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investments Accumulated Equity Method Investments, Parent [Member] Accumulated Equity Method Investments, Parent Total deposits Deposits Deposits Additions to other significant pending legal or other proceedings Additions To Other Significant Pending Legal Or Other Proceedings Additions To Other Significant Pending Legal Or Other Proceedings Common stock $0.01 par value, 90,000,000 shares authorized; issued 76,699,090 at September 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 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Investment securities, held-to-maturity, net of allowance for credit losses of $5 at September 30, 2026 and December 31, 2025 (fair value $770,479 at September 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] State and political subdivisions US States and Political Subdivisions Debt Securities [Member] Special mention Special Mention [Member] Year four, current 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Awards Vested in Covered Year [Member] Entity File Number Entity File Number 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) Schedule of Maturities of Investment Securities Available-for-Sale and Held-to-Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Net change in securities held-to-maturity Other Comprehensive Income Held To Maturity Securities Adjustment Net Of Tax Period Increase Decrease [Abstract] Other Comprehensive Income Held To Maturity Securities Adjustment Net Of Tax Period Increase Decrease [Abstract] 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 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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 Proceeds from bank-owned life insurance death benefit Proceeds From Bank-Owned Life Insurance, Death Benefit Proceeds From Bank-Owned Life Insurance, Death Benefit Repayments, 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Fitch, A+ Rating [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover page. Cover [Abstract] 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 Schedule of Deposit Service Charges Schedule Of Deposit Service Charges [Table Text Block] Schedule Of Deposit Service Charges [Table Text Block] Equity Awards Adjustments Equity Awards Adjustments [Member] 30-89 Days Past Due and Still Accruing Financing Receivables 30 To 89 Days Past Due [Member] Financing Receivables 30 To 89 Days Past Due Cash Connect Cash Connect Segment [Member] Cash Connect [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 Provision for credit losses Financing Receivable, Accounts Receivable, And Debt Securities Held To Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal) Financing Receivable, Accounts Receivable, And Debt Securities Held To Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal) Total Stockholders' Equity of WSFS Parent [Member] Currency preparation Currency Preparation [Member] Currency Preparation [Member] Hedging Designation [Domain] Hedging Designation [Domain] Percent past due Financing Receivable, Percent Past Due Thereafter Finite-Lived Intangible Asset, Expected Amortization, After Year Four Finite-Lived Intangible Asset, Expected Amortization, After Year Four Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Various Modifications Various Modifications [Member] Various Modifications FX forwards Foreign Exchange Forward [Member] Repurchase of noncontrolling interest Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Corporate development expense Corporate Development Costs Corporate Development Costs Provision Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal) Schedule of Collateral Dependent Loans Schedule Of Collateral Dependent Loans [Table Text Block] Schedule Of Collateral Dependent Loans 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] Entity Filer Category Entity Filer Category Available-for-sale debt securities, Total, Fair value Debt Securities, Available-for-Sale, Unrealized Loss Position Provision Allowances For Credit Loss, Excluding Accrued Interest, Credit Loss Expense (Reversal) Allowances For Credit Loss, Excluding Accrued Interest, Credit Loss Expense (Reversal) Financial Asset, Period Past Due [Axis] Financial Asset, Aging [Axis] Derivatives not designated as hedging instruments: Not Designated as Hedging Instrument [Member] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Deposits: Deposits [Abstract] Net income Net income Net income Consolidated net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Derivative liability Derivative Liability 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] 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] 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. Year two, current fiscal year amortized cost Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Commercial Small Business Leases Commercial Small Business Leases [Member] Commercial Small Business Leases [Member] Interest on senior debt Interest Expense, Senior Debt Interest Expense, Senior Debt 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]