CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income		$ 263,495	$ 269,025	$ 222,648
Less: Net (loss) income attributable to noncontrolling interest		(176)	(131)	273
Net income attributable to WSFS		263,671	269,156	222,375
Net change in unrealized gains (losses) on investment securities available-for-sale
Net unrealized (losses) gains arising during the period, net of tax (benefit) expense of $(11,955), $20,085, and $(167,261), respectively		(37,857)	63,601	(529,660)
Net change in securities held-to-maturity
Net change in unrealized losses (gains) on securities reclassified to held-to-maturity, net of tax expense (benefit) of $4,774, $5,361, and $(34,319), respectively	[1],[2]	15,118	16,980	(108,678)
Net change in unfunded pension liability
Change in unfunded pension liability related to unrealized loss (gain) and prior service cost, net of tax expense (benefit) of $269, $1, and $(5), respectively		799	(132)	209
Net change in cash flow hedge
Net unrealized (loss) gain arising during the period, net of tax (benefit) expense of $(2,809), $504, and $—, respectively		(8,894)	1,596	0
Amortization of unrealized gain on terminated cash flow hedges, net of tax benefit of $—, $34 and $51, respectively		0	(107)	(160)
Net change in cash flow hedge		(8,894)	1,489	(160)
Net change in equity method investments
Net change in other comprehensive (loss) income of equity method investments, net of tax (benefit) expense of $(16), $(27), and $67, respectively		(52)	(85)	213
Total other comprehensive (loss) income		(30,886)	81,853	(638,076)
Total comprehensive income (loss)		$ 232,785	$ 351,009	$ (415,701)

[1] Includes $119.8 million, net of tax benefit, of unrealized losses on transferred investment securities with a book value of $1.1 billion from available-for-sale to held-to-maturity that were transferred in June 2022.

[2] Includes amortization of unrealized gains and losses on securities reclassified to held-to-maturity.