EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Numerator:
Net income attributable to WSFS, basic	$ 72,326	$ 69,273	$ 138,222	$ 135,034
Net income attributable to WSFS, diluted	$ 72,326	$ 69,273	$ 138,222	$ 135,034
Denominator:
Weighted average basic shares (in shares)	56,702,264	59,833,207	57,572,272	60,092,704
Dilutive potential common shares (in shares)	150,000	126,000	194,000	144,000
Weighted average fully diluted shares (in shares)	56,851,797	59,958,628	57,765,602	60,237,232
Earnings per share:
Basic (in dollars per share)	$ 1.28	$ 1.16	$ 2.40	$ 2.25
Diluted (in dollars per share)	$ 1.27	$ 1.16	$ 2.39	$ 2.24
Outstanding common stock equivalents having no dilutive effect (in shares)	0	3,000	1,000	2,000