BASIS OF PRESENTATION (Details)	Sep. 30, 2023 subsidiary office
Basis Of Presentation [Line Items]
Number of unconsolidated subsidiary | subsidiary	3
Number of majority-owned subsidiary | subsidiary	1
Number of banking offices	116
Pennsylvania
Basis Of Presentation [Line Items]
Number of banking offices	59
Delaware
Basis Of Presentation [Line Items]
Number of banking offices	40
New Jersey
Basis Of Presentation [Line Items]
Number of banking offices	14
Virginia
Basis Of Presentation [Line Items]
Number of banking offices	1
Nevada
Basis Of Presentation [Line Items]
Number of banking offices	1
FLORIDA
Basis Of Presentation [Line Items]
Number of banking offices	1
WSFS Financial Corporation
Basis Of Presentation [Line Items]
Number of wholly-owned subsidiaries | subsidiary	2