Basis of Presentation - Additional Information (Detail)	Jun. 30, 2013 Office
Subsidiary or Equity Method Investee [Line Items]
Number of offices	51
Delaware [Member]
Subsidiary or Equity Method Investee [Line Items]
Number of offices	42
Pennsylvania [Member]
Subsidiary or Equity Method Investee [Line Items]
Number of offices	7
Virginia [Member]
Subsidiary or Equity Method Investee [Line Items]
Number of offices	1
Nevada [Member]
Subsidiary or Equity Method Investee [Line Items]
Number of offices	1
WSFS Bank [Member]
Subsidiary or Equity Method Investee [Line Items]
Number of wholly-owned subsidiaries	2
Montchanin [Member]
Subsidiary or Equity Method Investee [Line Items]
Number of wholly-owned subsidiaries	1