Basis of Presentation (Details)	Dec. 31, 2020 subsidiary Office
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of unconsolidated subsidiary | subsidiary	1
Number of majority-owned subsidiary | subsidiary	1
Number of office locations	112
Pennsylvania
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of office locations	52
Delaware
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of office locations	42
New Jersey
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of office locations	16
Virginia
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of office locations	1
Nevada
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of office locations	1
WSFS Financial Corporation
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Number of wholly-owned subsidiaries | subsidiary	3