EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Numerator:
Net income attributable to WSFS, basic	$ 65,896	$ 65,761
Net income attributable to WSFS, diluted	$ 65,896	$ 65,761
Denominator:
Weighted average basic shares (in shares)	58,451,947	60,352,200
Dilutive potential common shares (in shares)	261,000	170,000
Weighted average fully diluted shares (in shares)	58,713,452	60,521,951
Earnings per share:
Basic (in dollars per share)	$ 1.13	$ 1.09
Diluted (in dollars per share)	$ 1.12	$ 1.09
Outstanding common stock equivalents having no dilutive effect (in shares)	1,000	0