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 Income (Loss)	Retained Earnings	Treasury Stock	Non-controlling Interest
Beginning balance (in shares) at Dec. 31, 2020				57,575,783
Beginning balance at Dec. 31, 2020		$ 1,789,480	$ 1,791,726	$ 576	$ 1,053,022	$ 56,007	$ 977,414	$ (295,293)	$ (2,246)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		215,204	215,155				215,155		49
Other comprehensive (loss) income		(71,493)	(71,493)			(71,493)
Cash dividend		(18,058)	(18,058)				(18,058)
Issuance of common stock including proceeds from exercise of common stock options (in shares)				59,119
Issuance of common stock including proceeds from exercise of common stock options		526	526	$ 1	525
Stock-based compensation expense		4,250	4,250		4,250
Repurchases of common stock	[1]	(13,211)	(13,211)		(1,183)			(12,028)
Ending balance (in shares) at Sep. 30, 2021				57,634,902
Ending balance at Sep. 30, 2021		1,906,698	1,908,895	$ 577	1,056,614	(15,486)	1,174,511	(307,321)	(2,197)
Beginning balance (in shares) at Jun. 30, 2021				57,622,151
Beginning balance at Jun. 30, 2021		1,881,811	1,884,054	$ 577	1,054,276	10,238	1,126,284	(307,321)	(2,243)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		54,452	54,406				54,406		46
Other comprehensive (loss) income		(25,724)	(25,724)			(25,724)
Cash dividend		(6,179)	(6,179)				(6,179)
Issuance of common stock including proceeds from exercise of common stock options (in shares)				12,751
Issuance of common stock including proceeds from exercise of common stock options		349	349		349
Stock-based compensation expense		1,989	1,989		1,989
Repurchases of common stock	[1]	0
Ending balance (in shares) at Sep. 30, 2021				57,634,902
Ending balance at Sep. 30, 2021		1,906,698	1,908,895	$ 577	1,056,614	(15,486)	1,174,511	(307,321)	(2,197)
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) income		(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	[2]	(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) income		(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	[3]	(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)

[1] Repurchase of common stock includes 267,309 shares repurchased in connection with the Company's share repurchase program approved by the Board of Directors and 18,348 shares withheld to cover tax liabilities.

[2] 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.

[3] 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.