EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator:
Net income attributable to WSFS	$ 69,273	$ 68,678	$ 135,034	$ 131,082
Net income attributable to WSFS	$ 69,273	$ 68,678	$ 135,034	$ 131,082
Denominator:
Weighted average basic shares (in shares)	59,833,207	61,348,200	60,092,704	61,429,008
Dilutive potential common shares (in shares)	126,000	66,000	144,000	97,000
Weighted average fully diluted shares (in shares)	59,958,628	61,414,273	60,237,232	61,526,331
Earnings per share:
Basic (in dollars per share)	$ 1.16	$ 1.12	$ 2.25	$ 2.13
Diluted (in dollars per share)	$ 1.16	$ 1.12	$ 2.24	$ 2.13
Outstanding common stock equivalents having no dilutive effect (in shares)	3,000	98,000	2,000	22,000