CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 65,867	$ 65,723
Less: Net loss attributable to noncontrolling interest	(29)	(38)
Net income attributable to WSFS	65,896	65,761
Net change in unrealized gains (losses) on investment securities available-for-sale
Net unrealized gains (losses) arising during the period, net of tax expense (benefit) of $22,117 and $(12,634), respectively	70,037	(40,007)
Net change in securities held-to-maturity
Amortization of net unrealized losses on available-for-sale securities reclassified to held-to-maturity, net of tax expense of $1,007 and $1,158, respectively	3,188	3,669
Net change in unfunded pension liability
Change in unfunded pension liability related to unrealized gain and prior service cost, net of tax benefit of $19 and $39, respectively	(61)	(124)
Net change in cash flow hedge
Net unrealized gain (loss) arising during the period, net of tax expense (benefit) of $908 and $(2,031), respectively	2,875	(6,433)
Net change in equity method investments
Net change in other comprehensive income of equity method investments, net of tax benefit of $201 and $7, respectively	(636)	(21)
Net current-period other comprehensive (loss) income	75,403	(42,916)
Total comprehensive income	$ 141,299	$ 22,845