PARENT COMPANY FINANCIAL INFORMATION - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating activities:
Net income attributable to WSFS	$ 263,671	$ 269,156	$ 222,375
Adjustments to reconcile net income to net cash provided by operating activities:
Unrealized gains on equity investments	0	(329)	(5,980)
Decrease in other assets	(106,041)	(2,185)	(58,852)
(Decrease) increase in other liabilities	85,291	(60,781)	315,065
Net cash provided by operating activities	219,899	237,003	480,854
Investing activities:
Net cash for business combinations	0	(3,000)	573,745
Net cash used in investing activities	(66,732)	(326,261)	(137,367)
Financing activities:
Issuance of common stock and exercise of common stock options	466	3,298	3,179
Purchase of treasury stock	(96,311)	(54,647)	(200,083)
Dividends paid	(35,805)	(36,742)	(35,746)
Net cash (used in) provided by financing activities	(91,249)	344,900	(1,039,168)
Increase (decrease) in cash, cash equivalents, and restricted cash	61,918	255,642	(695,681)
Cash, cash equivalents, and restricted cash at beginning of period	1,092,900	837,258	1,532,939
Cash, cash equivalents, and restricted cash at end of period	1,154,818	1,092,900	837,258
WSFS Financial Corporation
Operating activities:
Net income attributable to WSFS	263,671	269,156	222,375
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed (income) loss of subsidiaries	(64,429)	(182,396)	12,672
Realized gain on sale of equity investments	(2,105)	(9,493)	0
Unrealized gains on equity investments	0	(2,489)	(5,379)
Decrease in other assets	15,932	31,254	2,569
(Decrease) increase in other liabilities	(747)	3,488	812
Net cash provided by operating activities	212,322	109,520	233,049
Investing activities:
Payments for investment in and advances to subsidiaries	(2,511)	0	0
Net cash for business combinations	0	0	101,734
Net cash used in investing activities	(2,511)	0	101,734
Financing activities:
Issuance of common stock and exercise of common stock options	466	3,298	3,179
Redemption of senior and subordinated debt	0	(30,000)	0
Purchase of treasury stock	(96,311)	(54,647)	(200,083)
Dividends paid	(35,805)	(36,742)	(35,746)
Net cash (used in) provided by financing activities	(131,650)	(118,091)	(232,650)
Increase (decrease) in cash, cash equivalents, and restricted cash	78,161	(8,571)	102,133
Cash, cash equivalents, and restricted cash at beginning of period	197,270	205,841	103,708
Cash, cash equivalents, and restricted cash at end of period	$ 275,431	$ 197,270	$ 205,841