Business and Basis of Presentation	12 Months Ended
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BUSINESS AND BASIS OF PRESENTATION	1. BUSINESS AND BASIS OF PRESENTATION Organization WSFS Financial Corporation (the Company or as a consolidated institution, WSFS, we, our or us) is a savings and loan holding company organized under the laws of the State of Delaware. Substantially all of our assets are held by the Company’s subsidiary, Wilmington Savings Fund Society, FSB (WSFS Bank or the Bank), is a federal savings bank organized under the laws of the United States (U.S.). Founded in 1832, the Bank is one of the ten oldest bank and trust companies in the U.S. continuously operating under the same name. We provide residential and commercial real estate, commercial and consumer lending services, as well as retail deposit and cash management services. Our core banking business is commercial lending funded by customer-generated deposits. In addition, we offer a broad variety of wealth management and trust services to personal and corporate customers. The Federal Deposit Insurance Corporation (FDIC) insures our customers’ deposits to their legal maximums. We serve our customers primarily from our 76 offices located in Delaware (45), Pennsylvania (29), Virginia (1), and Nevada (1) and through our website at www.wsfsbank.com. Information on our website is not incorporated by reference into this Annual Report on Form 10-K. The Consolidated Financial Statements are prepared in conformity with accounting principles generally accepted in the U.S. (GAAP). In preparing the Consolidated Financial Statements, we are required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses. Although our estimates contemplate current conditions and how we expect them to change in the future, it is reasonably possible that actual conditions in 2019 could be worse than anticipated in those estimates, which could materially affect our results of operations and financial condition. The accounting for the allowance for loan losses and reserves for lending related commitments, goodwill, intangible assets, post-retirement benefit obligations, the fair value of financial instruments, income taxes and other than temporary impairment (OTTI) is subject to significant estimates. Among other effects, changes to these estimates could result in future impairment of investment securities, goodwill and intangible assets and the establishment of the allowance and lending related commitments as well as increased post-retirement benefits expense. Basis of Presentation Our Consolidated Financial Statements include the accounts of the Company, WSFS Bank, Cypress Capital Management, LLC (Cypress), WSFS Wealth Management, LLC (Powdermill), WSFS Capital Management, LLC (West Capital), and Christiana Trust Company of Delaware (Christiana Trust DE). We also have one unconsolidated subsidiary, WSFS Capital Trust III (the Trust). WSFS Bank has three wholly-owned subsidiaries: WSFS Wealth Investments, 1832 Holdings, Inc. and Monarch Entity Services LLC (Monarch). Cypress was formed to provide asset management services. As a registered investment advisor and Wilmington-based fee-only wealth management firm, Cypress has approximately $948.8 million in assets under management (AUM) at December 31, 2018, compared to approximately $901.5 million at December 31, 2017. Powdermill was formed in 2016 as a result of our acquisition of Powdermill Financial Solutions, LLC to provide multi-family office services to affluent clientele in the local community and throughout the U.S. West Capital was formed in 2016 as a result of our acquisition of West Capital Management, Inc. to provide fee-only wealth management services tailored to the needs of high net worth individuals operating under a multi-family office philosophy. West Capital has approximately $695.5 million in AUM at December 31, 2018, compared to approximately $861.2 million at December 31, 2017. Christiana Trust DE was formed in 2017 to supplement our existing Wealth Management segment by offering Delaware Advantage trust services including directed trusts, asset protection trusts and dynasty trusts. The Trust is our unconsolidated subsidiary, and was formed in 2005 to issue $67.0 million aggregate principal amount of Pooled Floating Rate Capital Securities. These securities are callable and have a maturity date of June 1, 2035. The proceeds from this issue were used to fund the redemption of $51.5 million Floating Rate WSFS Capital Trust I Preferred Securities (formerly, WSFS Capital Trust I). WSFS Capital Trust I invested all of the proceeds from the sale of the Pooled Floating Rate Capital Securities in our Junior Subordinated Debentures. WSFS Wealth Investments markets various third-party investment and insurance products to Bank customers through the Bank’s retail banking system. 1832 Holdings, Inc. was formed to hold certain debt and equity investment securities. Monarch provides commercial domicile services which include providing employees, directors, subleases of office facilities and registered agent services in Delaware and Nevada. Certain reclassifications have been made to the prior year’s Consolidated Financial Statements to conform to the current year’s presentation. All significant intercompany accounts and transactions were eliminated in consolidation. Business Combinations On August 7, 2018, WSFS and Beneficial Bancorp, Inc. (Beneficial) entered into an Agreement and Plan of Reorganization (as amended from time to time, the Merger Agreement), pursuant to which, subject to the terms and conditions of the Merger Agreement, among other things, (i) Beneficial will merge with and into WSFS, with WSFS continuing as the surviving corporation (the “Merger”) and (ii) simultaneously, Beneficial Bank will merge with and into WSFS Bank, with WSFS Bank continuing as the surviving bank (the “Bank Merger” and, together with the Merger, the “Mergers”). Subject to the terms and conditions of the Merger Agreement, stockholders of Beneficial will receive 0.3013 shares of WSFS common stock and $2.93 in cash for each share of Beneficial common stock. Approvals from both WSFS and Beneficial shareholders were received in December 2018. The Mergers, which are subject to customary closing conditions, are expected to close on March 1, 2019.

1. BUSINESS AND BASIS OF PRESENTATION

Organization

WSFS Financial Corporation (the Company or as a consolidated institution, WSFS, we, our or us) is a savings and loan holding company organized under the laws of the State of Delaware. Substantially all of our assets are held by the Company’s subsidiary, Wilmington Savings Fund Society, FSB (WSFS Bank or the Bank), is a federal savings bank organized under the laws of the United States (U.S.). Founded in 1832, the Bank is one of the ten oldest bank and trust companies in the U.S. continuously operating under the same name. We provide residential and commercial real estate, commercial and consumer lending services, as well as retail deposit and cash management services. Our core banking business is commercial lending funded by customer-generated deposits. In addition, we offer a broad variety of wealth management and trust services to personal and corporate customers. The Federal Deposit Insurance Corporation (FDIC) insures our customers’ deposits to their legal maximums. We serve our customers primarily from our 76 offices located in Delaware (45), Pennsylvania (29), Virginia (1), and Nevada (1) and through our website at www.wsfsbank.com. Information on our website is not incorporated by reference into this Annual Report on Form 10-K.

The Consolidated Financial Statements are prepared in conformity with accounting principles generally accepted in the U.S. (GAAP). In preparing the Consolidated Financial Statements, we are required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses. Although our estimates contemplate current conditions and how we expect them to change in the future, it is reasonably possible that actual conditions in 2019 could be worse than anticipated in those estimates, which could materially affect our results of operations and financial condition. The accounting for the allowance for loan losses and reserves for lending related commitments, goodwill, intangible assets, post-retirement benefit obligations, the fair value of financial instruments, income taxes and other than temporary impairment (OTTI) is subject to significant estimates. Among other effects, changes to these estimates could result in future impairment of investment securities, goodwill and intangible assets and the establishment of the allowance and lending related commitments as well as increased post-retirement benefits expense.

Basis of Presentation

Our Consolidated Financial Statements include the accounts of the Company, WSFS Bank, Cypress Capital Management, LLC (Cypress), WSFS Wealth Management, LLC (Powdermill), WSFS Capital Management, LLC (West Capital), and Christiana Trust Company of Delaware (Christiana Trust DE). We also have one unconsolidated subsidiary, WSFS Capital Trust III (the Trust). WSFS Bank has three wholly-owned subsidiaries: WSFS Wealth Investments, 1832 Holdings, Inc. and Monarch Entity Services LLC (Monarch).

Cypress was formed to provide asset management services. As a registered investment advisor and Wilmington-based fee-only wealth management firm, Cypress has approximately $948.8 million in assets under management (AUM) at December 31, 2018, compared to approximately $901.5 million at December 31, 2017.

Powdermill was formed in 2016 as a result of our acquisition of Powdermill Financial Solutions, LLC to provide multi-family office services to affluent clientele in the local community and throughout the U.S.

West Capital was formed in 2016 as a result of our acquisition of West Capital Management, Inc. to provide fee-only wealth management services tailored to the needs of high net worth individuals operating under a multi-family office philosophy. West Capital has approximately $695.5 million in AUM at December 31, 2018, compared to approximately $861.2 million at December 31, 2017.

Christiana Trust DE was formed in 2017 to supplement our existing Wealth Management segment by offering Delaware Advantage trust services including directed trusts, asset protection trusts and dynasty trusts.

The Trust is our unconsolidated subsidiary, and was formed in 2005 to issue $67.0 million aggregate principal amount of Pooled Floating Rate Capital Securities. These securities are callable and have a maturity date of June 1, 2035. The proceeds from this issue were used to fund the redemption of $51.5 million Floating Rate WSFS Capital Trust I Preferred Securities (formerly, WSFS Capital Trust I). WSFS Capital Trust I invested all of the proceeds from the sale of the Pooled Floating Rate Capital Securities in our Junior Subordinated Debentures.

WSFS Wealth Investments markets various third-party investment and insurance products to Bank customers through the Bank’s retail banking system. 1832 Holdings, Inc. was formed to hold certain debt and equity investment securities. Monarch provides commercial domicile services which include providing employees, directors, subleases of office facilities and registered agent services in Delaware and Nevada.

Certain reclassifications have been made to the prior year’s Consolidated Financial Statements to conform to the current year’s presentation. All significant intercompany accounts and transactions were eliminated in consolidation.

Business Combinations

On August 7, 2018, WSFS and Beneficial Bancorp, Inc. (Beneficial) entered into an Agreement and Plan of Reorganization (as amended from time to time, the Merger Agreement), pursuant to which, subject to the terms and conditions of the Merger Agreement, among other things, (i) Beneficial will merge with and into WSFS, with WSFS continuing as the surviving corporation (the “Merger”) and (ii) simultaneously, Beneficial Bank will merge with and into WSFS Bank, with WSFS Bank continuing as the surviving bank (the “Bank Merger” and, together with the Merger, the “Mergers”). Subject to the terms and conditions of the Merger Agreement, stockholders of Beneficial will receive 0.3013 shares of WSFS common stock and $2.93 in cash for each share of Beneficial common stock. Approvals from both WSFS and Beneficial shareholders were received in December 2018. The Mergers, which are subject to customary closing conditions, are expected to close on March 1, 2019.