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Risk Participation Agreements Sold [Member] Impairment losses related to goodwill Goodwill, Impairment Loss Commercial mortgages Commercial Mortgages [Member] Commercial Mortgages [Member] Accrued interest receivable Accrued interest receivable Interest Receivable Name Trading Arrangement, Individual Name Other liabilities Other liabilities, fair value Other Liabilities, Fair Value Disclosure Timing of Visa litigation resolution Measurement Input, Expected Term [Member] Company Selected Measure Amount Company Selected Measure Amount Cash in non-owned ATMs Cash In Non Owned ATMs Cash restricted for day-to-day operating needs of ATMS owned by Cash Connect customers. Unrealized loss on equity investments, net Unrealized loss on equity investments, net Equity Securities, FV-NI, Unrealized Gain (Loss) Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] (Increase) decrease in value of bank owned life insurance Life Insurance, Corporate or Bank Owned, Change in Value Loans evaluated on a collective basis Financing Receivable, Allowance for Credit Loss, Collectively Evaluated Weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Noninterest-bearing Total noninterest-bearing Noninterest-Bearing Deposit Liabilities, Domestic Depreciation of premises and equipment, net Depreciation, Nonproduction Noninterest expenses Noninterest expenses Noninterest Expense Award Timing Method Award Timing Method [Text Block] Remaining maturity period Derivative, Remaining Maturity Increase in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Net income attributable to WSFS Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Balance Sheet Location [Axis] Location, Statement of Financial Position, Balance [Axis] Provision Allowances For Credit Loss, Excluding Accrued Interest, Credit Loss Expense (Reversal) Allowances For Credit Loss, Excluding Accrued Interest, Credit Loss Expense (Reversal) Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Restatement Determination Date: Restatement Determination Date [Axis] Schedule of Components of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Other segment assets Other Unallocated Assets Other Unallocated Assets Schedule of Other Income Schedule Of Other Income [Table Text Block] Schedule Of Other income [Table Text Block] Other liabilities, measurement input, ( in USD per share) Other Liabilities, Measurement Input Other Liabilities, Measurement Input Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Charge-offs arising from transfer of loans to held for sale Accounts Receivable, Allowance for Credit Loss, Charge Off From Transfer Of Loans To Held For Sale Accounts Receivable, Allowance for Credit Loss, Charge Off From Transfer Of Loans To Held For Sale Statistical Measurement [Domain] Statistical Measurement [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Commercial Small Business Leases Commercial Small Business Leases [Member] Commercial Small Business Leases [Member] Schedule of Credit/Debit Card and ATM Income Schedule Of Card And ATM Fees [Table Text Block] Schedule Of Card and ATM Fees [Table Text Block] Total deposits Deposits Deposits Common stock $0.01 par value, 90,000,000 shares authorized; issued 76,678,219 at June 30, 2026 and 76,456,499 at December 31, 2025 Common Stock, Value, Issued SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Domain] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Domain] 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Unused commitments to extend credit Unused Commitments to Extend Credit Recoveries Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Restatement Determination Date Restatement Determination Date Percent of nonaccrual loans with no allowance Financing Receivable, Excluding Accrued Interest, Nonaccrual, Percent Past Due Net change in investment securities held-to-maturity AOCI, Accumulated Gain (Loss), Debt Securities, Held-To-Maturity, Parent [Member] AOCI, Accumulated Gain (Loss), Debt Securities, Held-To-Maturity, Parent Interest on Federal Home Loan Bank advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-Term Other operating expense Other Noninterest Expense Total Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months Beginning balance Ending balance Allowance for credit losses related to other accounts receivable Accounts Receivable, Allowance for Credit Loss Amendment Flag Amendment Flag Goodwill [Line Items] Goodwill [Line Items] Provision Accounts Receivable, Credit Loss Expense (Reversal) Tax-exempt Interest and Dividend Income Securities Tax Exempt Interest and dividend income securities tax exempt. Disposal Group Classification [Axis] Disposal Group Classification [Axis] Gross Unrealized Loss Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax INVESTMENT SECURITIES Investment [Text Block] Schedule of Debt Securities, Available-for-sale Debt Securities, Available-for-Sale [Table Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Investments [Domain] Investments [Domain] Combination- Term Extension and Payment Delay Combination Term Extension and Payment Delay [Member] Combination Term Extension and Payment Delay Student loans Student Loan [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Credit Rating, Fitch [Axis] Credit Rating, Fitch [Axis] Entity Address, State or Province Entity Address, State or Province Nonaccrual Loans With An Allowance Financing Receivable, Excluding Accrued Interest, Nonaccrual PEO Total Compensation Amount PEO Total Compensation Amount Carrying value of investment in affordable housing credits Investment, Proportional Amortization Method, Elected, Amount Capital expenditures for the period ended Segment Reporting, Long-Lived Asset, Expenditure for Addition Notional Derivative, Notional Amount Basic (in shares) Weighted average basic shares (in shares) Weighted Average Number of Shares Outstanding, Basic Loss Contingencies [Line Items] Loss Contingencies [Line Items] Other real estate owned, measurement input Other Real Estate Owned, Measurement Input 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Interest-bearing deposits in other banks including collateral (restricted cash) of $2,480 at June 30, 2026 and $6,530 at December 31, 2025 Interest-Bearing Deposits in Banks and Other Financial Institutions Unfunded Lending Commitment Unfunded Loan Commitment [Member] Period-end allowance allocated to: Financing Receivable, Period-End Allowance Allocated To [Abstract] Financing Receivable, Period-End Allowance Allocated To [Abstract] After five years but within ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Purchase of derivatives Derivative Acquired During Period, Premium Amount Derivative Acquired During Period, Premium Amount Decrease in accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Total non interest income Noninterest income Noninterest Income Noninterest income Revenue from Contract with Customer, Including Assessed Tax Charge-offs arising from transfer of loans to held for sale Charge-offs arising from transfer of loans to held for sale Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Charge-Off From Transfer Of Loans To Held For Sale Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Charge-Off From Transfer Of Loans To Held For Sale Purchases of stock of Federal Home Loan Bank of Pittsburgh Payments to Acquire Federal Home Loan Bank Stock LOANS AND LEASES Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Net income attributable to WSFS, basic Net Income (Loss) Available to Common Stockholders, Basic Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Sublease income Sublease Income Receivable [Domain] Receivable [Domain] Percent of nonaccrual loans with an allowance Financing Receivable, Excluding Accrued Interest, Nonaccrual, With Allowance, Percent Past Due Financing Receivable, Excluding Accrued Interest, Nonaccrual, With Allowance, Percent Past Due Loans and leases, net of allowance for credit losses of $177,263 at June 30, 2026 and $179,647 at December 31, 2025 Net loans and leases Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Non-controlling Interest Noncontrolling Interest [Member] Net unrealized gain (loss) arising during the period, net of tax expense (benefit) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Loans Modified Loans Modified [Member] Loans Modified Year three, current fiscal year amortized cost Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year Net cash (used in) provided by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Unrecognized tax benefits Unrecognized Tax Benefits Post Collateral on derivative Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset After five years but within ten years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Security Exchange Name Security Exchange Name Amortized Cost Amortized cost Past due held-to-maturity debt securities Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss Ending balance Total Loans Financing Receivable, before Allowance for Credit Loss Cash paid during the period for: Cash Paid During The Period For [Abstract] Cash Paid During The Period For Available-for-sale debt securities, 12 months or longer, Fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Name Outstanding Recovery, Individual Name Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] ATM loss protection ATM Insurance [Member] ATM Insurance [Member] Other investments Other Investment Companies [Member] Indefinite-lived trademark Intangible Asset, Excluding Goodwill, Indefinite-Lived Change in Unrecognized Tax Benefit, Reasonably Possible [Table] Change in Unrecognized Tax Benefit, Reasonably Possible [Table] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Amortization of net unrealized losses on available-for-sale securities reclassified to held-to-maturity, net of tax expense of $917, $1,032, $1,822, and $2,038, respectively OCI, Debt Securities, Available-for-Sale, Transfer from Held-to-Maturity, Gain (Loss), before Adjustment, after Tax Commitments of lending operations Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure Amounts reclassified from accumulated other comprehensive loss Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Schedule of Investments [Table] Schedule of Investments [Table] Gain on sale of credit card portfolio Gains (Losses) on Sales of Credit Card Portfolio Within one year Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Aggregate fair value of swaps to customers Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value Non-cash information: Noncash Investing and Financing Items [Abstract] Net change in defined benefit plan Amortization of defined benefit pension plan-related items: Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Repayments of FHLB advances Payments of FHLBank Borrowings, Financing Activities Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted (in shares) Weighted average fully diluted shares (in shares) Weighted Average Number of Shares Outstanding, Diluted Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Charge-offs arising from transfer of loans to held for sale Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Allowance for Credit Loss, Charge Off From Transfer Of Loans To Held For Sale Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Allowance for Credit Loss, Charge Off From Transfer Of Loans To Held For Sale Entity Emerging Growth Company Entity Emerging Growth Company Unaccreted discounts Available For Sale Securities Unamortized Discount Available For Sale Securities Unamortized Discount Gross loans Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss Underlying Security Market Price Change Underlying Security Market Price Change, Percent DERIVATIVE FINANCIAL INSTRUMENTS Derivative Instruments and Hedging Activities Disclosure [Text Block] % of Total Loans Percentage Of Financing Receivable Gross Carrying Amount Percentage Of Financing Receivable Gross Carrying Amount Gross Unrealized Loss Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Less: Interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Total Financing Receivable, Modified in Period, Amount Credit/debit card and ATM income Total credit/debit card and ATM income Credit and Debit Card [Member] Treasury Stock Treasury Stock, Common [Member] Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Money market Interest-Bearing Domestic Deposit, Money Market Interest Rate Reduction Interest Rate Below Market Reduction [Member] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Indefinite-lived Intangible Assets, Major Class Name [Domain] Intangible Asset, Indefinite-Lived, Class [Domain] Total lease payments Lessee, Operating Lease, Liability, to be Paid Year three, current fiscal year charge offs Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff Collateral Held [Domain] Collateral Held [Domain] All Executive Categories All Executive Categories [Member] Interest rate lock commitments with Clients Interest Rate Lock Commitments [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Combination - Payment Delay and Interest Rate Reduction Combination Payment Delay And Interest Rate Reduction [Member] Combination Payment Delay And Interest Rate Reduction Schedule of Investment Securities' Gross Unrealized Losses and Fair Value by Investment Category Securities Continuous Unrealized Loss Position Fair Value [Table Text Block] Securities Continuous Unrealized Loss Position Fair Value [Table Text Block] Reverse mortgage, fair value Reverse Mortgage, Fair Value Reverse Mortgage, Fair Value External Credit Rating, Fitch [Domain] External Credit Rating, Fitch [Domain] SBA Loans SBA Loans [Member] SBA loans. Net change in unfunded pension liability Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Data processing and operations expenses Information Technology and Data Processing Schedule of Computation of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] SEGMENT INFORMATION Segment Reporting [Text Block] Repayments, maturities and calls of investment securities available-for-sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Direct Financing Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Direct Financing Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Liabilities: Financial liabilities: Liabilities [Abstract] Schedule of Estimated Amortization Expense of Intangibles Intangible Asset, Finite-Lived, Amortization Expense [Table Text Block] Weighted average shares of common stock outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Amortization of low-income housing credit investments reflected as income tax expense Investment Program, Proportional Amortization Method, Applied, Amortization Expense Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Taxable Interest And Dividend Income Securities Taxable Interest and dividend income securities taxable. Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Fannie Mae (FNMA) mortgage-backed securities (MBS) FNMA MBS Federal National Mortgage Association Certificates and Obligations (FNMA) [Member] Loans and leases, net Financing Receivable, Accrued Interest, after Allowance for Credit Loss Other liabilities Other Liabilities Held-to-Maturity Debt Securities Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Redemptions of stock of Federal Home Loan Bank of Pittsburgh Proceeds from Sale of Federal Home Loan Bank Stock Common stock, shares authorized (in shares) Common Stock, Shares Authorized Amortization Period Intangible Asset, Finite-Lived, Useful Life Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] After ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Loans evaluated on an individual basis Financing Receivable, Individually Evaluated for Credit Loss Exercise Price Award Exercise Price Investment securities, held-to-maturity, net of allowance for credit losses of $5 at June 30, 2026 and December 31, 2025 (fair value $845,831 at June 30, 2026 and $879,066 at December 31, 2025) Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss Assets measured at fair value on a recurring basis: Fair Value, Recurring [Member] Segment Reporting [Line Items] Segment Reporting [Line Items] Other assets, net of allowance for credit losses Contract with Customer, Asset, Allowance for Credit Loss, Noncurrent Document Quarterly Report Document Quarterly Report Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Interchange fees Interchange Fees [Member] Interchange Fees [Member] State and political subdivisions US States and Political Subdivisions Debt Securities [Member] Special mention Special Mention [Member] Year four, current fiscal year charge offs Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff Sale of investment securities available-for-sale Proceeds from Sale of Debt Securities, Available-for-Sale Accrued interest payable Interest Payable Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity Component [Domain] Equity Component [Domain] Measurement Input Type [Domain] Measurement Input Type [Domain] Adoption Date Trading Arrangement Adoption Date Counterparty Name [Domain] Counterparty Name [Domain] More-Than-Insignificant Payment Delay Weighted Average, More Than Insignificant Payment Delay For Modified Loans, Percentage Weighted Average, More Than Insignificant Payment Delay For Modified Loans, Percentage CDS Spread and Loss Given Default (LGD) Measurement Input, Loss Given Default [Member] Measurement Input, Loss Given Default Equity method investment tax benefit (expense) Other Comprehensive Income (Loss), Equity Method Investment, Tax Other Comprehensive Income (Loss), Equity Method Investment, Tax Fair value Equity Securities, FV-NI, Current WSFS Bank WSFS Bank [Member] WSFS Bank [Member] Interest income on lease receivables Direct Financing Lease, Interest Income, Lease Receivable Direct Financing Lease, Interest Income, Lease Receivable Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Lease liabilities Present value of lease liabilities Operating Lease, Liability Investment securities, held-to-maturity, allowance for credit losses Fair Value Fair value Debt Securities, Held-to-Maturity, Fair Value Schedule of Direct Financing Leases Direct Financing Lease, Lease Income [Table Text Block] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Loans Receivable Loans Receivable [Member] Commercial Commercial Portfolio Segment [Member] Redemption of subordinated debt Repayments of Debt Amortized cost basis of non accruing collateral-dependent loans Collateral Dependent Loans Receivable At Amortized Cost Basis Collateral Dependent Loans Receivable At Amortized Cost Basis COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Financial Asset, Period Past Due [Domain] Financial Asset, Aging [Domain] Assets measured at fair value on a nonrecurring basis: Assets, Fair Value, Nonrecurring Basis [Abstract] Assets, Fair Value, Nonrecurring Basis [Abstract] Interest and dividends on investment securities: Interest and Dividend Income, Securities, by Classification [Abstract] Weighted Average Weighted Average [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] Noninterest demand Noninterest-Bearing Domestic Deposit, Demand Core deposits Core Deposits [Member] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Residential Residential Portfolio Segment [Member] Stockholders’ Equity: Equity, Attributable to Parent [Abstract] Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Private Wealth Management Private Wealth Management [Member] Private Wealth Management Loans transferred to portfolio from held for sale at fair value Transfers Out (Transfers In) Loans Between Portfolio Loans And Leases To Held For Sale Transfers of loans between portfolio loans and leases to held for sale. Inter-Segment Eliminations Intersegment Eliminations [Member] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Intangible Asset, Finite-Lived Intangible Asset, Finite-Lived [Table Text Block] City Area Code City Area Code Prior service credits Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Loan servicing rights Loan Servicing Rights [Member] Loan Servicing Rights [Member] Amortization of right-of-use lease assets Operating Lease, Right-of-Use Asset, Periodic Reduction Property Other Property [Member] Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Loans evaluated on a collective basis Financing Receivable, Collectively Evaluated for Credit Loss Entity [Domain] Entity [Domain] Total interest income Interest income Interest and Dividend Income, Operating Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] After ten years Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 (Increase) decrease in other assets Increase (Decrease) in Other Operating Assets After five years but within ten years Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 5 through 10 Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Within one year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Unearned income Direct Financing Lease, Unearned Income Direct Financing Lease, Unearned Income Revolving loans amortized cost basis charge offs Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff Net change in investment securities available-for-sale Net unrealized holding losses on securities transferred between available-for-sale and held-to-maturity: AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Schedule of Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Net unrealized (losses) gains arising during the period, net of tax (benefit) expense of $(2,733), $7,165, $(5,488), and $29,282, respectively OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Issuance of common stock including proceeds from exercise of common stock options Issuance Of Common Stock Including Proceeds From Exercise Of Common Stock Options Issuance Of Common Stock Including Proceeds From Exercise Of Common Stock Options Loss contingency value Loss Contingency, Damages Paid, Value Schedule of Investment Management and Fiduciary Income Schedule Of Investment Management And Fiduciary Income [Table Text Block] Schedule Of Investment Management And Fiduciary Income [Table Text Block] Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Charge-offs Accounts Receivable, Allowance for Credit Loss, Writeoff Term Extension Financing Receivable, Modified, Weighted-Average Term Increase from Modification Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Premises and equipment Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Other interest income Other Interest and Dividend Income Financial Instruments [Domain] Financial Instruments [Domain] Leasing receivables Direct Financing Lease, Net Investment in Lease, before Allowance for Credit Loss [Abstract] Year five, current fiscal year amortized cost Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Derivative asset Derivative Asset Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Assets measured at fair value on a recurring basis: Assets, Fair Value, Recurring Basis [Abstract] Assets, Fair Value, Recurring Basis [Abstract] GOODWILL AND INTANGIBLE ASSETS Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount Fair Value Estimate of Fair Value Measurement [Member] NONINTEREST INCOME Revenue from Contract with Customer [Text Block] Combination- Term Extension and Interest Rate Reduction Extended Maturity and Interest Rate Reduction [Member] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Segment Reporting [Table] Segment Reporting [Table] Count Derivative, Number of Instruments Held Number of leases not yet commenced Lessee, Operating Lease, Lease Not yet Commenced, Number Of Leases Lessee, Operating Lease, Lease Not yet Commenced, Number Of Leases Investing activities: Cash Provided by (Used in) Investing Activity, Continuing Operation [Abstract] Cash Cash [Member] Schedule of Lease Cost Lease, Cost [Table Text Block] Net change in other comprehensive income of equity method investments, net of tax benefit of $18, $5, $23, and $206, respectively OCI, Equity Method Investment, after Tax Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Available-for-sale debt securities, Less than 12 months, Fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Schedule of Financial Instruments Carried at Fair Value Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Deposits Liabilities, Balance Sheet, Reported Amounts [Abstract] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Swap Guarantee Swap Guarantee [Member] Swap Guarantee Current Fiscal Year End Date Current Fiscal Year End Date Schedule of Held-to-Maturity Credit Quality Indicators Debt Securities, Held-to-Maturity, Credit Quality Indicator [Table Text Block] Gain on sale of WSFS Wealth Management, LLC business Gain (Loss) on Disposition of Business Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Loans repurchase amount Financing Receivable, Loans Repurchased, Value Financing Receivable, Loans Repurchased, Value Provision Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) Derivative [Line Items] Derivative [Line Items] Costs to sell Measurement Input, Cost to Sell [Member] Estimated future lease payments amount Unrecorded Unconditional Purchase Obligation Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Schedule of Maturities of Investment Securities Available-for-Sale and Held-to-Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Available for sale securities transfers to held to maturity unrealized losses Debt Securities, Available-For-Sale, Transfers To Held To Maturity Unrealized Gains (Losses) Debt Securities, Available-For-Sale, Transfers To Held To Maturity Unrealized Gains (Losses) Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Senior debt Senior Notes Measure: Measure [Axis] Treasury stock, shares (in shares) Treasury Stock, Common, Shares Equity Components [Axis] Equity Components [Axis] Income taxes Income Tax Paid, after Refund Received First Mortgage First Mortgage [Member] Entity Interactive Data Current Entity Interactive Data Current Less: Net loss attributable to noncontrolling interest Less: Net loss attributable to noncontrolling interest Net loss attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Collateral value against obligations Derivative Asset, Fair Value of Collateral After one year but within five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Available for Sale, Fair Value Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Entity Small Business Entity Small Business Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Shares withheld for tax liabilities (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Net interest income Interest Income (Expense), Operating MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Financing activities: Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract] Document Type Document Type After ten years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Intangible Asset, Indefinite-Lived Intangible Asset, Indefinite-Lived [Table Text Block] Allowance for Credit Losses Allowance for credit losses Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Impairment of other intangible assets Intangible Asset, Excluding Goodwill, Impairment Loss Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Income from mortgage banking activities, net Mortgage Banking Revenue Net Mortgage Banking Revenue Net Income before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Net change in unrealized (losses) gains on investment securities available-for-sale OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four 30–89 Days Past Due and Still  Accruing Financial Asset, 30 To 89 Days Past Due [Member] Financial Asset, 30 To 89 Days Past Due After 2030 Lessee, Operating Lease, Liability, To Be Paid, After Year Four Lessee, Operating Lease, Liability, To Be Paid, After Year Four Executive Category: Executive Category [Axis] Receivable Type [Axis] Receivable Type [Axis] Nonaccrual Loans Nonaccrual [Member] Nonaccrual Counterparty Name [Axis] Counterparty Name [Axis] Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Miscellaneous products and services Miscellaneous Products And Services [Member] Miscellaneous Products And Services [Member] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] PEO Name PEO Name Net change in fair value of derivatives used for cash flow hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Amount of Gain (Loss) Recognized in OCI Included Component Other Comprehensive Income (Loss), Derivative, Included Component, Increase (Decrease), before Adjustments and Tax Other Comprehensive Income (Loss), Derivative, Included Component, Increase (Decrease), before Adjustments and Tax Other segment items Segment Reporting, Other Segment Item, Amount Client time deposits Interest-Bearing Domestic Deposit, Time Deposits Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Interest-bearing: Interest-Bearing Deposit Liabilities, Domestic, by Component [Abstract] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Cash and due from banks Cash and Due from Banks Amortization of net unrealized losses to income during the period Interest and Dividend Income, Securities, Operating Other Accounts Receivable Accounts Receivable, Allowance for Credit Loss [Roll Forward] Schedule of Nonaccrual and Past Due Loans Financing Receivable, Past Due [Table Text Block] Accruing Current Balances Accruing Current Balances Financial Asset, Not Past Due [Member] Net unrealized (loss) gain arising during the period, net of tax (benefit) expense of $(1,971), $455, $(2,631), and $1,363, respectively Amount of Gain (Loss) Recognized in OCI on Derivative Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Measurement Frequency [Domain] Measurement Frequency [Domain] Savings Interest-Bearing Domestic Deposit, Savings Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Interest expense: Interest Expense, Operating and Nonoperating [Abstract] Salaries, benefits and other compensation Transition obligation Labor and Related Expense Net lease cost Lease, Cost Repurchase of noncontrolling interest Payments for Repurchase of Redeemable Noncontrolling Interest Repayments, maturities and calls of investment securities held-to-maturity Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Schedule of Fair Values of Derivative Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic (in dollars per share) Earnings Per Share, Basic Measurement Input Type [Axis] Measurement Input Type [Axis] Not rated Fitch, Not Rated [Member] Fitch, Not Rated Insider Trading Arrangements [Line Items] Various Modifications Various Modifications [Member] Various Modifications External Customers External Customers [Member] External Customers Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Other borrowed funds Other Borrowings Fair Value Measurement [Domain] Fair Value Measurement [Domain] Recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery A+ rated or higher Fitch, A+ Rating [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover page. Cover [Abstract] Commercial and Industrial Commercial And Industrial [Member] Commercial And Industrial [Member] Service fees Service Fees [Member] Service Fees [Member] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Year two, current fiscal year charge offs Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Equity Awards Adjustments Equity Awards Adjustments [Member] Increase (decrease) in other liabilities Increase (Decrease) in Other Operating Liabilities Revolving loans converted to term gross charge offs Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff Pass Pass [Member] Schedule of Loan and Lease Portfolio by Category Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Trust preferred borrowings Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust Total Stockholders' Equity of WSFS Parent [Member] Interest-bearing deposits in banks and other financial institutions, collateral Interest-Bearing Deposits In Banks And Other Financial Institutions, Collateral Interest-Bearing Deposits In Banks and Other Financial Institutions, Collateral Schedule of Collateral Dependent Loans Schedule Of Collateral Dependent Loans [Table Text Block] Schedule Of Collateral Dependent Loans Impairment loans, charge off period Loan Charge Off To Be Recorded Maximum Period Loan Charge Off To Be Recorded Maximum Period Corporate development expense Corporate Development Costs Corporate Development Costs Hedging Designation [Domain] Hedging Designation [Domain] Percent past due Financing Receivable, Percent Past Due Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Proceeds from sale of credit card portfolio Proceeds From Sale Of Credit Card Portfolio Proceeds From Sale Of Credit Card Portfolio FX forwards Foreign Exchange Forward [Member] Repurchase of noncontrolling interest Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Cash Connect Cash Connect Segment [Member] Cash Connect [Member] Provision Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal) Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Schedule of Debt Securities, Held-to-maturity Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table Text Block] INCOME TAXES Income Tax Disclosure [Text Block] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Interest on senior debt Interest Expense, Senior Debt Interest Expense, Senior Debt Entity Filer Category Entity Filer Category Available-for-sale debt securities, Total, Fair value Debt Securities, Available-for-Sale, Unrealized Loss Position WSFS Bank WSFS Bank Segment [Member] WSFS Bank [Member] Currency preparation Currency Preparation [Member] Currency Preparation [Member] Financial Asset, Period Past Due [Axis] Financial Asset, Aging [Axis] Derivatives not designated as hedging instruments: Not Designated as Hedging Instrument [Member] Affordable housing tax benefits Affordable Housing Tax Benefits Amount Affordable housing tax benefits amount. Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Deposits: Deposits [Abstract] Net income (loss) Net income Net income (loss) Consolidated net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Derivative liability Derivative Liability ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY INFORMATION Allowance For Credit Losses And Credit Quality [Text Block] Allowance For Credit Losses And Credit Quality [Text Block] Actuarial gains Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Entity Address, Address Line One Entity Address, Address Line One Impairment loss Intangible Asset, Finite-Lived, Impairment Loss Held to Maturity, Fair Value Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Income tax provision Income tax provision Income taxes Income Tax Expense (Benefit) Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Basis of Presentation Consolidation, Policy [Policy Text Block] Accretion of fees and discounts, net Amortization Of Debt Issuance Costs And Discounts, Net Amortization Of Debt Issuance Costs And Discounts, Net Charge-offs Charge-offs Total charge offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Numerator: Net Income (Loss) Attributable to Parent [Abstract] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Statement [Table] Statement [Table] Year two, current fiscal year amortized cost Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Loans held for sale Loans, held for sale Loan, Held-for-Sale, Fair Value Disclosure Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items] Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items] Claim seeks damages in an amount Loss Contingency, Damages Sought, Value Recoveries Accounts Receivable, Allowance for Credit Loss, Recovery BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Significant Accounting Policies [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]