PARENT COMPANY FINANCIAL INFORMATION - Condensed Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income:
Realized (loss) gain on sale of equity investment, net	$ 0	$ (706)	$ 22,052
Unrealized gains (losses) on equity investments, net	0	331	9,076
Other noninterest income	260,134	185,480	201,025
Total revenue	963,949	641,849	715,430
Expense:
Interest expense	40,925	22,720	48,450
Other operating expense	(703,815)	(456,369)	(514,405)
Net expenses	(662,890)	(433,649)	(465,955)
Income before taxes	300,609	357,700	144,956
Income tax benefit	77,961	86,095	31,636
WSFS Financial Corporation
Income:
Interest income	374	357	356
Realized (loss) gain on sale of equity investment, net	0	(706)	0
Unrealized gains (losses) on equity investments, net	5,379	5,389	(1,617)
Other noninterest income	251,382	4,759	208,762
Total revenue	257,135	9,799	207,501
Expense:
Interest expense	11,763	7,771	6,748
Other operating expense	11,489	7,508	2,553
Net expenses	23,252	15,279	9,301
Income (loss) before equity in undistributed income of subsidiaries	233,883	(5,480)	198,200
Equity in undistributed (loss) income of subsidiaries	(12,672)	276,208	(84,346)
Income before taxes	221,211	270,728	113,854
Income tax benefit	(1,164)	(714)	(920)
Net income attributable to WSFS	$ 222,375	$ 271,442	$ 114,774