CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands		Total	Total Stockholders' Equity of WSFS	Common Stock	Capital in Excess of Par Value	Accumulated Other Comprehensive Loss	Retained Earnings	Treasury Stock	Non-controlling Interest
Beginning balance (in shares) at Dec. 31, 2021				57,695,676
Beginning balance at Dec. 31, 2021		$ 1,937,016	$ 1,939,099	$ 577	$ 1,058,997	$ (37,768)	$ 1,224,614	$ (307,321)	$ (2,083)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		138,213	137,926				137,926		287
Other comprehensive loss		(677,711)	(677,711)			(677,711)
Cash dividend		(26,501)	(26,501)				(26,501)
Contributions from noncontrolling shareholders		(53)							(53)
Issuance of common stock including proceeds from exercise of common stock options (in shares)				83,830
Issuance of common stock including proceeds from exercise of common stock options		2,519	2,519	$ 1	2,518
Issuance of common stock in acquisition of BMT (in shares)				18,116,848
Issuance of common stock in acquisition of BMT		908,016	908,016	$ 181	907,835
Noncontrolling interest assumed in acquisition		(913)							(913)
Stock-based compensation expense		4,427	4,427		4,427
Repurchases of common stock	[1]	(184,182)	(184,182)		(2,149)			(182,033)
Ending balance (in shares) at Sep. 30, 2022				75,896,354
Ending balance at Sep. 30, 2022		2,100,831	2,103,593	$ 759	1,971,628	(715,479)	1,336,039	(489,354)	(2,762)
Beginning balance (in shares) at Jun. 30, 2022				75,870,300
Beginning balance at Jun. 30, 2022		2,312,876	2,315,360	$ 759	1,968,175	(518,878)	1,272,192	(406,888)	(2,484)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		73,344	73,382				73,382		(38)
Other comprehensive loss		(196,601)	(196,601)			(196,601)
Cash dividend		(9,535)	(9,535)				(9,535)
Contributions from noncontrolling shareholders		(240)							(240)
Issuance of common stock including proceeds from exercise of common stock options (in shares)				26,054
Issuance of common stock including proceeds from exercise of common stock options		2,087	2,087		2,087
Stock-based compensation expense		1,366	1,366		1,366
Repurchases of common stock	[2]	(82,466)	(82,466)					(82,466)
Ending balance (in shares) at Sep. 30, 2022				75,896,354
Ending balance at Sep. 30, 2022		2,100,831	2,103,593	$ 759	1,971,628	(715,479)	1,336,039	(489,354)	(2,762)
Beginning balance (in shares) at Dec. 31, 2022				75,921,997
Beginning balance at Dec. 31, 2022		2,201,886	2,205,113	$ 759	1,974,210	(675,844)	1,411,243	(505,255)	(3,227)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		205,520	205,248				205,248		272
Other comprehensive loss		(104,867)	(104,867)			(104,867)
Cash dividend		(27,633)	(27,633)				(27,633)
Distributions to noncontrolling shareholders		(4,462)							(4,462)
Issuance of common stock including proceeds from exercise of common stock options (in shares)				121,905
Issuance of common stock including proceeds from exercise of common stock options		2,420	2,420	$ 2	2,418
Stock-based compensation expense		7,211	7,211		7,211
Repurchases of common stock	[3]	(44,697)	(44,697)		(2,365)			(42,332)
Ending balance (in shares) at Sep. 30, 2023				76,043,902
Ending balance at Sep. 30, 2023		2,235,378	2,242,795	$ 761	1,981,474	(780,711)	1,588,858	(547,587)	(7,417)
Beginning balance (in shares) at Jun. 30, 2023				76,021,963
Beginning balance at Jun. 30, 2023		2,307,384	2,314,659	$ 760	1,977,945	(656,059)	1,523,849	(531,836)	(7,275)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		74,263	74,166				74,166		97
Other comprehensive loss		(124,652)	(124,652)			(124,652)
Cash dividend		(9,157)	(9,157)				(9,157)
Distributions to noncontrolling shareholders		(239)							(239)
Issuance of common stock including proceeds from exercise of common stock options (in shares)				21,939
Issuance of common stock including proceeds from exercise of common stock options		2,058	2,058	$ 1	2,057
Stock-based compensation expense		1,472	1,472		1,472
Repurchases of common stock	[4]	(15,751)	(15,751)					(15,751)
Ending balance (in shares) at Sep. 30, 2023				76,043,902
Ending balance at Sep. 30, 2023		$ 2,235,378	$ 2,242,795	$ 761	$ 1,981,474	$ (780,711)	$ 1,588,858	$ (547,587)	$ (7,417)

[1] Repurchase of common stock includes 3,789,137 shares repurchased in connection with the Company's share repurchase program approved by the Board of Directors and 104,965 shares withheld to cover tax liabilities.

[2] Repurchase of common stock includes 1,664,550 shares repurchased in connection with the Company's share repurchase program approved by the Board of Directors, and 4,872 shares withheld to cover tax liabilities.

[3] Repurchase of common stock includes 1,006,178 shares repurchased in connection with the Company's share repurchase program approved by the Board of Directors, and 45,489 shares withheld to cover tax liabilities.

[4] Repurchase of common stock includes 386,900 shares repurchased in connection with the Company's share repurchase program approved by the Board of Directors.