EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net income attributable to WSFS	$ 65,761	$ 62,404
Net income attributable to WSFS	$ 65,761	$ 62,404
Denominator:
Weighted average basic shares (in shares)	60,352,200	61,510,714
Dilutive potential common shares (in shares)	170,000	168,000
Weighted average fully diluted shares (in shares)	60,521,951	61,678,871
Earnings per share:
Basic (in dollars per share)	$ 1.09	$ 1.01
Diluted (in dollars per share)	$ 1.09	$ 1.01
Outstanding common stock equivalents having no dilutive effect (in shares)	0	6,000