 2013
Statement of Operations	WSFS		Cash		Trust &			Total
	Bank		Connect		Wealth
					Management
	(In Thousands)
External customer revenues:
Interest income	$	102,732	$	—	$	5,857		$	108,589
Noninterest income		31,009		17,412		11,934			60,355
Total external customer revenues		133,741		17,412		17,791			168,944
Inter-segment revenues:
Interest income		2,723		—		4,276			6,999
Noninterest income		5,040		645		82			5,767
Total inter-segment revenues		7,763		645		4,358			12,766
Total revenue		141,504		18,057		22,149			181,710
External customer expenses:
Interest expense		11,120		—		427			11,547
Noninterest expenses		79,671		9,629		9,031			98,331
Provision for loan loss		6,044		—		(164	)		5,880
Total external customer expenses		96,835		9,629		9,294			115,758
Inter-segment expenses
Interest expense		4,276		1,176		1,547			6,999
Noninterest expenses		727		1,649		3,391			5,767
Total inter-segment expenses		5,003		2,825		4,938			12,766
Total expenses		101,838		12,454		14,232			128,524
Income (loss) before taxes	$	39,666	$	5,603	$	7,917		$	53,186
Provision for income taxes									18,378
Consolidated net income								$	34,808
Capital expenditures	$	1,505	$	591	$	—		$	2,096
For the nine months ended September 30, 2012
Statement of Operations	WSFS Bank		Cash		Trust &			Total
			Connect		Wealth
					Management
	(In Thousands)
External customer revenues:
Interest income	$	107,199	$	—	$	6,301		$	113,500
Noninterest income		42,238		13,254		10,006			65,498
Total external customer revenues		149,437		13,254		16,307			178,998
Inter-segment revenues:
Interest income		3,099		—		4,344			7,443
Noninterest income		6,368		568		79			7,015
Total inter-segment revenues		9,467		568		4,423			14,458
Total revenue		158,904		13,822		20,730			193,456
External customer expenses:
Interest expense		17,330		—		669			17,999
Noninterest expenses		81,267		6,628		8,264			96,159
Provision for loan loss		26,786		—		1,593			28,379
Total external customer expenses		125,383		6,628		10,526			142,537
Inter-segment expenses
Interest expense		4,344		1,008		2,091			7,443
Noninterest expenses		647		1,711		4,657			7,015
Total inter-segment expenses		4,991		2,719		6,748			14,458
Total expenses		130,374		9,347		17,274			156,995
Income (loss) before taxes	$	28,530	$	4,475	$	3,456		$	36,461
Provision for income taxes									12,708
Consolidated net income								$	23,753
Capital expenditures	$	5,406	$	321	$	20		$	5,747

Fair_Value_Disclosures_of_Fina

Fair Value Disclosures of Financial Assets and Liabilities	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures of Financial Assets and Liabilities	'
	8. FAIR VALUE DISCLOSURES OF FINANCIAL ASSETS AND LIABILITIES
	FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES
	ASC 820-10, Fair Value Measurements and Disclosure, defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820-10 establishes a fair value hierarchy that prioritizes the use of inputs used in valuation methodologies into the following three levels:
	Level 1: Inputs to the valuation methodology are quoted prices, unadjusted, for identical assets or liabilities in active markets. A quoted price in an active market provides the most reliable evidence of fair value and shall be used to measure fair value whenever available.
	Level 2: Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets; inputs to the valuation methodology include quoted prices for identical or similar assets or liabilities in markets that are not active; or inputs to the valuation methodology that are derived principally from or can be corroborated by observable market data by correlation or other means.
	Level 3: Inputs to the valuation methodology are unobservable and significant to the fair value measurement. Level 3 assets and liabilities include financial instruments whose value is determined using discounted cash flow methodologies, as well as instruments for which the determination of fair value requires significant management judgment or estimation.
	A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below.
	The table below presents the balances of assets measured at fair value as of September 30, 2013 (there were no material liabilities measured at fair value):
		Quoted				Significant				Significant				Total
		Prices in				Other				Unobservable
		Active				Observable				Inputs
		Markets for				Inputs
		Identical
		Asset
	Description	(Level 1)				(Level 2)				(Level 3)				Fair Value
		(in Thousands)
	Assets Measured at Fair Value on a Recurring Basis
	Available-for-sale securities:
	Collateralized mortgage obligations	$	—			$	108,470			$	—			$	108,470
	FNMA		—				368,249				—				368,249
	FHLMC		—				106,123				—				106,123
	GNMA		—				98,954				—				98,954
	U.S. Government and agencies		—				41,798				—				41,798
	State and political subdivisions		—				83,332				—				83,332
	Total assets measured at fair value on a recurring basis	$	—			$	806,926			$	—			$	806,926
	Liabilities Measured at Fair Value on a nonrecurring Basis
	Bonds payable	$	—			$	26,340			$	—			$	26,340
	Assets Measured at Fair Value on a Nonrecurring Basis
	Other real estate owned	$	—			$	—			$	7,163			$	7,163
	Reverse mortgage loans		—				—				40,095				40,095
	Impaired loans (collateral dependent)		—				—				43,379				43,379
	Total assets measured at fair value on a nonrecurring basis	$	—			$	—			$	90,637			$	90,637
	The table below presents the balances of assets measured at fair value as of December 31, 2012 (there are no material liabilities measured at fair value):
		Quoted				Significant				Significant				Total
		Prices in				Other				Unobservable
		Active				Observable				Inputs
		Markets for				Inputs
		Identical
		Asset
	Description	(Level 1)				(Level 2)				(Level 3)				Fair Value
		(in Thousands)
	Assets Measured at Fair Value on a Recurring Basis
	Available-for-sale securities:
	Collateralized mortgage obligations	$	—			$	252,300			$	7,096			$	259,396
	FNMA		—				406,255				—				406,255
	FHLMC		—				59,650				—				59,650
	GNMA		—				132,455				—				132,455
	U.S. Government and agencies		—				46,990				—				46,990
	State and political subdivisions		—				3,209				—				3,209
	Reverse mortgage loans		—				—				(457	)			(457	)
	Trading Securities		—				—				12,590				12,590
	Total assets measured at fair value on a recurring basis	$	—			$	900,859			$	19,229			$	920,088
	Assets Measured at Fair Value on a Nonrecurring Basis
	Other real estate owned	$	—			$	—			$	4,622			$	4,622
	Impaired loans		—				—				52,904				52,904
	Total assets measured at fair value on a nonrecurring basis	$	—			$	—			$	57,526			$	57,526
	Fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models or obtained from third parties that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include unobservable parameters. Our valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While we believe our valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.
	Available-for-sale securities. As of September 30, 2013, securities classified as available-for-sale were reported at fair value using both Level 2 and Level 3 inputs. Included in the Level 2 total were approximately $41.8 million in Federal Agency debentures, $681.8 million in Federal Agency MBS, and $83.3 million in municipal bonds. Agency and MBS securities were predominately AAA-rated. We believe that this Level 2 designation is appropriate for these securities under FASB ASC 820-10 as, with almost all fixed income securities, none are exchange traded, and all are priced by correlation to observable market data. For these securities we obtain fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, U.S. government and agency yield curves, live trading levels, trade execution data, market consensus prepayment speeds, credit information, and the security’s terms and conditions, among other factors. Included in the Level 3 total at December 31, 2012, was a small equity tranche of a reverse mortgage security purchased on July 15, 2011. This security was Level 3 because there was no active market for this security and no observable inputs that reflected quoted prices for identical assets in active markets (Level 1) or inputs other than quoted prices that were observable for the asset through corroboration with observable market data (Level 2). In order to establish the fair value for a Level 3 asset a “mark-to-model” was developed using the income approach described in FASB ASC 820-10-35-32 and was similar to the methodology used to value our trading securities described below. As of September 30, 2013, we consolidated the assets and liabilities of the securitization trust which resulted in these securities are being eliminated in consolidation. For additional information regarding these transactions, see Note 5, Reverse Mortgages and Related Assets and the discussion of reverse mortgages in this section.
	Trading securities. The amount included in the trading securities category at December 31, 2012 represented the fair value of a BBB-rated tranche of a reverse mortgage security. There was never an active market for these securities. As such, we classified these trading securities as Level 3 under FASB ASC 820-10. As prescribed by FASB ASC 820-10 management used various observable and unobservable inputs to develop a range of likely fair value prices where this security would be exchanged in an orderly transaction between market participants at the measurement date. The unobservable inputs reflected management’s assumptions about the assumptions that market participants would use in pricing this asset. Included in these inputs were the median of a selection of other BBB-rated securities as well as quoted market prices from higher rated tranches of this asset class. The unobservable inputs consisted of prepayments, house price appreciation and interest rates. Management completed a sensitivity analysis at December 31, 2012 which showed any increase or decrease in these inputs would not have had a significant impact on the fair value of these assets. As a result, the value assigned to this security was determined primarily through a discounted cash flow analysis. All of these assumptions required a significant degree of management judgment. As of September 30, 2013, we consolidated the assets and liabilities of the securitization trust which resulted in these securities being completely eliminated in consolidation. For additional information regarding these transactions, see Note 5, Reverse Mortgages and Related Assets and the discussion of reverse mortgages in this section.
	Reverse Mortgages. Reverse mortgage loans are valued using a present value cash flow model that incorporates the projected cash flows of the notes (including payouts and collections) and then discounts these cash flows using a rate that is commensurate with the risk adjusted rate. The inputs to the model reflect our expectations of what other market participants would use in pricing these assets in a current transaction. Due to the significant amount of management judgment and the unobservable input calculations, these reverse mortgages have been classified as Level 3. For additional information regarding these transactions, see Note 5, Reverse Mortgages and Related Assets and the discussion of reverse mortgages in this section.
	The changes in Level 3 assets measured at fair value on a recurring basis are summarized as follows:
										Available-
		Trading				Reverse				for-sale
	Securities				Mortgages				Securities				Total
(In Thousands)
Balance at December 31, 2011	$	12,432			$	(646	)		$	3,936			$	15,722
Total net income for the period included in net income		33				12				—				45
Purchases, sales, issuances, and settlements, net		—				177				—				177
Mark-to-market adjustment		125				—				3,160				3,285
Balance at December 31, 2012	$	12,590			$	(457	)		$	7,096			$	19,229
Mark-to-market adjustment		(125	)			—				—				(125	)
Reverse mortgage securitization trust consolidation		(12,465	)			457				(7,096	)			(19,104	)
Balance at September 30, 2013	$	—			$	—			$	—			$	—
Other real estate owned. Other real estate owned consists of loan collateral which has been repossessed through foreclosure or other measures. Initially, foreclosed assets are recorded as held for sale at the lower of the loan balance or fair value of the collateral less estimated selling costs. Subsequent to foreclosure, valuations are updated periodically and the assets may be marked down further, reflecting a new cost basis. The fair value of our real estate owned was estimated using Level 3 inputs based on appraisals obtained from third parties.
Impaired loans. We evaluate and value 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 us. 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.
Impaired loans, which are measured for impairment using the fair value of the collateral for collateral dependent loans, had a net amount of $43.4 million and $52.9 million at September 30, 2013 and December 31, 2012, respectively. The valuation allowance on impaired loans was $6.0 million as of September 30, 2013and $5.0 million as of December 31, 2012.
FAIR VALUE OF FINANCIAL INSTRUMENTS
The reported fair values of financial instruments are based on a variety of factors. In certain cases, fair values represent quoted market prices for identical or comparable instruments. In other cases, fair values have been estimated based on assumptions regarding the amount and timing of estimated future cash flows that are discounted to reflect current market rates and varying degrees of risk. Accordingly, the fair values may not represent actual values of the financial instruments that could have been realized as of period-end or that will be realized in the future.
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 Short-Term Investments: For cash and short-term investments, including due from banks, federal funds sold, securities purchased under agreements to resell and interest-bearing deposits with other banks, the carrying amount is a reasonable estimate of fair value.
Investments and Mortgage-Backed Securities: Since quoted market prices are not available, fair value is estimated using quoted prices for similar securities, which we obtain from a third party vendor. We utilize one of the largest providers of securities pricing to the industry and management periodically assesses the inputs used by this vendor to price the various types of securities owned by us to validate the vendor’s methodology. The fair value of our investment in reverse mortgages is based on the net present value of estimated cash flows, which have been updated to reflect recent external appraisals of the underlying collateral. For additional discussion of our mortgage-backed securities-trading or our internally developed models, see “Fair Value of Financial Assets” in Note 7 to the Consolidated Financial Statements.
Loans held-for-sale: Loans held-for-sale are carried at the lower of cost or market of the aggregate, or in some cases, individual loans.
Loans: Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type: commercial, commercial mortgages, construction, residential mortgages and consumer. For loans that reprice frequently, the book value approximates fair value. The fair values of other types of loans are estimated by discounting expected cash flows using the current rates at which similar loans would be made to borrowers with comparable credit ratings and for similar remaining maturities. The fair value of nonperforming loans is based on recent external appraisals of the underlying collateral. Estimated cash flows, discounted using a rate commensurate with current rates and the risk associated with the estimated cash flows, are utilized if appraisals are not available. This technique does not contemplate an exit price.
Reverse Mortgages. Reverse mortgage loans are valued using a present value cash flow model that incorporates the projected cash flows of the notes (including payouts and collections) and then discounts these cash flows using a rate that is commensurate with the risk adjusted rate. The inputs to the model reflect our expectations of what other market participants would use in pricing these assets in a current transaction. Due to the significant amount of management judgment and the unobservable inputs in the calculations, these reverse mortgages have been classified as Level 3. For additional information regarding these transactions, see Note 5, Reverse Mortgages and Related Assets and the discussion of reverse mortgages in this section.
Bank-Owned Life Insurance: The estimated fair value approximates the book value for this investment.
Demand Deposits, Savings Deposits and Time Deposits: The fair value of demand deposits and savings deposits is determined by projecting future cash flows using an estimated economic life based on account characteristics. The resulting cash flow is discounted using rates available on alternative funding sources. The fair value of time deposits is estimated using the rate and maturity characteristics of the deposits to estimate their cash flow. The cash flow is discounted at rates for similar term wholesale funding.
Borrowed Funds: Rates currently available to us for debt with similar terms and remaining maturities are used to estimate fair value of existing debt.
Stock in the Federal Home Loan Bank of Pittsburgh: The fair value of FHLB stock is assumed to be essentially equal to its cost basis, since the stock is non-marketable but redeemable at its par value.
Bonds Payable: The fair value of bonds payable approximates the carrying value as the interest rates are based on market interest rates.
Off-Balance Sheet Instruments: The fair value of off-balance sheet instruments, including commitments to extend credit and standby letters of credit, approximates the recorded net deferred fee amounts, which are not significant. Because commitments to extend credit and letters of credit are generally not assignable by either us or the borrower, they only have value to us and the borrower.
The book value and estimated fair value of our financial instruments are as follows:
	Fair Value		September 30, 2013								December 31, 2012
	Measurement		Book Value				Fair Value				Book Value				Fair Value
(In Thousands)
Financial assets:
Cash and cash equivalents	Level 1		$	502,445			$	502,445			$	500,887			$	500,887
Investment securities	See previous table			806,926				806,926				920,088				920,088
Loans held for sale	Level 3			12,608				12,608				12,758				12,758
Loans, net	Level 3			2,829,992				2,818,832				2,723,916				2,746,001
Reverse mortgage loans	Level 3			40,095				40,095				(457	)			(457	)
Stock in Federal Home Loan Bank of Pittsburgh	Level 2			33,876				33,876				31,165				31,165
Accrued interest receivable	Level 2			9,833				9,833				9,652				9,652
Financial liabilities:
Deposits	Level 2			3,121,198				2,912,952				3,274,963				3,174,907
Borrowed funds	Level 2			874,615				874,534				637,266				638,375
Bonds Payable	Level 2			26,340				26,340				—				—
Standby letters of credit	Level 3			135				135				224				224
Accrued interest payable	Level 2			3,254				3,254				1,099				1,099

Indemnifications_and_Guarantee

Indemnifications and Guarantees	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Indemnifications and Guarantees	'
	9. INDEMNIFICATIONS AND GUARANTEES
	Secondary Market Loan Sales. Given the current interest rate environment and current customer preference for long-term fixed rate mortgages, coupled with our desire not to hold these assets in our portfolio, we generally sell newly originated fixed rate conventional, 15 to 30 year loans in the secondary market to GSEs such as FHLMC or to wholesale lenders. Loans held-for-sale are carried at the lower cost or market value of the aggregate, or in some cases, individual loans. Gains and losses on sales of loans are recognized at the time of the sale. We sometimes retain the servicing rights on residential mortgage loans sold which results in monthly service fee income. Otherwise, we sell loans with servicing released on a nonrecourse basis. Rate-locked loan commitments we intend to sell in the secondary market are accounted for as derivatives under the guidance promulgated in FASB ASC Topic 815, Derivatives and Hedging.
	We generally do not sell loans with recourse except to the extent arising from standard loan sale contract provisions covering violations of representations and warranties and, under certain circumstances first payment defaults by borrowers. These are customary repurchase provisions in the secondary market for conforming mortgage loan sales. These indemnifications may require our repurchase of the loans. Repurchases and losses are rare, and no provision is made for the losses at the time of sale. There were no such repurchases for the three and nine months ended September 30, 2013.
	Swap Guarantees. We entered into agreements with three unrelated financial institutions whereby those financial institutions entered into interest rate derivative contracts (interest rate swap transactions) with customers referred to them by us. By the terms of the agreements, those financial institutions have recourse to us for any exposure created under each swap transaction in the event the customer defaults on the swap agreement and the agreement is in a paying position to the third-party financial institution. This is a customary arrangement that allows smaller financial institutions like us to provide access to interest rate swap transactions for our customers without creating the swap ourselves. These swap guarantees are accounted for as credit derivatives under FASB ASC Topic 815, Derivatives and Hedging.
	At September 30, 2013 there were 104 variable-rate swap transactions between third party financial institutions and our customers, compared to 95 at December 31, 2012. The initial notional amount aggregated approximately $416.8 million at September 30, 2013 compared to $381.7 million at December 31, 2012. At September 30, 2013 maturities ranged from approximately six months to 11 years. The aggregate market value of these swaps to customers was a liability of $24.2 million at September 30, 2013 and $35.5 million at December 31, 2012.

Associate_Employee_Benefit_Pla

Associate (Employee) Benefit Plans	9 Months Ended
	Sep. 30, 2013
Compensation And Retirement Disclosure [Abstract]	'
Associate (Employee) Benefit Plans	'
	10. ASSOCIATE (EMPLOYEE) BENEFIT PLANS
	Postretirement Benefits
	We share certain costs of providing health and life insurance benefits to retired Associates (and their eligible dependents). Substantially all Associates may become eligible for these benefits if they reach normal retirement age while working for us.
	We account for our obligations under the provisions of FASB ASC 715, Compensation – Retirement Benefits (“ASC 715”). ASC 715 requires the costs of these benefits be recognized over an Associate’s active working career. Disclosures are in accordance with ASC 715.
	The following disclosures of the net periodic benefit cost components of postretirement benefits were measured at January 1, 2013 and 2012:
		Three months ended				Nine months ended
		September 30,				September 30,
		2013		2012		2013		2012
	(In Thousands)
	Service cost	$	86	$	72	$	258	$	216
	Interest cost		44		44		132		131
	Amortization of transition obligation		—		15		—		45
	Net loss recognition		20		17		60		51
	Net periodic benefit cost	$	150	$	148	$	450	$	443

Change_in_Accumulated_Other_Co

Change in Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
Change in Accumulated Other Comprehensive Income	'
	11. CHANGE IN ACCUMULATED OTHER COMPREHENSIVE INCOME
	Accumulated other comprehensive income includes unrealized gains and losses on available-for-sale investments, unrealized gains and losses on interest-only strips, and unrecognized prior service costs on BOLI. Changes to other accumulated other comprehensive income are presented net of tax effect as a component of equity. Reclassification out of accumulated other comprehensive is recorded on the statement of operations either as a gain or loss.
	Changes to accumulated other comprehensive income by component are shown net of taxes in the following tables for the period indicated:
		Net unrealized
		gains on			Net unrealized
		investment			losses on defined
		securities			benefit pension
	(in thousands)	available-for-sale			plan			Total
	Balance, June 30, 2013	$	(12,309	)	$	(472	)	$	(12,781	)
	Other comprehensive loss before reclassifications		(3,106	)		—			(3,106	)
	Less: Amounts reclassified from accumulated other comprehensive loss		(190	)		—			(190	)
	Net current-period other comprehensive loss		(3,296	)		—			(3,296	)
	Balance, September 30, 2013	$	(15,605	)	$	(472	)	$	(16,077	)
	Balance, June 30, 2012	$	9,767		$	(472	)	$	9,295
	Other comprehensive income before reclassifications		9,558			—			9,558
	Less: Amounts reclassified from accumulated other comprehensive loss		(1,520	)		—			(1,520	)
	Net current-period other comprehensive loss		8,038			—			8,038
	Balance, September 30, 2012	$	17,805		$	(472	)	$	17,333
		Net unrealized
		gains on			Net unrealized
		investment			losses on defined
		securities			benefit pension
	(in thousands)	available-for-sale			plan			Total
	Balance, December 31, 2012	$	13,415		$	(472	)	$	12,943
	Other comprehensive loss before reclassifications		(27,249	)		—			(27,249	)
	Less: Amounts reclassified from accumulated other comprehensive loss		(1,771	)		—			(1,771	)
	Net current-period other comprehensive loss		(29,020	)		—			(29,020	)
	Balance, September 30, 2013	$	(15,605	)	$	(472	)	$	(16,077	)
	Balance, December 31, 2011	$	11,674		$	(472	)	$	11,202
	Other comprehensive income before reclassifications		17,165			—			17,165
	Less: Amounts reclassified from accumulated other comprehensive loss		(11,034	)		—			(11,034	)
	Net current-period other comprehensive income		6,131			—			6,131
	Balance, September 30, 2012	$	17,805		$	(472	)	$	17,333
	The statement of operations impacted by components of other comprehensive income are presented in the table below.
		Three Months Ended						Affected line item in
		September 30,						Statements of Operations
	(in thousands)	2013			2012
	Securities available-for-sale:
	Realized gains on securities transactions	$	306		$	2,451		Securities gains, net
	Income taxes		(116	)		(931	)	Income tax provision
	Net of tax	$	190		$	1,520
		Nine Months Ended						Affected line item in
		September 30,						Statements of Operations
			2013			2012
	Securities available-for-sale:
	Realized gains on securities transactions	$	2,856		$	17,797		Securities gains, net
	Income taxes		(1,085	)		(6,763	)	Income tax provision
	Net of tax	$	1,771		$	11,034

Goodwill_and_Intangibles

Goodwill and Intangibles	9 Months Ended
	Sep. 30, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangibles	'
	12. GOODWILL AND INTANGIBLES
	Our goodwill and other intangible assets are accounted for in accordance with the accounting guidance in FASB ASC Topic 350 Intangibles — Goodwill and Other.
	At December 31, 2012, we completed the Step One test of the analysis to determine potential goodwill impairment of the WSFS Bank and Trust and Wealth Management reporting units. The valuation incorporated a market-based analysis and indicated the fair values of our WSFS Bank and Trust and Wealth Management reporting units were above their carrying amounts. Therefore, in accordance with FASB ASC 350-20-35-6, the Step Two analysis was not required at that time. During the nine months ended September 30, 2013 we determined there were no events or other indicators of impairment as it relates to goodwill or other intangibles.
	FASB ASC 350, also requires that an acquired intangible asset be separately recognized if the benefit of the intangible asset is obtained through contractual or other legal rights, or if the asset can be sold, transferred, licensed, rented or exchanged, regardless of the acquirer’s intent to do so.
	During the third quarter of 2013, we completed the purchase of Array and Arrow. As a result of this transaction, we have recognized intangible assets of $2.4 million and goodwill of $4.2 million. The intangibles are mainly the result of the fair value of customer relationships and covenants not-to-compete. The fair values listed above are estimates and are subject to adjustment. However, while they are not expected to be materially different than those shown, any material adjustments to the estimates will be reflected, retroactively, as of the date of the transaction.
	The following table summarizes other intangible assets:
		Gross					Net
		Intangible		Accumulated			Intangible
		Assets		Amortization			Assets
		(In Thousands)
	September 30, 2013
	Core deposits	$	4,370	$	(2,458	)	$	1,912
	Other		7,104		(1,870	)		5,234
	Total other intangible assets	$	11,474	$	(4,328	)	$	7,146
	31-Dec-12
	Core deposits	$	4,370	$	(2,020	)	$	2,350
	Other		4,464		(1,640	)		2,824
	Total other intangible assets	$	8,834	$	(3,660	)	$	5,174
	Core deposits are amortized over their expected lives using the present value of the benefit of the core deposits and straight-line methods of amortization. During the nine months ended September 30, 2013, we recognized amortization expense on other intangible assets of $612,000.
	The following presents the estimated amortization expense of intangibles:
		Amortization
	(In Thousands)	of Intangibles
	Remaining in 2013	$	370
	2014		1,171
	2015		1,139
	2016		882
	2017		735
	Thereafter		2,849
	Total	$	7,146

Business_Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Business Combinations	'
	13. BUSINESS COMBINATIONS
	Array Financial Group, Inc. and Arrow Land Transfer Company Acquisition
	On July 31, 2013, WSFS Bank successfully completed the purchase of Array Financial Group, Inc. (Array), a Delaware Valley mortgage banking company, specializing in a variety of residential mortgage and refinancing solutions, and Arrow Land Transfer Company (Arrow), an abstract and title company that is a related entity to Array. All Array and Arrow employees are now WSFS Associates.
	These companies were acquired through an asset purchase transaction for the purchase price of $8.1 million (including a $1.4 million payment for the working capital of the two companies), $4.0 million of which will be earned through a five-year earn out based on achieved earnings contribution targets, the fair value is $2.8 million at September 30, 2013. Operating results of Array and Arrow are included in the consolidated financial statements since the date of acquisition.
	The transaction was accounted for as a business combination using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed and consideration paid were recorded at their estimated fair values as of the acquisition date. The excess of consideration paid over the fair value of net assets acquired was recorded as goodwill, which will not be amortizable for book purposes, however will be deductible for tax purposes. We allocated the total balance of goodwill to our WSFS Bank segment. We also recognized $2.4 million in intangible assets which will be amortized over 7 years utilizing the straight-line method.
	In connection with the acquisition, the following table summarizes the combined fair value of the assets and liabilities acquired:
	Consideration Paid:
	Cash paid at closing	$	5,374
	Fair value of contingent consideration		2,750
	Value of consideration		8,124
	Assets acquired:
	(In Thousands)
	Cash		1,185
	Accounts receivable		220
	Fixed assets		148
	Loans-Held-For-Sale		10,096
	Intangible assets		2,353
	Total assets		14,002
	Liabilities assumed:
	Warehouse line of credit		10,067
	Accounts payable		60
	Total Liabilities		10,127
	Net assets acquired		3,875
	Goodwill resulting from acquisition of Array and Arrow	$	4,249
	The fair values listed above are estimates and are subject to adjustment. However, while they are not expected to be materially different than those shown, any material adjustments to the estimates will be reflected retroactively, as of the date of the transaction.

Legal_Proceedings

Legal Proceedings	9 Months Ended
	Sep. 30, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Legal Proceedings	'
	14. LEGAL PROCEEDINGS
	In July 2011, we were served with a complaint, filed in U.S. Bankruptcy Court for the Eastern District of Pennsylvania, by a bankruptcy trustee relating to a former WSFS Bank customer. The complaint challenges the Bank’s actions relating to the repayment of an outstanding loan and also seeks to avoid and recover the pre-bankruptcy repayment of that loan, approximately $5.0 million. The matter has been captioned Goldstein v. Wilmington Savings Fund Society, FSB (In re: Universal Marketing, Inc.), Chapter 7, Case No. 09-15404 (ELF), Adv. Pro. No. 11-00512. We believe we acted appropriately and we are vigorously defending ourselves against the complaint.
	In July 2013, a complaint was filed against WSFS Bank and certain executives alleging that the Bank acted improperly in issuing, amending and/or collecting approximately $18.0 million in outstanding loans. The matter has been captioned Bennett v. Wilmington Savings Fund Society, FSB, Case No. 2013-08738, in the Court of Common Pleas, Montgomery County, Pennsylvania. This complaint was filed in the context of suits filed by WSFS Bank to obtain repayment and other damages relating to these same loans. We have entered into a settlement agreement to resolve these actions.
	Based upon available information we believe the estimate of the aggregate range of reasonably possible losses for all of these legal proceedings was from approximately $250,000 to approximately $5.0 million at September 30, 2013.
	Except as noted above, there are no other significant pending legal proceedings involving us other than those arising out of routine operations. We do not anticipate that the ultimate liability, if any, arising out of such other proceedings will have a material effect on the Consolidated Financial Statements.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Computation of Basic and Diluted Earnings Per Share	'
	The following table shows the computation of basic and diluted earnings per share:
		For the three months ended				For the nine months ended
		September 30,				September 30,
		2013		2012		2013		2012
		(In Thousands, Except Per Share Data)
	Numerator:
	Net income allocable to common stockholders	$	13,828	$	9,286	$	33,175	$	21,676
	Denominator:
	Denominator for basic earnings per share—weighted average shares		8,828		8,712		8,804		8,702
	Effect of dilutive employee stock options and warrants		148		83		106		77
	Denominator for diluted earnings per share – adjusted weighted average shares and assumed exercise		8,976		8,795		8,910		8,779
	Earnings per share:
	Basic:
	Net income allocable to common stockholders	$	1.57	$	1.07	$	3.77	$	2.49
	Diluted:
	Net income allocable to common stockholders	$	1.54	$	1.06	$	3.72	$	2.47
	Outstanding common stock equivalents having no dilutive effect		402		338		557		361

Investment_Securities_Tables

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2013
Investments Debt And Equity Securities [Abstract]	'
Schedule of Amortized Cost and Estimated Fair Value of Investment Securities Available-for-Sale and Trading Securities	'
	The following tables detail the amortized cost and the estimated fair value of our investment securities available-for-sale and trading securities:
			Amortized		Gross		Gross			Fair
			Cost		Unrealized		Unrealized			Value
					Gains		Losses
			(In Thousands)
	Available-for-sale securities:
	September 30, 2013:
	State and political subdivisions		$	87,987	$	224	$	(4,879	)	$	83,332
	U.S. Government and government sponsored enterprises (“GSE”)			41,670		131		(3	)		41,798
	Federal National Mortgage Association (“FNMA”) Mortgage-Backed Securities (“MBS”)			379,721		518		(11,990	)		368,249
	Collateralized Mortgage Obligation (“CMO”) (1)			112,887		169		(4,585	)		108,471
	Federal Home Loan Mortgage Corporation (“FHLMC”) MBS			109,482		38		(3,397	)		106,123
	Government National Mortgage Association (“GNMA”) MBS			100,349		1,134		(2,530	)		98,953
			$	832,096	$	2,214	$	(27,384	)	$	806,926
	31-Dec-12
	State and political subdivisions			3,120		89		—			3,209
	GSE			46,726		266		(2	)		46,990
	FNMA			396,910		9,588		(243	)		406,255
	CMO (1)			251,848		7,849		(301	)		259,396
	FHLMC			58,596		1,171		(117	)		59,650
	GNMA			129,288		3,221		(54	)		132,455
			$	886,488	$	22,184	$	(717	)	$	907,955
	Trading securities
	September 30, 2013:
	CMO		$	—	$	—	$	—		$	—
	31-Dec-12
	CMO		$	12,590	$	—	$	—		$	12,590
	-1	Includes agency CMO securities classified as available-for-sale
Schedule of Maturities of Investment Securities Available-for-Sale	'
	The scheduled maturities of investment securities available-for-sale at September 30, 2013 and December 31, 2012 were as follows:
			Available-for-Sale
			Amortized		Fair
			Cost		Value
			(In Thousands)
	September 30, 2013
	Within one year		$	22,860	$	22,932
	After one year but within five years			32,661		32,465
	After five years but within ten years			312,070		298,900
	After ten years			464,505		452,629
			$	832,096	$	806,926
	December 31, 2012
	Within one year		$	19,001	$	19,115
	After one year but within five years			28,855		29,034
	After five years but within ten years			321,103		329,580
	After ten years			517,529		530,226
			$	886,488	$	907,955
Schedule of Investment Securities' Gross Unrealized Losses and Fair Value by Investment Category	'
	For these investment securities with unrealized losses, the table below shows our gross unrealized losses and fair value by investment category and length of time that individual securities were in a continuous unrealized loss position at September 30, 2013.
			Less than 12 months				12 months or longer					Total
			Fair		Unrealized		Fair			Unrealized		Fair		Unrealized
			Value		Loss		Value			Loss		Value		Loss
			(In Thousands)
	Available-for-sale
	State and political subdivisions		$	59,470	$	4,879	$	—		$	—	$	59,470	$	4,879
	U.S Government and agencies			—		—		2,003			3		2,003		3
	FNMA			331,949		11,840		4,060			150		336,009		11,990
	CMO			99,464		4,584		1,339			1		100,803		4,585
	FHLMC			105,539		3,397		—			—		105,539		3,397
	GNMA			75,096		2,530		—			—		75,096		2,530
	Total temporarily impaired investments		$	671,518	$	27,230	$	7,402		$	154	$	678,920	$	27,384
	The table below shows our investment securities’ gross unrealized losses and fair value by investment category and length of time that individual securities were in a continuous unrealized loss position at December 31, 2012.
			Less than 12 months				12 months or longer					Total
			Fair		Unrealized		Fair			Unrealized		Fair		Unrealized
			Value		Loss		Value			Loss		Value		Loss
			(In Thousands)
	Available-for-sale
	State and political subdivisions		$	—	$	—	$	—		$	—	$	—	$	—
	U.S Government and agencies			2,008		2		—			—		2,008		2
	FNMA			43,696		243		—			—		43,696		243
	CMO			40,358		268		1,364			33		41,722		301
	FHLMC			13,884		117		—			—		13,884		117
	GNMA			10,029		54		—			—		10,029		54
	Total temporarily impaired investments		$	109,975	$	684	$	1,364		$	33	$	111,339	$	717

Allowance_for_Loan_Losses_and_1

Allowance for Loan Losses and Credit Quality Information (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Schedule of Allowance for Loan Losses and Loan Balances	'
	The following tables provide the activity of our allowance for loan losses and loan balances for three and nine months ended September 30, 2013 and 2012:
			Commercial			Owner -			Commercial			Construction			Residential			Consumer			Complexity			Total
						Occupied			Mortgages												Risk (1)
						Commercial
			(in thousands)
	Three months ended September 30, 2013
	Allowance for loan losses
	Beginning balance		$	12,967		$	8,049		$	6,345		$	3,952		$	3,230		$	6,137		$	814		$	41,494
	Charge-offs			(1,172	)		(31	)		(103	)		(4	)		(290	)		(1,343	)		—			(2,943	)
	Recoveries			273			55			333			21			10			219			—			911
	Provision (credit)			594			(23	)		345			(380	)		364			1,071			(2	)		1,969
	Ending balance		$	12,662		$	8,050		$	6,920		$	3,589		$	3,314		$	6,084		$	812		$	41,431
	Nine months ended September 30, 2013
	Allowance for loan losses
	Beginning balance		$	13,663		$	6,108		$	8,079		$	6,456		$	3,124		$	5,631		$	861		$	43,922
	Charge-offs			(2,311	)		(68	)		(1,824	)		(1,344	)		(985	)		(4,153	)		—		$	(10,685	)
	Recoveries			900			100			442			106			51			715			—		$	2,314
	Provision (credit)			410			1,910			223			(1,629	)		1,124			3,891			(49	)	$	5,880
	Ending balance		$	12,662		$	8,050		$	6,920		$	3,589		$	3,314		$	6,084		$	812		$	41,431
	Period-end allowance allocated to:
	Loans individually evaluated for impairment		$	2,004		$	945		$	1,995		$	—		$	995		$	12		$	—		$	5,951
	Loans collectively evaluated for impairment			10,658			7,105			4,925			3,589			2,319			6,072			812			35,480
	Ending balance		$	12,662		$	8,050		$	6,920		$	3,589		$	3,314		$	6,084		$	812		$	41,431
	Period-end loan balances evaluated for:
	Loans individually evaluated for impairment		$	5,833		$	12,568		$	8,894		$	274		$	17,360		$	4,400		$	—		$	49,329	(2)
	Loans collectively evaluated for impairment			748,106			777,297			704,895			102,347			211,595			283,645			—		$	2,827,885
	Ending balance		$	753,939		$	789,865		$	713,789		$	102,621		$	228,955		$	288,045		$	—		$	2,877,214
	-1	Represents the portion of the allowance for loan losses established to account for the inherent complexity and uncertainty of estimates.
	-2	The difference between this amount and nonaccruing loans at September 30, 2013 represents accruing troubled debt restructured loans.
	The following table provides the activity of the allowance for loan losses and loan balances for the three and nine months ended September 30, 2012:
			Commercial			Owner			Commercial			Construction			Residential			Consumer			Complexity			Total
						Occupied			Mortgages												Risk (1)
						Commercial
			(In Thousands)
	Three months ended September 30, 2012
	Allowance for loan losses
	Beginning balance		$	9,891		$	4,091		$	9,618		$	5,307		$	6,265		$	10,341		$	916		$	46,429
	Charge-offs			(1,281	)		(926	)		(709	)		(676	)		(705	)		(2,573	)		—			(6,870	)
	Recoveries			455			184			18			1,314			113			204			—			2,288
	Provision			(127	)		(4	)		(2,281	)		(810	)		2,690			4,300			(17	)		3,751
	Ending balance		$	8,938		$	3,345		$	6,646		$	5,135		$	8,363		$	12,272		$	899		$	45,598
	Nine months ended September 30, 2012
	Allowance for loan losses
	Beginning balance		$	15,067		$	9,235		$	7,556		$	4,074		$	6,544		$	10,604		$	—		$	53,080
	Charge-offs			(11,316	)		(3,614	)		(5,600	)		(10,680	)		(3,344	)		(5,494	)		—			(40,048	)
	Recoveries			1,305			190			382			1,642			171			497			—			4,187
	Provision			3,882			(2,466	)		4,308			10,099			4,992			6,665			899			28,379
	Ending balance		$	8,938		$	3,345		$	6,646		$	5,135		$	8,363		$	12,272		$	899		$	45,598
	Period-end allowance allocated to:
	Loans individually evaluated for impairment		$	1,244		$	222		$	90		$	94		$	1,199		$	24		$	—		$	2,873
	Loans collectively evaluated for impairment			7,694			3,123			6,556			5,041			7,164			12,248			899			42,725
	Ending balance		$	8,938		$	3,345		$	6,646		$	5,135		$	8,363		$	12,272		$	899		$	45,598
	Period-end loan balances evaluated for:
	Loans individually evaluated for impairment		$	3,579		$	13,324		$	5,875		$	2,620		$	18,072		$	6,694		$	—		$	50,164	(2)
	Loans collectively evaluated for impairment			694,626			737,670			598,681			111,557			232,270			276,791			—			2,651,595
	Ending balance		$	698,205		$	750,994		$	604,556		$	114,177		$	250,342		$	283,485		$	—		$	2,701,759
	-1	Represents the portion of the allowance for loan losses established to account for the inherent complexity and uncertainty of estimates.
	-2	The difference between this amount and nonaccruing loans at September 30, 2012, represents accruing troubled debt restructured loans.
Summary of Nonaccrual and Past Due Loans	'
	The following tables show our nonaccrual and past due loans at the dates indicated:
	September 30, 2013		30–59 Days			60–89 Days			Greater Than			Total Past			Accruing			Nonaccrual			Total
	(In Thousands)		Past Due and			Past Due and			90 Days			Due			Current			Loans			Loans
			Still Accruing			Still Accruing			Past Due and			And Still			Balances
									Still Accruing			Accruing
	Commercial		$	13,212		$	—		$	—		$	13,212		$	735,077		$	5,650		$	753,939
	Owner-Occupied commercial			6,474			—			—			6,474			770,823			12,568			789,865
	Commercial mortgages			22			—			—			22			705,077			8,690			713,789
	Construction			—			—			—			—			102,347			274			102,621
	Residential			3,672			1,073			658			5,403			215,113			8,439			228,955
	Consumer			1,138			468			—			1,606			283,890			2,549			288,045
	Total		$	24,518		$	1,541		$	658		$	26,717		$	2,812,327		$	38,170		$	2,877,214
	% of Total Loans			0.85	%		0.06	%		0.02	%		0.93	%		97.74	%		1.33	%		100	%
	December 31, 2012		30–59 Days			60–89 Days			Greater Than			Total Past			Accruing			Nonaccrual			Total
	(In Thousands)		Past Due and			Past Due and			90 Days			Due			Current			Loans			Loans
			Still Accruing			Still Accruing			Past Due and			And Still			Balances
									Still Accruing			Accruing
	Commercial		$	1,214		$	—		$	—		$	1,214		$	698,416		$	4,861		$	704,491
	Owner-Occupied commercial			1,264			—			—			1,264			755,316			14,001			770,581
	Commercial mortgages			—			—			—			—			618,731			12,634			631,365
	Construction			269			70			—			339			131,489			1,547			133,375
	Residential			5,383			606			786			6,775			226,863			9,989			243,627
	Consumer			971			526			—			1,497			282,776			4,728			289,001
	Total		$	9,101		$	1,202		$	786		$	11,089		$	2,713,591		$	47,760		$	2,772,440
	% of Total Loans			0.33	%		0.04	%		0.03	%		0.4	%		97.88	%		1.72	%		100	%
Analysis of Impaired Loans	'
	The following tables provide an analysis of our impaired loans at September 30, 2013 and December 31, 2012:
	September 30, 2013		Ending			Loans with			Loans with			Related			Contractual			Average
	(In Thousands)		Loan			No  Specific			Specific			Specific			Principal			Loan
			Balances			Reserve (1)			Reserve			Reserve			Balances			Balances
	Commercial		$	5,833		$	2,288		$	3,545		$	2,004		$	13,728		$	5,062
	Owner-Occupied commercial			12,568			5,723			6,845			945			14,911			13,167
	Commercial mortgages			8,894			2,896			5,998			1,995			19,494			9,887
	Construction			274			274			—			—			16,012			1,261
	Residential			17,360			9,680			7,680			995			19,726			18,091
	Consumer			4,400			4,272			128			12			5,091			5,712
	Total		$	49,329		$	25,133		$	24,196		$	5,951		$	88,962		$	53,180
	December 31, 2012		Ending			Loans with			Loans with			Related			Contractual			Average
	(In Thousands)		Loan			No Specific			Specific			Specific			Principal			Loan
			Balances			Reserve (1)			Reserve			Reserve			Balances			Balances
	Commercial		$	4,861		$	1,598		$	3,263		$	2,100		$	12,060		$	4,993
	Owner-Occupied commercial			14,001			13,827			174			1			18,658			16,856
	Commercial mortgages			12,634			5,422			7,212			1,887			22,192			10,233
	Construction			1,547			1,172			375			28			17,711			11,239
	Residential			18,483			11,053			7,430			919			20,771			16,917
	Consumer			6,329			5,635			694			16			7,265			4,514
	Total		$	57,855		$	38,707		$	19,148		$	4,951		$	98,657		$	64,752
	-1	Reflects loan balances at their remaining book balance.
Schedule of Customer Credit Exposure Credit Risk Profile by Internally Assigned Risk Rating	'
	The following tables provide an analysis of problem loans, by credit risk profile using internally assigned risk ratings, as of September 30, 2013 and December 31, 2012
									Owner-Occupied						Commercial												Total
			Commercial						Commercial						Mortgages						Construction						Commercial
																											September 30,					December 31,
			Sept. 30			Dec. 31			Sept. 30			Dec. 31			Sept. 30			Dec. 31			Sept. 30			Dec. 31			2013					2012
			2013			2012			2013			2012			2013			2012			2013			2012			Amount		%			Amount		%
	Risk Rating:
	Special mention		$	17,148		$	14,611		$	15,433		$	27,398		$	9,239		$	29,267		$	1,567		$	2,453		$	43,387				$	73,729
	Substandard:
	Accrual			58,944			63,074			38,792			44,899			6,156			6,222			2,907			5,755			106,930					119,950
	Nonaccrual			2,105			1,598			5,723			13,827			2,896			5,422			274			1,172			10,902					22,019
	Doubtful / Nonaccrual			3,545			3,263			6,845			174			5,998			7,212			—			375			16,280					11,024
	Total Special
	Mention, Substandard and Doubtful			81,742			82,546			66,793			86,298			24,289			48,123			4,748			9,755			177,499		8	%		226,722		10	%
	Pass			672,197			621,945			723,072			684,283			689,500			583,242			97,873			123,620			2,182,715		92	%		2,013,090		90
	Total Commercial Loans		$	753,939		$	704,491		$	789,865		$	770,581		$	713,789		$	631,365		$	102,621		$	133,375		$	2,360,214		100	%	$	2,239,812		100	%
Schedule of Consumer Credit Exposure Credit Risk Profile Based on Payment Activity	'
	Consumer credit exposure credit risk profile based on payment activity (dollars in thousands):
			Residential						Consumer						Total Residential and Consumer
			Sept. 30			Dec. 31			Sept. 30			Dec. 31			September 30, 2013						December 31, 2012
			2013			2012			2013			2012			Amount			Percent			Amount			Percent
	Nonperforming (1)		$	17,360		$	18,483		$	4,401		$	6,329		$	21,761			4	%	$	24,812			5	%
	Performing			211,595			225,144			283,644			282,672			495,239			96	%		507,816			95
	Total		$	228,955		$	243,627		$	288,045		$	289,001		$	517,000			100	%	$	532,628			100	%
	-1	Includes $10.8 million as of September 30, 2013 and 10.1 million as of December 31, 2012 of troubled debt restructured mortgages and home equity installment loans that are performing in accordance with modified terms and are accruing interest.
Schedule of Loans Identified as Troubled Debt Restructurings During Periods Indicated	'
	The following table presents loans identified as TDRs during the three and nine months ended September 30, 2013 and 2012:
			Three			Three			Nine			Nine
			Months Ended			Months Ended			Months Ended			Months Ended
			September 30,			September 30,			September 30,			September 30,
	(In Thousands)		2013			2012			2013			2012
	Commercial		$	6,800		$	710		$	6,824		$	9,986
	Commercial mortgages			108			—			1,169			—
	Construction			—			—			—			378
	Residential			207			2,779			806			4,170
	Consumer			256			2,165			973			2,312
	Total		$	7,371		$	5,654		$	9,772		$	16,846

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Details of Segment Information	'
	For the three months ended September 30, 2013
	Statement of Operations	WSFS Bank		Cash Connect		Trust &			Total
						Wealth
						Management
		(In Thousands)
	External customer revenues:
	Interest income	$	35,171	$	—	$	1,945		$	37,116
	Noninterest income		12,449		6,360		3,933			22,742
	Total external customer revenues		47,620		6,360		5,878			59,858
	Inter-segment revenues:
	Interest income		906		—		1,477			2,383
	Noninterest income		1,689		222		28			1,939
	Total inter-segment revenues		2,595		222		1,505			4,322
	Total revenue		50,215		6,582		7,383			64,180
	External customer expenses:
	Interest expense		3,587		—		123			3,710
	Noninterest expenses		26,510		3,470		2,829			32,809
	Provision for loan loss		2,263		—		(294	)		1,969
	Total external customer expenses		32,360		3,470		2,658			38,488
	Inter-segment expenses
	Interest expense		1,477		400		506			2,383
	Noninterest expenses		250		561		1,128			1,939
	Total inter-segment expenses		1,727		961		1,634			4,322
	Total expenses		34,087		4,431		4,292			42,810
	Income before taxes	$	16,128	$	2,151	$	3,091		$	21,370
	Provision for income taxes									7,210
	Consolidated net income								$	14,160
	Capital expenditures	$	460	$	131	$	—		$	591
	As of September 30, 2013
	Statement of Condition
	Cash and cash equivalents	$	76,785	$	422,544	$	3,116		$	502,445
	Other segment assets		3,756,277		1,995		181,939			3,940,211
	Total segment assets	$	3,833,062	$	424,539	$	185,055		$	4,442,656
	For the three months ended September 30, 2012
	Statement of Operations	WSFS Bank		Cash Connect		Trust & Wealth			Total
						Management
		(In Thousands)
	External customer revenues:
	Interest income	$	34,475	$	—	$	2,039		$	36,514
	Noninterest income		11,686		4,707		3,355			19,748
	Total external customer revenues		46,161		4,707		5,394			56,262
	Inter-segment revenues:
	Interest income		944		—		1,358			2,302
	Noninterest income		2,122		148		24			2,294
	Total inter-segment revenues		3,066		148		1,382			4,596
	Total revenue		49,227		4,855		6,776			60,858
	External customer expenses:
	Interest expense		5,377		—		244			5,621
	Noninterest expenses		27,300		2,113		2,740			32,153
	Provision for loan loss		2,997		—		754			3,751
	Total external customer expenses		35,674		2,113		3,738			41,525
	Inter-segment expenses
	Interest expense		1,358		338		606			2,302
	Noninterest expenses		172		586		1,536			2,294
	Total inter-segment expenses		1,530		924		2,142			4,596
	Total expenses		37,204		3,037		5,880			46,121
	Income (loss) before taxes	$	12,023	$	1,818	$	896		$	14,737
	Provision for income taxes									4,758
	Consolidated net income								$	9,979
	Capital expenditures	$	1,289	$	311	$	3		$	1,603
	As of December 31, 2012
	Statement of Condition
	Cash and cash equivalents	$	68,419	$	430,382	$	2,086		$	500,887
Other segment assets		3,683,073		1,605		189,583			3,874,261
Total segment assets	$	3,751,492	$	431,987	$	191,669		$	4,375,148
For the nine months ended September 30, 2013
Statement of Operations	WSFS		Cash		Trust &			Total
	Bank		Connect		Wealth
					Management
	(In Thousands)
External customer revenues:
Interest income	$	102,732	$	—	$	5,857		$	108,589
Noninterest income		31,009		17,412		11,934			60,355
Total external customer revenues		133,741		17,412		17,791			168,944
Inter-segment revenues:
Interest income		2,723		—		4,276			6,999
Noninterest income		5,040		645		82			5,767
Total inter-segment revenues		7,763		645		4,358			12,766
Total revenue		141,504		18,057		22,149			181,710
External customer expenses:
Interest expense		11,120		—		427			11,547
Noninterest expenses		79,671		9,629		9,031			98,331
Provision for loan loss		6,044		—		(164	)		5,880
Total external customer expenses		96,835		9,629		9,294			115,758
Inter-segment expenses
Interest expense		4,276		1,176		1,547			6,999
Noninterest expenses		727		1,649		3,391			5,767
Total inter-segment expenses		5,003		2,825		4,938			12,766
Total expenses		101,838		12,454		14,232			128,524
Income (loss) before taxes	$	39,666	$	5,603	$	7,917		$	53,186
Provision for income taxes									18,378
Consolidated net income								$	34,808
Capital expenditures	$	1,505	$	591	$	—		$	2,096
For the nine months ended September 30, 2012
Statement of Operations	WSFS Bank		Cash		Trust &			Total
			Connect		Wealth
					Management
	(In Thousands)
External customer revenues:
Interest income	$	107,199	$	—	$	6,301		$	113,500
Noninterest income		42,238		13,254		10,006			65,498
Total external customer revenues		149,437		13,254		16,307			178,998
Inter-segment revenues:
Interest income		3,099		—		4,344			7,443
Noninterest income		6,368		568		79			7,015
Total inter-segment revenues		9,467		568		4,423			14,458
Total revenue		158,904		13,822		20,730			193,456
External customer expenses:
Interest expense		17,330		—		669			17,999
Noninterest expenses		81,267		6,628		8,264			96,159
Provision for loan loss		26,786		—		1,593			28,379
Total external customer expenses		125,383		6,628		10,526			142,537
Inter-segment expenses
Interest expense		4,344		1,008		2,091			7,443
Noninterest expenses		647		1,711		4,657			7,015
Total inter-segment expenses		4,991		2,719		6,748			14,458
Total expenses		130,374		9,347		17,274			156,995
Income (loss) before taxes	$	28,530	$	4,475	$	3,456		$	36,461
Provision for income taxes									12,708
Consolidated net income								$	23,753
Capital expenditures	$	5,406	$	321	$	20		$	5,747

Fair_Value_Disclosures_of_Fina1

Fair Value Disclosures of Financial Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Balances of Assets Measured at Fair Value	'
	The table below presents the balances of assets measured at fair value as of September 30, 2013 (there were no material liabilities measured at fair value):
		Quoted				Significant				Significant				Total
		Prices in				Other				Unobservable
		Active				Observable				Inputs
		Markets for				Inputs
		Identical
		Asset
	Description	(Level 1)				(Level 2)				(Level 3)				Fair Value
		(in Thousands)
	Assets Measured at Fair Value on a Recurring Basis
	Available-for-sale securities:
	Collateralized mortgage obligations	$	—			$	108,470			$	—			$	108,470
	FNMA		—				368,249				—				368,249
	FHLMC		—				106,123				—				106,123
	GNMA		—				98,954				—				98,954
	U.S. Government and agencies		—				41,798				—				41,798
	State and political subdivisions		—				83,332				—				83,332
	Total assets measured at fair value on a recurring basis	$	—			$	806,926			$	—			$	806,926
	Liabilities Measured at Fair Value on a nonrecurring Basis
	Bonds payable	$	—			$	26,340			$	—			$	26,340
	Assets Measured at Fair Value on a Nonrecurring Basis
	Other real estate owned	$	—			$	—			$	7,163			$	7,163
	Reverse mortgage loans		—				—				40,095				40,095
	Impaired loans (collateral dependent)		—				—				43,379				43,379
	Total assets measured at fair value on a nonrecurring basis	$	—			$	—			$	90,637			$	90,637
	The table below presents the balances of assets measured at fair value as of December 31, 2012 (there are no material liabilities measured at fair value):
		Quoted				Significant				Significant				Total
		Prices in				Other				Unobservable
		Active				Observable				Inputs
		Markets for				Inputs
		Identical
		Asset
	Description	(Level 1)				(Level 2)				(Level 3)				Fair Value
		(in Thousands)
	Assets Measured at Fair Value on a Recurring Basis
	Available-for-sale securities:
	Collateralized mortgage obligations	$	—			$	252,300			$	7,096			$	259,396
	FNMA		—				406,255				—				406,255
	FHLMC		—				59,650				—				59,650
	GNMA		—				132,455				—				132,455
	U.S. Government and agencies		—				46,990				—				46,990
	State and political subdivisions		—				3,209				—				3,209
	Reverse mortgage loans		—				—				(457	)			(457	)
	Trading Securities		—				—				12,590				12,590
	Total assets measured at fair value on a recurring basis	$	—			$	900,859			$	19,229			$	920,088
	Assets Measured at Fair Value on a Nonrecurring Basis
	Other real estate owned	$	—			$	—			$	4,622			$	4,622
	Impaired loans		—				—				52,904				52,904
	Total assets measured at fair value on a nonrecurring basis	$	—			$	—			$	57,526			$	57,526
Assets Measured at Fair Value on Recurring Basis	'
	The changes in Level 3 assets measured at fair value on a recurring basis are summarized as follows:
										Available-
		Trading				Reverse				for-sale
		Securities				Mortgages				Securities				Total
	(In Thousands)
	Balance at December 31, 2011	$	12,432			$	(646	)		$	3,936			$	15,722
	Total net income for the period included in net income		33				12				—				45
	Purchases, sales, issuances, and settlements, net		—				177				—				177
	Mark-to-market adjustment		125				—				3,160				3,285
	Balance at December 31, 2012	$	12,590			$	(457	)		$	7,096			$	19,229
	Mark-to-market adjustment		(125	)			—				—				(125	)
	Reverse mortgage securitization trust consolidation		(12,465	)			457				(7,096	)			(19,104	)
	Balance at September 30, 2013	$	—			$	—			$	—			$	—
Book Value and Estimated Fair Value of Financial Instruments	'
	The book value and estimated fair value of our financial instruments are as follows:
		Fair Value		September 30, 2013								December 31, 2012
		Measurement		Book Value				Fair Value				Book Value				Fair Value
	(In Thousands)
	Financial assets:
	Cash and cash equivalents	Level 1		$	502,445			$	502,445			$	500,887			$	500,887
	Investment securities	See previous table			806,926				806,926				920,088				920,088
	Loans held for sale	Level 3			12,608				12,608				12,758				12,758
	Loans, net	Level 3			2,829,992				2,818,832				2,723,916				2,746,001
	Reverse mortgage loans	Level 3			40,095				40,095				(457	)			(457	)
	Stock in Federal Home Loan Bank of Pittsburgh	Level 2			33,876				33,876				31,165				31,165
	Accrued interest receivable	Level 2			9,833				9,833				9,652				9,652
	Financial liabilities:
	Deposits	Level 2			3,121,198				2,912,952				3,274,963				3,174,907
	Borrowed funds	Level 2			874,615				874,534				637,266				638,375
	Bonds Payable	Level 2			26,340				26,340				—				—
	Standby letters of credit	Level 3			135				135				224				224
	Accrued interest payable	Level 2			3,254				3,254				1,099				1,099

Associate_Employee_Benefit_Pla1

Associate (Employee) Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2013
Compensation And Retirement Disclosure [Abstract]	'
Schedule of Net Periodic Benefit Cost Components of Postretirement Benefits	'
	The following disclosures of the net periodic benefit cost components of postretirement benefits were measured at January 1, 2013 and 2012:
		Three months ended				Nine months ended
		September 30,				September 30,
		2013		2012		2013		2012
	(In Thousands)
	Service cost	$	86	$	72	$	258	$	216
	Interest cost		44		44		132		131
	Amortization of transition obligation		—		15		—		45
	Net loss recognition		20		17		60		51
	Net periodic benefit cost	$	150	$	148	$	450	$	443

Change_in_Accumulated_Other_Co1

Change in Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
Components of Accumulated Other Comprehensive Income	'
	Changes to accumulated other comprehensive income by component are shown net of taxes in the following tables for the period indicated:
		Net unrealized
		gains on			Net unrealized
		investment			losses on defined
		securities			benefit pension
	(in thousands)	available-for-sale			plan			Total
	Balance, June 30, 2013	$	(12,309	)	$	(472	)	$	(12,781	)
	Other comprehensive loss before reclassifications		(3,106	)		—			(3,106	)
	Less: Amounts reclassified from accumulated other comprehensive loss		(190	)		—			(190	)
	Net current-period other comprehensive loss		(3,296	)		—			(3,296	)
	Balance, September 30, 2013	$	(15,605	)	$	(472	)	$	(16,077	)
	Balance, June 30, 2012	$	9,767		$	(472	)	$	9,295
	Other comprehensive income before reclassifications		9,558			—			9,558
	Less: Amounts reclassified from accumulated other comprehensive loss		(1,520	)		—			(1,520	)
	Net current-period other comprehensive loss		8,038			—			8,038
	Balance, September 30, 2012	$	17,805		$	(472	)	$	17,333
		Net unrealized
		gains on			Net unrealized
		investment			losses on defined
		securities			benefit pension
	(in thousands)	available-for-sale			plan			Total
	Balance, December 31, 2012	$	13,415		$	(472	)	$	12,943
	Other comprehensive loss before reclassifications		(27,249	)		—			(27,249	)
	Less: Amounts reclassified from accumulated other comprehensive loss		(1,771	)		—			(1,771	)
	Net current-period other comprehensive loss		(29,020	)		—			(29,020	)
	Balance, September 30, 2013	$	(15,605	)	$	(472	)	$	(16,077	)
	Balance, December 31, 2011	$	11,674		$	(472	)	$	11,202
	Other comprehensive income before reclassifications		17,165			—			17,165
	Less: Amounts reclassified from accumulated other comprehensive loss		(11,034	)		—			(11,034	)
	Net current-period other comprehensive income		6,131			—			6,131
	Balance, September 30, 2012	$	17,805		$	(472	)	$	17,333
Components of Other Comprehensive Income	'
	The statement of operations impacted by components of other comprehensive income are presented in the table below.
		Three Months Ended						Affected line item in
		September 30,						Statements of Operations
	(in thousands)	2013			2012
	Securities available-for-sale:
	Realized gains on securities transactions	$	306		$	2,451		Securities gains, net
	Income taxes		(116	)		(931	)	Income tax provision
	Net of tax	$	190		$	1,520
		Nine Months Ended						Affected line item in
		September 30,						Statements of Operations
			2013			2012
	Securities available-for-sale:
	Realized gains on securities transactions	$	2,856		$	17,797		Securities gains, net
	Income taxes		(1,085	)		(6,763	)	Income tax provision
	Net of tax	$	1,771		$	11,034

Goodwill_and_Intangibles_Table

Goodwill and Intangibles (Tables)	9 Months Ended
	Sep. 30, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Summary of Other Intangible Assets	'
	The following table summarizes other intangible assets:
		Gross					Net
		Intangible		Accumulated			Intangible
		Assets		Amortization			Assets
		(In Thousands)
	September 30, 2013
	Core deposits	$	4,370	$	(2,458	)	$	1,912
	Other		7,104		(1,870	)		5,234
	Total other intangible assets	$	11,474	$	(4,328	)	$	7,146
	31-Dec-12
	Core deposits	$	4,370	$	(2,020	)	$	2,350
	Other		4,464		(1,640	)		2,824
	Total other intangible assets	$	8,834	$	(3,660	)	$	5,174
Schedule of Estimated Amortization Expense of Intangibles	'
	The following presents the estimated amortization expense of intangibles:
		Amortization
	(In Thousands)	of Intangibles
	Remaining in 2013	$	370
	2014		1,171
	2015		1,139
	2016		882
	2017		735
	Thereafter		2,849
	Total	$	7,146

Business_Combinations_Tables

Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Summary of Combined Fair Value of Assets and Liabilities Acquired	'
	In connection with the acquisition, the following table summarizes the combined fair value of the assets and liabilities acquired:
	Consideration Paid:
	Cash paid at closing	$	5,374
	Fair value of contingent consideration		2,750
	Value of consideration		8,124
	Assets acquired:
	(In Thousands)
	Cash		1,185
	Accounts receivable		220
	Fixed assets		148
	Loans-Held-For-Sale		10,096
	Intangible assets		2,353
	Total assets		14,002
	Liabilities assumed:
	Warehouse line of credit		10,067
	Accounts payable		60
	Total Liabilities		10,127
	Net assets acquired		3,875
	Goodwill resulting from acquisition of Array and Arrow	$	4,249

Basis_of_Presentation_Addition

Basis of Presentation - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013
	VIE
	Subsidiary
Subsidiary or Equity Method Investee [Line Items]	'
Number of offices	51
WSFS Bank [Member]	'
Subsidiary or Equity Method Investee [Line Items]	'
Number of wholly-owned subsidiaries	2
Number of consolidated variable interest entity	1
Montchanin [Member]	'
Subsidiary or Equity Method Investee [Line Items]	'
Number of wholly-owned subsidiaries	1
Delaware [Member]	'
Subsidiary or Equity Method Investee [Line Items]	'
Number of offices	41
Pennsylvania [Member]	'
Subsidiary or Equity Method Investee [Line Items]	'
Number of offices	8
Virginia [Member]	'
Subsidiary or Equity Method Investee [Line Items]	'
Number of offices	1
Nevada [Member]	'
Subsidiary or Equity Method Investee [Line Items]	'
Number of offices	1

Earnings_Per_Share_Computation

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Numerator:	'	'	'	'
Net income allocable to common stockholders	$13,828	$9,286	$33,175	$21,676
Denominator:	'	'	'	'
Denominator for basic earnings per share - weighted average shares	8,828	8,712	8,804	8,702
Effect of dilutive employee stock options and warrants	148	83	106	77
Denominator for diluted earnings per share - adjusted weighted average shares and assumed exercise	8,976	8,795	8,910	8,779
Basic:	'	'	'	'
Net income allocable to common stockholders	$1.57	$1.07	$3.77	$2.49
Diluted:	'	'	'	'
Net income allocable to common stockholders	$1.54	$1.06	$3.72	$2.47
Outstanding common stock equivalents having no dilutive effect	402	338	557	361

Investment_Securities_Schedule

Investment Securities - Schedule of Amortized Cost and Estimated Fair Value of Investment Securities Available-for-Sale and Trading Securities (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	$832,096	$886,488
Gross Unrealized Losses	-27,384	-717
Fair Value	806,926	907,955
Available-For-Sale Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	832,096	886,488
Gross Unrealized Gains	2,214	22,184
Gross Unrealized Losses	-27,384	-717
Fair Value	806,926	907,955
Federal National Mortgage Association ("FNMA") [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Unrealized Losses	-11,990	-243
Federal National Mortgage Association ("FNMA") [Member] | Available-For-Sale Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	'	396,910
Gross Unrealized Gains	'	9,588
Gross Unrealized Losses	'	-243
Fair Value	'	406,255
Collateralized Mortgage Obligation ("CMO") [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Unrealized Losses	-4,585	-301
Collateralized Mortgage Obligation ("CMO") [Member] | Available-For-Sale Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	112,887	251,848
Gross Unrealized Gains	169	7,849
Gross Unrealized Losses	-4,585	-301
Fair Value	108,471	259,396
Collateralized Mortgage Obligation ("CMO") [Member] | Trading Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	'	12,590
Gross Unrealized Gains	'	'
Gross Unrealized Losses	'	'
Fair Value	'	12,590
Federal Home Loan Mortgage Corporation ("FHLMC") [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Unrealized Losses	-3,397	-117
Federal Home Loan Mortgage Corporation ("FHLMC") [Member] | Available-For-Sale Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	'	58,596
Gross Unrealized Gains	'	1,171
Gross Unrealized Losses	'	-117
Fair Value	'	59,650
Government National Mortgage Association ("GNMA") [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Unrealized Losses	-2,530	-54
Government National Mortgage Association ("GNMA") [Member] | Available-For-Sale Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	'	129,288
Gross Unrealized Gains	'	3,221
Gross Unrealized Losses	'	-54
Fair Value	'	132,455
State and Political Subdivisions [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Unrealized Losses	-4,879	'
State and Political Subdivisions [Member] | Available-For-Sale Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	87,987	3,120
Gross Unrealized Gains	224	89
Gross Unrealized Losses	-4,879	'
Fair Value	83,332	3,209
U.S. Government and government sponsored enterprises ("GSE") [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Unrealized Losses	-3	-2
U.S. Government and government sponsored enterprises ("GSE") [Member] | Available-For-Sale Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	41,670	46,726
Gross Unrealized Gains	131	266
Gross Unrealized Losses	-3	-2
Fair Value	41,798	46,990
Mortgage-backed Securities ("MBS") [Member] | Federal National Mortgage Association ("FNMA") [Member] | Available-For-Sale Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	379,721	'
Gross Unrealized Gains	518	'
Gross Unrealized Losses	-11,990	'
Fair Value	368,249	'
Mortgage-backed Securities ("MBS") [Member] | Federal Home Loan Mortgage Corporation ("FHLMC") [Member] | Available-For-Sale Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	109,482	'
Gross Unrealized Gains	38	'
Gross Unrealized Losses	-3,397	'
Fair Value	106,123	'
Mortgage-backed Securities ("MBS") [Member] | Government National Mortgage Association ("GNMA") [Member] | Available-For-Sale Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	100,349	'
Gross Unrealized Gains	1,134	'
Gross Unrealized Losses	-2,530	'
Fair Value	$98,953	'

Investment_Securities_Schedule1

Investment Securities - Schedule of Maturities of Investment Securities Available-for-Sale (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	$832,096	$886,488
Available-for-Sale, Fair Value	806,926	907,955
Within one year [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	22,860	19,001
Available-for-Sale, Fair Value	22,932	19,115
After one year but within five years [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	32,661	28,855
Available-for-Sale, Fair Value	32,465	29,034
After five years but within ten years [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	312,070	321,103
Available-for-Sale, Fair Value	298,900	329,580
After ten years [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	464,505	517,529
Available-for-Sale, Fair Value	$452,629	$530,226

Investment_Securities_Addition

Investment Securities - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Securities amortized cost	$832,096,000	'	$886,488,000
Securities pledged as collateral	513,000,000	'	'
Proceeds from sale of investment securities	239,900,000	616,300,000	'
Gain from sale of investment securities	3,000,000	17,700,000	'
Unamortized premiums	25,100,000	'	'
Unaccreted discounts	90,000	'	'
Owned investment securities	678,920,000	'	111,339,000
Total unrealized losses on securities	-27,384,000	'	-717,000
Purchase price of municipal bonds	77,700,000	'	'
Mortgage-backed Securities ("MBS") [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Number of securities	134	'	'
Weighted average duration of MBS portfolio	5.8	'	'
U.S. Government and government sponsored enterprises ("GSE") [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Owned investment securities	2,003,000	'	2,008,000
Total unrealized losses on securities	-3,000	'	-2,000
U.S. Government and government sponsored enterprises ("GSE") [Member] | Mortgage-backed Securities ("MBS") [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Securities amortized cost	$702,400,000	'	'

Investment_Securities_Schedule2

Investment Securities - Schedule of Investment Securities' Gross Unrealized Losses and Fair Value by Investment Category (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	$671,518	$109,975
Less than 12 months, Unrealized Loss	27,230	684
12 months or longer, Fair Value	7,402	1,364
12 months or longer, Unrealized Loss	154	33
Total, Fair Value	678,920	111,339
Total, Unrealized Loss	27,384	717
Federal National Mortgage Association ("FNMA") [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	331,949	43,696
Less than 12 months, Unrealized Loss	11,840	243
12 months or longer, Fair Value	4,060	'
12 months or longer, Unrealized Loss	150	'
Total, Fair Value	336,009	43,696
Total, Unrealized Loss	11,990	243
Collateralized Mortgage Obligation ("CMO") [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	99,464	40,358
Less than 12 months, Unrealized Loss	4,584	268
12 months or longer, Fair Value	1,339	1,364
12 months or longer, Unrealized Loss	1	33
Total, Fair Value	100,803	41,722
Total, Unrealized Loss	4,585	301
Federal Home Loan Mortgage Corporation ("FHLMC") [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	105,539	13,884
Less than 12 months, Unrealized Loss	3,397	117
12 months or longer, Fair Value	'	'
12 months or longer, Unrealized Loss	'	'
Total, Fair Value	105,539	13,884
Total, Unrealized Loss	3,397	117
Government National Mortgage Association ("GNMA") [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	75,096	10,029
Less than 12 months, Unrealized Loss	2,530	54
12 months or longer, Fair Value	'	'
12 months or longer, Unrealized Loss	'	'
Total, Fair Value	75,096	10,029
Total, Unrealized Loss	2,530	54
State and Political Subdivisions [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	59,470	'
Less than 12 months, Unrealized Loss	4,879	'
12 months or longer, Fair Value	'	'
12 months or longer, Unrealized Loss	'	'
Total, Fair Value	59,470	'
Total, Unrealized Loss	4,879	'
U.S. Government and government sponsored enterprises ("GSE") [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	'	2,008
Less than 12 months, Unrealized Loss	'	2
12 months or longer, Fair Value	2,003	'
12 months or longer, Unrealized Loss	3	'
Total, Fair Value	2,003	2,008
Total, Unrealized Loss	$3	$2

Allowance_for_Loan_Losses_and_2

Allowance for Loan Losses and Credit Quality Information - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Period for impairment loans	'	'90 days	'	'
Impairment loans, charge off period	'	'90 days	'	'
Increase in calculated reserves percentage	2.00%	2.00%	'	'
Interest income on impaired loans	$234,000	$706,000	'	'
Balance of troubled debt restructurings	26,600,000	26,600,000	'	22,000,000
TDRs in nonaccrual status	'	15,500,000	'	11,900,000
TDRs in accrual status	'	11,100,000	'	10,100,000
Troubled debt restructuring related reserves	1	1	'	936,000
Usual sustained repayment performance period	'	'6 months	'	'
Increase in allowance for loan losses	'	37,000	357,000	'
Troubled debt restructurings charged off	363,000	363,000	8,100,000	'
Consumer Loan Commitments [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Term past due loans placed on nonaccrual status	'	90	'	'
Commercial Loan Commitments [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Number of term loans modified in troubled debt restructurings	'	5	'	'
Residential and Consumer Loan [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Number of term loans modified in troubled debt restructurings	'	21	'	'
Residential [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Number of TDRs that defaulted during period	1	1	'	'
Residential TDR	$130,000	$130,000	'	'

Allowance_for_Loan_Losses_and_3

Allowance for Loan Losses and Credit Quality Information - Schedule of Allowance for Loan Losses and Loan Balances (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Beginning balance	$41,494	$46,429	$43,922	$53,080
Charge-offs	-2,943	-6,870	-10,685	-40,048
Recoveries	911	2,288	2,314	4,187
Provision (credit)	1,969	3,751	5,880	28,379
Ending balance	41,431	45,598	41,431	45,598
Loans individually evaluated for impairment	5,951	2,873	5,951	2,873
Loans collectively evaluated for impairment	35,480	42,725	35,480	42,725
Ending balance	41,431	45,598	41,431	45,598
Loans individually evaluated for impairment	49,329	50,164	49,329	50,164
Loans collectively evaluated for impairment	2,827,885	2,651,595	2,827,885	2,651,595
Ending balance	2,877,214	2,701,759	2,877,214	2,701,759
Commercial Loan Commitments [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Beginning balance	12,967	9,891	13,663	15,067
Charge-offs	-1,172	-1,281	-2,311	-11,316
Recoveries	273	455	900	1,305
Provision (credit)	594	-127	410	3,882
Ending balance	12,662	8,938	12,662	8,938
Loans individually evaluated for impairment	2,004	1,244	2,004	1,244
Loans collectively evaluated for impairment	10,658	7,694	10,658	7,694
Ending balance	12,662	8,938	12,662	8,938
Loans individually evaluated for impairment	5,833	3,579	5,833	3,579
Loans collectively evaluated for impairment	748,106	694,626	748,106	694,626
Ending balance	753,939	698,205	753,939	698,205
Owner - Occupied Commercial [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Beginning balance	8,049	4,091	6,108	9,235
Charge-offs	-31	-926	-68	-3,614
Recoveries	55	184	100	190
Provision (credit)	-23	-4	1,910	-2,466
Ending balance	8,050	3,345	8,050	3,345
Loans individually evaluated for impairment	945	222	945	222
Loans collectively evaluated for impairment	7,105	3,123	7,105	3,123
Ending balance	8,050	3,345	8,050	3,345
Loans individually evaluated for impairment	12,568	13,324	12,568	13,324
Loans collectively evaluated for impairment	777,297	737,670	777,297	737,670
Ending balance	789,865	750,994	789,865	750,994
Commercial Mortgages [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Beginning balance	6,345	9,618	8,079	7,556
Charge-offs	-103	-709	-1,824	-5,600
Recoveries	333	18	442	382
Provision (credit)	345	-2,281	223	4,308
Ending balance	6,920	6,646	6,920	6,646
Loans individually evaluated for impairment	1,995	90	1,995	90
Loans collectively evaluated for impairment	4,925	6,556	4,925	6,556
Ending balance	6,920	6,646	6,920	6,646
Loans individually evaluated for impairment	8,894	5,875	8,894	5,875
Loans collectively evaluated for impairment	704,895	598,681	704,895	598,681
Ending balance	713,789	604,556	713,789	604,556
Construction [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Beginning balance	3,952	5,307	6,456	4,074
Charge-offs	-4	-676	-1,344	-10,680
Recoveries	21	1,314	106	1,642
Provision (credit)	-380	-810	-1,629	10,099
Ending balance	3,589	5,135	3,589	5,135
Loans individually evaluated for impairment	'	94	'	94
Loans collectively evaluated for impairment	3,589	5,041	3,589	5,041
Ending balance	3,589	5,135	3,589	5,135
Loans individually evaluated for impairment	274	2,620	274	2,620
Loans collectively evaluated for impairment	102,347	111,557	102,347	111,557
Ending balance	102,621	114,177	102,621	114,177
Residential [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Beginning balance	3,230	6,265	3,124	6,544
Charge-offs	-290	-705	-985	-3,344
Recoveries	10	113	51	171
Provision (credit)	364	2,690	1,124	4,992
Ending balance	3,314	8,363	3,314	8,363
Loans individually evaluated for impairment	995	1,199	995	1,199
Loans collectively evaluated for impairment	2,319	7,164	2,319	7,164
Ending balance	3,314	8,363	3,314	8,363
Loans individually evaluated for impairment	17,360	18,072	17,360	18,072
Loans collectively evaluated for impairment	211,595	232,270	211,595	232,270
Ending balance	228,955	250,342	228,955	250,342
Consumer Loan Commitments [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Beginning balance	6,137	10,341	5,631	10,604
Charge-offs	-1,343	-2,573	-4,153	-5,494
Recoveries	219	204	715	497
Provision (credit)	1,071	4,300	3,891	6,665
Ending balance	6,084	12,272	6,084	12,272
Loans individually evaluated for impairment	12	24	12	24
Loans collectively evaluated for impairment	6,072	12,248	6,072	12,248
Ending balance	6,084	12,272	6,084	12,272
Loans individually evaluated for impairment	4,400	6,694	4,400	6,694
Loans collectively evaluated for impairment	283,645	276,791	283,645	276,791
Ending balance	288,045	283,485	288,045	283,485
Complexity Risk [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Beginning balance	814	916	861	'
Charge-offs	'	'	'	'
Recoveries	'	'	'	'
Provision (credit)	-2	-17	-49	899
Ending balance	812	899	812	899
Loans individually evaluated for impairment	'	'	'	'
Loans collectively evaluated for impairment	812	899	812	899
Ending balance	812	899	812	899
Loans individually evaluated for impairment	'	'	'	'
Loans collectively evaluated for impairment	'	'	'	'
Ending balance	'	'	'	'

Allowance_for_Loan_Losses_and_4

Allowance for Loan Losses and Credit Quality Information - Summary of Nonaccrual and Past Due Loans (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-59 Days Past Due and Still Accruing, Total	$24,518	$9,101
60-89 Days Past Due and Still Accruing, Total	1,541	1,202
Greater Than 90 Days Past Due and Still Accruing, Total	658	786
Total Past Due And Still Accruing, Total	26,717	11,089
Accruing Current Balances, Total	2,812,327	2,713,591
Nonaccrual Loans, Total	38,170	47,760
Total Loans	2,877,214	2,772,440
30-59 Days Past Due and Still Accruing, % of Total Loans	0.85%	0.33%
60-89 Days Past Due and Still Accruing, % of Total Loans	0.06%	0.04%
Greater Than 90 Days Past Due and Still Accruing, % of Total Loans	0.02%	0.03%
Total Past Due And Still Accruing, % of Total Loans	0.93%	0.40%
Accruing Current Balances, % of Total Loans	97.74%	97.88%
Nonaccrual Loans, % of Total Loans	1.33%	1.72%
% of Total Loans	100.00%	100.00%
Commercial Loan Commitments [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-59 Days Past Due and Still Accruing, Total	13,212	1,214
60-89 Days Past Due and Still Accruing, Total	'	'
Greater Than 90 Days Past Due and Still Accruing, Total	'	'
Total Past Due And Still Accruing, Total	13,212	1,214
Accruing Current Balances, Total	735,077	698,416
Nonaccrual Loans, Total	5,650	4,861
Total Loans	753,939	704,491
Owner - Occupied Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-59 Days Past Due and Still Accruing, Total	6,474	1,264
60-89 Days Past Due and Still Accruing, Total	'	'
Greater Than 90 Days Past Due and Still Accruing, Total	'	'
Total Past Due And Still Accruing, Total	6,474	1,264
Accruing Current Balances, Total	770,823	755,316
Nonaccrual Loans, Total	12,568	14,001
Total Loans	789,865	770,581
Commercial Mortgages [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-59 Days Past Due and Still Accruing, Total	22	'
60-89 Days Past Due and Still Accruing, Total	'	'
Greater Than 90 Days Past Due and Still Accruing, Total	'	'
Total Past Due And Still Accruing, Total	22	'
Accruing Current Balances, Total	705,077	618,731
Nonaccrual Loans, Total	8,690	12,634
Total Loans	713,789	631,365
Construction [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-59 Days Past Due and Still Accruing, Total	'	269
60-89 Days Past Due and Still Accruing, Total	'	70
Greater Than 90 Days Past Due and Still Accruing, Total	'	'
Total Past Due And Still Accruing, Total	'	339
Accruing Current Balances, Total	102,347	131,489
Nonaccrual Loans, Total	274	1,547
Total Loans	102,621	133,375
Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-59 Days Past Due and Still Accruing, Total	3,672	5,383
60-89 Days Past Due and Still Accruing, Total	1,073	606
Greater Than 90 Days Past Due and Still Accruing, Total	658	786
Total Past Due And Still Accruing, Total	5,403	6,775
Accruing Current Balances, Total	215,113	226,863
Nonaccrual Loans, Total	8,439	9,989
Total Loans	228,955	243,627
Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-59 Days Past Due and Still Accruing, Total	1,138	971
60-89 Days Past Due and Still Accruing, Total	468	526
Greater Than 90 Days Past Due and Still Accruing, Total	'	'
Total Past Due And Still Accruing, Total	1,606	1,497
Accruing Current Balances, Total	283,890	282,776
Nonaccrual Loans, Total	2,549	4,728
Total Loans	$288,045	$289,001

Allowance_for_Loan_Losses_and_5

Allowance for Loan Losses and Credit Quality Information - Analysis of Impaired Loans (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Ending Loan Balances	$49,329	$57,855
Loans with No Specific Reserve	25,133	38,707
Loans with Specific Reserve	24,196	19,148
Related Specific Reserve	5,951	4,951
Contractual Principal Balances	88,962	98,657
Average Loan Balances	53,180	64,752
Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Ending Loan Balances	5,833	4,861
Loans with No Specific Reserve	2,288	1,598
Loans with Specific Reserve	3,545	3,263
Related Specific Reserve	2,004	2,100
Contractual Principal Balances	13,728	12,060
Average Loan Balances	5,062	4,993
Owner - Occupied Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Ending Loan Balances	12,568	14,001
Loans with No Specific Reserve	5,723	13,827
Loans with Specific Reserve	6,845	174
Related Specific Reserve	945	1
Contractual Principal Balances	14,911	18,658
Average Loan Balances	13,167	16,856
Commercial Mortgage [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Ending Loan Balances	8,894	12,634
Loans with No Specific Reserve	2,896	5,422
Loans with Specific Reserve	5,998	7,212
Related Specific Reserve	1,995	1,887
Contractual Principal Balances	19,494	22,192
Average Loan Balances	9,887	10,233
Construction [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Ending Loan Balances	274	1,547
Loans with No Specific Reserve	274	1,172
Loans with Specific Reserve	'	375
Related Specific Reserve	'	28
Contractual Principal Balances	16,012	17,711
Average Loan Balances	1,261	11,239
Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Ending Loan Balances	17,360	18,483
Loans with No Specific Reserve	9,680	11,053
Loans with Specific Reserve	7,680	7,430
Related Specific Reserve	995	919
Contractual Principal Balances	19,726	20,771
Average Loan Balances	18,091	16,917
Consumer Loan Commitments [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Ending Loan Balances	4,400	6,329
Loans with No Specific Reserve	4,272	5,635
Loans with Specific Reserve	128	694
Related Specific Reserve	12	16
Contractual Principal Balances	5,091	7,265
Average Loan Balances	$5,712	$4,514

Allowance_for_Loan_Losses_and_6

Allowance for Loan Losses and Customer Credit Quality Information - Schedule of Credit Exposure Credit Risk Profile by Internally Assigned Risk Rating (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Commercial Loans	100.00%	100.00%
Accrual	$2,360,214	$2,239,812
Special Mention [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	43,387	73,729
Accrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	106,930	119,950
Nonaccrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	10,902	22,019
Doubtful / Nonaccrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	16,280	11,024
Total Special Mention, Substandard and Doubtful [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Commercial Loans	8.00%	10.00%
Accrual	177,499	226,722
Pass [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Commercial Loans	92.00%	90.00%
Accrual	2,182,715	2,013,090
Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	753,939	704,491
Commercial [Member] | Special Mention [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	17,148	14,611
Commercial [Member] | Accrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	58,944	63,074
Commercial [Member] | Nonaccrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	2,105	1,598
Commercial [Member] | Doubtful / Nonaccrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	3,545	3,263
Commercial [Member] | Total Special Mention, Substandard and Doubtful [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	81,742	82,546
Commercial [Member] | Pass [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	672,197	621,945
Owner - Occupied Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	789,865	770,581
Owner - Occupied Commercial [Member] | Special Mention [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	15,433	27,398
Owner - Occupied Commercial [Member] | Accrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	38,792	44,899
Owner - Occupied Commercial [Member] | Nonaccrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	5,723	13,827
Owner - Occupied Commercial [Member] | Doubtful / Nonaccrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	6,845	174
Owner - Occupied Commercial [Member] | Total Special Mention, Substandard and Doubtful [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	66,793	86,298
Owner - Occupied Commercial [Member] | Pass [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	723,072	684,283
Commercial Mortgages [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	713,789	631,365
Commercial Mortgages [Member] | Special Mention [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	9,239	29,267
Commercial Mortgages [Member] | Accrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	6,156	6,222
Commercial Mortgages [Member] | Nonaccrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	2,896	5,422
Commercial Mortgages [Member] | Doubtful / Nonaccrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	5,998	7,212
Commercial Mortgages [Member] | Total Special Mention, Substandard and Doubtful [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	24,289	48,123
Commercial Mortgages [Member] | Pass [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	689,500	583,242
Construction [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	102,621	133,375
Construction [Member] | Special Mention [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	1,567	2,453
Construction [Member] | Accrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	2,907	5,755
Construction [Member] | Nonaccrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	274	1,172
Construction [Member] | Doubtful / Nonaccrual [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	'	375
Construction [Member] | Total Special Mention, Substandard and Doubtful [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	4,748	9,755
Construction [Member] | Pass [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Accrual	$97,873	$123,620

Allowance_for_Loan_Losses_and_7

Allowance for Loan Losses and Credit Quality Information - Schedule of Consumer Credit Exposure Credit Risk Profile Based on Payment Activity (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Gross loans	$2,877,214	$2,772,440
Total	100.00%	100.00%
Residential and Consumer Loan [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Gross loans	517,000	532,628
Total	100.00%	100.00%
Residential and Consumer Loan [Member] | Nonperforming Financing Receivable [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Gross loans	21,761	24,812
Total	4.00%	5.00%
Residential and Consumer Loan [Member] | Performing Financing Receivable [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Gross loans	495,239	507,816
Total	96.00%	95.00%
Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Gross loans	228,955	243,627
Residential [Member] | Nonperforming Financing Receivable [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Gross loans	17,360	18,483
Residential [Member] | Performing Financing Receivable [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Gross loans	211,595	225,144
Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Gross loans	288,045	289,001
Consumer [Member] | Nonperforming Financing Receivable [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Gross loans	4,401	6,329
Consumer [Member] | Performing Financing Receivable [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Gross loans	$283,644	$282,672

Allowance_for_Loan_Losses_and_8

Allowance for Loan Losses and Credit Quality Information - Schedule of Consumer Credit Exposure Credit Risk Profile Based on Payment Activity (Parenthetical) (Detail) (USD $)	9 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Receivables [Abstract]	'	'
Troubled debt restructured mortgages and home equity installment loans	$11.10	$10.10

Allowance_for_Loan_Losses_and_9

Allowance for Loan Losses and Credit Quality Information - Schedule of Loans Identified as Troubled Debt Restructurings During Periods Indicated (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Modifications [Line Items]	'	'	'	'
Loans identified during the period	$7,371	$5,654	$9,772	$16,846
Commercial [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Loans identified during the period	6,800	710	6,824	9,986
Commercial Mortgages [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Loans identified during the period	108	'	1,169	'
Construction [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Loans identified during the period	'	'	'	378
Residential [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Loans identified during the period	207	2,779	806	4,170
Consumer [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Loans identified during the period	$256	$2,165	$973	$2,312

Reverse_Mortgages_Loans_and_Re

Reverse Mortgages Loans and Related Assets and Liabilities - Additional Information (Detail) (USD $)	9 Months Ended		9 Months Ended		0 Months Ended	3 Months Ended	0 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
			Maximum [Member]	Minimum [Member]	Reverse mortgage loans [Member]	SASCO 2002-RM1 Class O Securities [Member]	SASCO 2002-RM1 Class O Securities [Member]
					M		Mortgage-backed Securities ("MBS") [Member]
Mortgage Banking Activities [Line Items]	'	'	'	'	'	'	'
Mortgage-backed securities, additional payment receivable	'	$12,590,000	'	'	'	'	$10,000,000
Additional option acquired interest rate	'	'	'	'	'	'	49.90%
Trading securities, par value	'	'	'	'	'	'	2,500,000
Investments purchase percentage	'	'	'	'	'	'	100.00%
Consolidated reverse mortgage loan	'	'	'	'	'	40,500,000	'
Reverse mortgage loan cash amount	'	'	'	'	'	5,800,000	'
Mortgage-backed securities fair value	'	'	'	'	'	885,000	'
Mortgage payoff backed value	'	'	'	'	'	38,800,000	'
Consolidated mortgage investment	40,100,000	'	'	'	'	'	'
Approximate average loan rate	45.00%	'	'	'	'	'	'
Average useful life of borrowers	'92 years	'	'	'	'	'	'
Estimated cash flow percent	50.00%	'	'	'	'	'	'
Forecasted house decline rate	2.00%	'	'	'	'	'	'
Forecasted house recovery rate	2.00%	'	'	'	'	'	'
Assumptions used for future interest rates	'	'	'	'	'Up to 3% over ten years	'	'
Interest rate	'	'	'	'	3.00%	'	'
Interest rate of LIBOR period	'	'	'	'	'10 years	'	'
LIBOR period	'	'	'	'	1	'	'
Net present value decrease	'	'	$890,000	$850,000	'	'	'
Change in present value of discount rate	'	'	1.00%	1.00%	'	'	'
Discount rate	18.70%	'	'	'	'	'	'

Taxes_on_Income_Additional_Inf

Taxes on Income - Additional Information (Detail) (USD $)	3 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Deferred tax asset	$6,700,000
Deferred tax asset, valuation allowance	6,700,000
Tax benefit	$200,000

Segment_Information_Additional

Segment Information - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
	Segment	Segment	Segment	Segment
Segment Reporting [Abstract]	'	'	'	'
Number of businesses	3	3	3	3
Assets under management	$609,000,000	'	$609,000,000	'
Assets under administration	$8,100,000,000	'	$8,100,000,000	'

Segment_Information_Details_of

Segment Information - Details of Segment Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Interest income	$37,116	$36,514	$108,589	$113,500	'	'
Noninterest income	22,742	19,748	60,355	65,498	'	'
Total revenue	59,858	56,262	168,944	178,998	'	'
Interest expense	3,710	5,621	11,547	17,999	'	'
Noninterest expenses	32,809	32,153	98,331	96,159	'	'
Provision for loan loss	1,969	3,751	5,880	28,379	'	'
Total expenses	38,488	41,525	115,758	142,537	'	'
Income (loss) before taxes	21,370	14,737	53,186	36,461	'	'
Provision for income taxes	7,210	4,758	18,378	12,708	'	'
Consolidated net income	14,160	9,979	34,808	23,753	'	'
Capital expenditures	591	1,603	2,096	5,747	'	'
Cash and cash equivalents	502,445	447,100	502,445	447,100	500,887	468,017
Other segment assets	3,940,211	'	3,940,211	'	3,874,261	'
Total assets	4,442,656	'	4,442,656	'	4,375,148	'
Operating Segments [Member]	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Total revenue	64,180	60,858	181,710	193,456	'	'
Total expenses	42,810	46,121	128,524	156,995	'	'
Intersegment Eliminations [Member]	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Interest income	2,383	2,302	6,999	7,443	'	'
Noninterest income	1,939	2,294	5,767	7,015	'	'
Total revenue	4,322	4,596	12,766	14,458	'	'
Interest expense	2,383	2,302	6,999	7,443	'	'
Noninterest expenses	1,939	2,294	5,767	7,015	'	'
Total expenses	4,322	4,596	12,766	14,458	'	'
WSFS Bank [Member]	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Interest income	35,171	34,475	102,732	107,199	'	'
Noninterest income	12,449	11,686	31,009	42,238	'	'
Total revenue	47,620	46,161	133,741	149,437	'	'
Interest expense	3,587	5,377	11,120	17,330	'	'
Noninterest expenses	26,510	27,300	79,671	81,267	'	'
Provision for loan loss	2,263	2,997	6,044	26,786	'	'
Total expenses	32,360	35,674	96,835	125,383	'	'
Income (loss) before taxes	16,128	12,023	39,666	28,530	'	'
Capital expenditures	460	1,289	1,505	5,406	'	'
WSFS Bank [Member] | Operating Segments [Member]	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Total revenue	50,215	49,227	141,504	158,904	'	'
Total expenses	34,087	37,204	101,838	130,374	'	'
Cash and cash equivalents	76,785	'	76,785	'	68,419	'
Other segment assets	3,756,277	'	3,756,277	'	3,683,073	'
Total assets	3,833,062	'	3,833,062	'	3,751,492	'
WSFS Bank [Member] | Intersegment Eliminations [Member]	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Interest income	906	944	2,723	3,099	'	'
Noninterest income	1,689	2,122	5,040	6,368	'	'
Total revenue	2,595	3,066	7,763	9,467	'	'
Interest expense	1,477	1,358	4,276	4,344	'	'
Noninterest expenses	250	172	727	647	'	'
Total expenses	1,727	1,530	5,003	4,991	'	'
Cash Connect [Member]	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Interest income	'	'	'	'	'	'
Noninterest income	6,360	4,707	17,412	13,254	'	'
Total revenue	6,360	4,707	17,412	13,254	'	'
Interest expense	'	'	'	'	'	'
Noninterest expenses	3,470	2,113	9,629	6,628	'	'
Provision for loan loss	'	'	'	'	'	'
Total expenses	3,470	2,113	9,629	6,628	'	'
Income (loss) before taxes	2,151	1,818	5,603	4,475	'	'
Capital expenditures	131	311	591	321	'	'
Cash Connect [Member] | Operating Segments [Member]	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Total revenue	6,582	4,855	18,057	13,822	'	'
Total expenses	4,431	3,037	12,454	9,347	'	'
Cash and cash equivalents	422,544	'	422,544	'	430,382	'
Other segment assets	1,995	'	1,995	'	1,605	'
Total assets	424,539	'	424,539	'	431,987	'
Cash Connect [Member] | Intersegment Eliminations [Member]	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Interest income	'	'	'	'	'	'
Noninterest income	222	148	645	568	'	'
Total revenue	222	148	645	568	'	'
Interest expense	400	338	1,176	1,008	'	'
Noninterest expenses	561	586	1,649	1,711	'	'
Total expenses	961	924	2,825	2,719	'	'
Trust & Wealth Management [Member]	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Interest income	1,945	2,039	5,857	6,301	'	'
Noninterest income	3,933	3,355	11,934	10,006	'	'
Total revenue	5,878	5,394	17,791	16,307	'	'
Interest expense	123	244	427	669	'	'
Noninterest expenses	2,829	2,740	9,031	8,264	'	'
Provision for loan loss	-294	754	-164	1,593	'	'
Total expenses	2,658	3,738	9,294	10,526	'	'
Income (loss) before taxes	3,091	896	7,917	3,456	'	'
Capital expenditures	'	3	'	20	'	'
Trust & Wealth Management [Member] | Operating Segments [Member]	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Total revenue	7,383	6,776	22,149	20,730	'	'
Total expenses	4,292	5,880	14,232	17,274	'	'
Cash and cash equivalents	3,116	'	3,116	'	2,086	'
Other segment assets	181,939	'	181,939	'	189,583	'
Total assets	185,055	'	185,055	'	191,669	'
Trust & Wealth Management [Member] | Intersegment Eliminations [Member]	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'
Interest income	1,477	1,358	4,276	4,344	'	'
Noninterest income	28	24	82	79	'	'
Total revenue	1,505	1,382	4,358	4,423	'	'
Interest expense	506	606	1,547	2,091	'	'
Noninterest expenses	1,128	1,536	3,391	4,657	'	'
Total expenses	$1,634	$2,142	$4,938	$6,748	'	'

Fair_Value_Disclosures_of_Fina2

Fair Value Disclosures of Financial Assets - Balances of Assets Measured at Fair Value (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	$806,926	$907,955
Total assets measured at fair value on a recurring basis	806,926	920,088
Bonds payable	26,340	'
Assets Measured at Fair Value on a Nonrecurring Basis	7,163	4,622
Assets Measured at Fair Value on a Nonrecurring Basis	43,400	52,900
Total assets measured at fair value on a nonrecurring basis	90,634	57,526
Collateralized Mortgage Obligation ("CMO") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	108,470	259,396
Federal National Mortgage Association ("FNMA") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	368,249	406,255
Federal Home Loan Mortgage Corporation ("FHLMC") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	106,123	59,650
Government National Mortgage Association ("GNMA") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	98,954	132,455
U.S. Government and agencies [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	41,798	46,990
State and Political Subdivisions [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	83,332	3,209
Reverse Mortgage Loans [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	40,095	-457
Other real estate owned [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	7,163	4,622
Impaired loans (collateral dependent) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	43,379	52,904
Trading Securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	12,590
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total assets measured at fair value on a recurring basis	'	'
Bonds payable	'	'
Total assets measured at fair value on a nonrecurring basis	'	'
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member] | Collateralized Mortgage Obligation ("CMO") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member] | Federal National Mortgage Association ("FNMA") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member] | Federal Home Loan Mortgage Corporation ("FHLMC") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member] | Government National Mortgage Association ("GNMA") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member] | U.S. Government and agencies [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member] | State and Political Subdivisions [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member] | Reverse Mortgage Loans [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	'	'
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member] | Other real estate owned [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	'	'
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member] | Impaired loans (collateral dependent) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	'	'
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member] | Trading Securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total assets measured at fair value on a recurring basis	806,926	900,859
Bonds payable	26,340	'
Total assets measured at fair value on a nonrecurring basis	'	'
Significant Other Observable Inputs (Level 2) [Member] | Collateralized Mortgage Obligation ("CMO") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	108,470	252,300
Significant Other Observable Inputs (Level 2) [Member] | Federal National Mortgage Association ("FNMA") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	368,249	406,255
Significant Other Observable Inputs (Level 2) [Member] | Federal Home Loan Mortgage Corporation ("FHLMC") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	106,123	59,650
Significant Other Observable Inputs (Level 2) [Member] | Government National Mortgage Association ("GNMA") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	98,954	132,455
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government and agencies [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	41,798	46,990
Significant Other Observable Inputs (Level 2) [Member] | State and Political Subdivisions [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	83,332	3,209
Significant Other Observable Inputs (Level 2) [Member] | Reverse Mortgage Loans [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	'	'
Significant Other Observable Inputs (Level 2) [Member] | Other real estate owned [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	'	'
Significant Other Observable Inputs (Level 2) [Member] | Impaired loans (collateral dependent) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	'	'
Significant Other Observable Inputs (Level 2) [Member] | Trading Securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total assets measured at fair value on a recurring basis	'	19,229
Bonds payable	'	'
Total assets measured at fair value on a nonrecurring basis	90,637	57,526
Significant Unobservable Inputs (Level 3) [Member] | Collateralized Mortgage Obligation ("CMO") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	7,096
Significant Unobservable Inputs (Level 3) [Member] | Federal National Mortgage Association ("FNMA") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Significant Unobservable Inputs (Level 3) [Member] | Federal Home Loan Mortgage Corporation ("FHLMC") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Significant Unobservable Inputs (Level 3) [Member] | Government National Mortgage Association ("GNMA") [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Significant Unobservable Inputs (Level 3) [Member] | U.S. Government and agencies [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Significant Unobservable Inputs (Level 3) [Member] | State and Political Subdivisions [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	'
Significant Unobservable Inputs (Level 3) [Member] | Reverse Mortgage Loans [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	40,095	-457
Significant Unobservable Inputs (Level 3) [Member] | Other real estate owned [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	7,163	4,622
Significant Unobservable Inputs (Level 3) [Member] | Impaired loans (collateral dependent) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Nonrecurring Basis	43,379	52,904
Significant Unobservable Inputs (Level 3) [Member] | Trading Securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Assets Measured at Fair Value on a Recurring Basis	'	$12,590

Fair_Value_Disclosures_of_Fina3

Fair Value Disclosures of Financial Assets - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale of securities, fair value	$806,926,000	$907,955,000
Minimum discount rate on appraisals of collateral securing loan	10.00%	'
Maximum discount rate on appraisals of collateral securing loan	50.00%	'
Collateral for collateral dependent loans	43,400,000	52,900,000
Valuation allowance on impaired loans	6,000,000	5,000,000
Federal Agency debentures [Member] | AAA-rated [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale of securities, fair value	41,800,000	'
Federal Agency MBS [Member] | AAA-rated [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale of securities, fair value	681,800,000	'
Municipal bonds [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale of securities, fair value	$83,300,000	'

Fair_Value_Disclosures_of_Fina4

Fair Value Disclosures of Financial Assets - Assets Measured at Fair Value on Recurring Basis (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Balance	$19,229	$15,722
Total net income (losses) for the period included in net income	'	45
Purchases, sales, issuances, and settlements, net	'	177
Mark-to-market adjustment	-125	3,285
Reverse mortgage securitization trust consolidation	-19,104	'
Balance	'	19,229
Trading Securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Balance	12,590	12,432
Total net income (losses) for the period included in net income	'	33
Purchases, sales, issuances, and settlements, net	'	'
Mark-to-market adjustment	-125	125
Reverse mortgage securitization trust consolidation	-12,465	'
Balance	'	12,590
Reverse Mortgage Loans [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Balance	-457	-646
Total net income (losses) for the period included in net income	'	12
Purchases, sales, issuances, and settlements, net	'	177
Mark-to-market adjustment	'	'
Reverse mortgage securitization trust consolidation	457	'
Balance	'	-457
Available-For-Sale Securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Balance	7,096	3,936
Total net income (losses) for the period included in net income	'	'
Purchases, sales, issuances, and settlements, net	'	'
Mark-to-market adjustment	'	3,160
Reverse mortgage securitization trust consolidation	-7,096	'
Balance	'	$7,096

Fair_Value_Disclosures_of_Fina5

Fair Value Disclosures of Financial Assets - Book Value and Estimated Fair Value of Financial Instruments (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Financial assets:	'	'	'	'
Cash and cash equivalents	$502,445	$500,887	$447,100	$468,017
Loans held for sale	12,608	12,758	'	'
Loans, net	2,829,992	2,723,916	'	'
Stock in Federal Home Loan Bank of Pittsburgh	33,876	31,165	'	'
Accrued interest receivable	9,833	9,652	'	'
Financial liabilities:	'	'	'	'
Deposits	3,121,198	3,274,963	'	'
Borrowed funds	38,169	28,945	'	'
Bonds payable	26,340	'	'	'
Accrued interest payable	3,254	1,099	'	'
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member]	'	'	'	'
Financial liabilities:	'	'	'	'
Bonds payable	'	'	'	'
Significant Unobservable Inputs (Level 3) [Member]	'	'	'	'
Financial liabilities:	'	'	'	'
Bonds payable	'	'	'	'
Significant Other Observable Inputs (Level 2) [Member]	'	'	'	'
Financial liabilities:	'	'	'	'
Bonds payable	26,340	'	'	'
Book Value [Member]	'	'	'	'
Financial assets:	'	'	'	'
Investment securities	806,926	920,088	'	'
Book Value [Member] | Quoted Prices in Active Markets for Identical Asset (Level 1) [Member]	'	'	'	'
Financial assets:	'	'	'	'
Cash and cash equivalents	502,445	500,887	'	'
Book Value [Member] | Significant Unobservable Inputs (Level 3) [Member]	'	'	'	'
Financial assets:	'	'	'	'
Loans held for sale	12,608	12,758	'	'
Loans, net	2,829,992	2,723,916	'	'
Reverse mortgage loans	40,095	-457	'	'
Financial liabilities:	'	'	'	'
Standby letters of credit	135	224	'	'
Book Value [Member] | Significant Other Observable Inputs (Level 2) [Member]	'	'	'	'
Financial assets:	'	'	'	'
Stock in Federal Home Loan Bank of Pittsburgh	33,876	31,165	'	'
Accrued interest receivable	9,833	9,652	'	'
Financial liabilities:	'	'	'	'
Deposits	3,121,198	3,274,963	'	'
Borrowed funds	874,615	637,266	'	'
Bonds payable	26,340	'	'	'
Accrued interest payable	3,254	1,099	'	'
Fair Value [Member]	'	'	'	'
Financial assets:	'	'	'	'
Investment securities	806,926	920,088	'	'
Fair Value [Member] | Quoted Prices in Active Markets for Identical Asset (Level 1) [Member]	'	'	'	'
Financial assets:	'	'	'	'
Cash and cash equivalents	502,445	500,887	'	'
Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member]	'	'	'	'
Financial assets:	'	'	'	'
Loans held for sale	12,608	12,758	'	'
Loans, net	2,818,832	2,746,001	'	'
Reverse mortgage loans	40,095	-457	'	'
Financial liabilities:	'	'	'	'
Standby letters of credit	135	224	'	'
Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member]	'	'	'	'
Financial assets:	'	'	'	'
Stock in Federal Home Loan Bank of Pittsburgh	33,876	31,165	'	'
Accrued interest receivable	9,833	9,652	'	'
Financial liabilities:	'	'	'	'
Deposits	2,912,952	3,174,907	'	'
Borrowed funds	874,534	638,375	'	'
Bonds payable	26,340	'	'	'
Accrued interest payable	$3,254	$1,099	'	'

Indemnifications_and_Guarantee1

Indemnifications and Guarantees - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
	Transactions	Transactions
	Financial_Institution
Guarantor Obligations [Line Items]	'	'
Number of unrelated financial institutions	3	'
Derivative transaction held for guarantee	104	95
Aggregate notional amount	$416.80	$381.70
Notional amount maturity period	'6 months	'
Notional amount maturity period	'11 years	'
Aggregate market value of swaps to customers	$24.20	$35.50
Minimum [Member]	'	'
Guarantor Obligations [Line Items]	'	'
Term period of loan	'15 years	'
Maximum [Member]	'	'
Guarantor Obligations [Line Items]	'	'
Term period of loan	'30 years	'

Associate_Employee_Benefit_Pla2

Associate (Employee) Benefit Plans - Schedule of Net Periodic Benefit Cost Components of Postretirement Benefits (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Postemployment Benefits [Abstract]	'	'	'	'
Service cost	$86	$72	$258	$216
Interest cost	44	44	132	131
Amortization of transition obligation	'	15	'	45
Net loss recognition	20	17	60	51
Net periodic benefit cost	$150	$148	$450	$443

Change_in_Accumulated_Other_Co2

Change in Accumulated Other Comprehensive Income - Components of Accumulated Other Comprehensive Income (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning Balance	($12,781)	$9,295	$12,943	$11,202
Other comprehensive income (loss) before reclassifications	-3,106	9,558	-27,249	17,165
Less: Amounts reclassified from accumulated other comprehensive loss	-190	-1,520	-1,771	-11,034
Total other comprehensive (loss) income	-3,296	8,038	-29,020	6,131
Ending Balance	-16,077	17,333	-16,077	17,333
Net Unrealized Losses on Defined Benefit Pension Plan [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning Balance	-472	-472	-472	-472
Other comprehensive income (loss) before reclassifications	'	'	'	'
Less: Amounts reclassified from accumulated other comprehensive loss	'	'	'	'
Total other comprehensive (loss) income	'	'	'	'
Ending Balance	-472	-472	-472	-472
Net Unrealized Gains on Investment Securities Available For Sale [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning Balance	-12,309	9,767	13,415	11,674
Other comprehensive income (loss) before reclassifications	-3,106	9,558	-27,249	17,165
Less: Amounts reclassified from accumulated other comprehensive loss	-190	-1,520	-1,771	-11,034
Total other comprehensive (loss) income	-3,296	8,038	-29,020	6,131
Ending Balance	($15,605)	$17,805	($15,605)	$17,805

Change_in_Accumulated_Other_Co3

Change in Accumulated Other Comprehensive Income - Components of Other Comprehensive Income (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Realized gains on securities transactions	$21,370	$14,737	$53,186	$36,461
Income taxes	-7,210	-4,758	-18,378	-12,708
Net Unrealized Gains on Investment Securities Available For Sale [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Realized gains on securities transactions	306	2,451	2,856	17,797
Income taxes	-116	-931	-1,085	-6,763
Net of tax	$190	$1,520	$1,771	$11,034

Goodwill_and_Intangibles_Addit

Goodwill and Intangibles - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]	'	'
Goodwill impairment loss	$0	'
Goodwill	32,395,000	28,146,000
Array Financial Group, Inc. [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets recognized	2,353,000	'
Goodwill	4,249,000	'
Other Intangible Assets [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Amortization expense on other intangible assets	$612,000	'

Goodwill_and_Intangibles_Summa

Goodwill and Intangibles - Summary of Other Intangible Assets (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Intangible Assets	$11,474	$8,834
Accumulated Amortization	-4,328	-3,660
Net Intangible Assets	7,146	5,174
Core deposits [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Intangible Assets	4,370	4,370
Accumulated Amortization	-2,458	-2,020
Net Intangible Assets	1,912	2,350
Other Intangible Assets [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Intangible Assets	7,104	4,464
Accumulated Amortization	-1,870	-1,640
Net Intangible Assets	$5,234	$2,824

Goodwill_and_Intangibles_Sched

Goodwill and Intangibles - Schedule of Estimated Amortization Expense of Intangibles (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Goodwill And Intangible Assets Disclosure [Abstract]	'	'
Remaining in 2013	$370	'
2014	1,171	'
2015	1,139	'
2016	882	'
2017	735	'
Thereafter	2,849	'
Net Intangible Assets	$7,146	$5,174

Business_Combinations_Addition

Business Combinations - Additional Information (Detail) (Array Financial Group, Inc. [Member], USD $)	9 Months Ended
	Sep. 30, 2013
Array Financial Group, Inc. [Member]	'
Business Acquisition [Line Items]	'
Total purchase price	$8,100,000
Payments for working capital	1,400,000
Earn out amount of purchase price	4,000,000
Earn out period	'5 years
Fair value of consideration paid	2,800,000
Intangible assets recognized	$2,353,000
Amortization period for intangible assets	'7 years

Business_Combinations_Summary_

Business Combinations - Summary of Combined Fair Value of Assets and Liabilities Acquired (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Consideration Paid:	'	'
Value of consideration	$4,189	'
Liabilities assumed:	'	'
Goodwill resulting from acquisition of Array and Arrow	32,395	28,146
Array Financial Group, Inc. [Member]	'	'
Consideration Paid:	'	'
Cash paid at closing	5,374	'
Fair value of contingent consideration	2,750	'
Value of consideration	8,124	'
Assets acquired:	'	'
Cash	1,185	'
Accounts receivable	220	'
Fixed assets	148	'
Loans-Held-For-Sale	10,096	'
Intangible assets	2,353	'
Total assets	14,002	'
Liabilities assumed:	'	'
Warehouse line of credit	10,067	'
Accounts payable	60	'
Total Liabilities	10,127	'
Net assets acquired	3,875	'
Goodwill resulting from acquisition of Array and Arrow	$4,249	'

Legal_Proceedings_Additional_I

Legal Proceedings - Additional Information (Detail) (USD $)	Jul. 31, 2013	Jul. 31, 2013	Sep. 30, 2013	Sep. 30, 2013
	Goldstein Case [Member]	Bennett Case [Member]	Minimum [Member]	Maximum [Member]
Gain Contingencies [Line Items]	'	'	'	'
Disputed amount	$5,000,000	$18,000,000	'	'
Reasonably possible losses for loan proceedings	'	'	$250,000	$5,000,000