EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net income attributable to WSFS	$ 3,804	$ 65,082
Denominator:
Weighted average basic shares (in shares)	64,942,593	47,509,205
Dilutive potential common shares (in shares)	184,000	283,000
Weighted average fully diluted shares (in shares)	65,127,000	47,792,108
Earnings per share:
Basic (in dollars per share)	$ 0.06	$ 1.37
Diluted (in dollars per share)	$ 0.06	$ 1.36
Outstanding common stock equivalents having no dilutive effect (in shares)	14,000	3,000