EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net income attributable to WSFS	$ 60,740	$ 95,667	$ 64,544	$ 160,749
Denominator:
Weighted average basic shares (in shares)	64,224,018	47,529,143	64,581,321	47,519,229
Dilutive potential common shares (in shares)	59,000	163,000	115,000	156,000
Weighted average fully diluted shares (in shares)	64,283,288	47,691,709	64,696,053	47,675,223
Earnings per share:
Basic (in dollars per share)	$ 0.95	$ 2.01	$ 1.00	$ 3.38
Diluted (in dollars per share)	$ 0.94	$ 2.01	$ 1.00	$ 3.37
Outstanding common stock equivalents having no dilutive effect (in shares)	51,000	0	7,000	1,000