EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator:
Net income attributable to WSFS	$ 62,404	$ 3,804
Net income attributable to WSFS	$ 62,404	$ 3,804
Denominator:
Weighted average basic shares (in shares)	61,510,714	64,942,593
Dilutive potential common shares (in shares)	168,000	184,000
Weighted average fully diluted shares (in shares)	61,678,871	65,127,000
Earnings per share:
Basic (in dollars per share)	$ 1.01	$ 0.06
Diluted (in dollars per share)	$ 1.01	$ 0.06
Outstanding common stock equivalents having no dilutive effect (in shares)	6,000	14,000