Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands		Total	Cumulative change in accounting principle	Balance, January 1, 2020 (as adjusted for change in accounting principle)	Total Stockholders’ Equity of WSFS	Total Stockholders’ Equity of WSFS Cumulative change in accounting principle	Total Stockholders’ Equity of WSFS Balance, January 1, 2020 (as adjusted for change in accounting principle)	Common Stock	Common Stock Balance, January 1, 2020 (as adjusted for change in accounting principle)	Capital in Excess of Par Value	Capital in Excess of Par Value Balance, January 1, 2020 (as adjusted for change in accounting principle)	Accumulated Other Comprehensive (Loss) Income	Accumulated Other Comprehensive (Loss) Income Balance, January 1, 2020 (as adjusted for change in accounting principle)	Retained Earnings	Retained Earnings Cumulative change in accounting principle	Retained Earnings Balance, January 1, 2020 (as adjusted for change in accounting principle)	Treasury Stock	Treasury Stock Balance, January 1, 2020 (as adjusted for change in accounting principle)	Non-controlling Interest	Non-controlling Interest Balance, January 1, 2020 (as adjusted for change in accounting principle)
Beginning Balance (in shares) at Dec. 31, 2018								56,926,978
Beginning balance at Dec. 31, 2018		$ 820,920			$ 820,920			$ 569		$ 349,810		$ (15,394)		$ 791,031			$ (305,096)		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		147,918			148,809									148,809					(891)
Other comprehensive income (loss)		38,895			38,895							38,895
Cash dividend		(22,463)			(22,463)									(22,463)
Issuance of common stock including proceeds from exercise of common stock options (in shares)								508,680
Issuance of common stock including proceeds from exercise of common stock options		7,755			7,755			$ 6		7,749
Re-issuance of treasury stock in connection with BNCL merger and related items		950,044			949,968					687,897							262,071		76
Stock-based compensation expense		3,608			3,608					3,608
Repurchases of common stock		(97,186)			(97,186)												(97,186)
Ending Balance (in shares) at Dec. 31, 2019								57,435,658	57,435,658
Ending balance at Dec. 31, 2019		1,849,491	$ (30,368)	$ 1,819,123	1,850,306	$ (30,368)	$ 1,819,938	$ 575	$ 575	1,049,064	$ 1,049,064	23,501	$ 23,501	917,377	$ (30,368)	$ 887,009	(140,211)	$ (140,211)	(815)	$ (815)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		113,320			114,774									114,774					(1,454)
Other comprehensive income (loss)		32,506			32,506							32,506
Cash dividend		(24,369)			(24,369)									(24,369)
Issuance of common stock including proceeds from exercise of common stock options (in shares)								140,125
Issuance of common stock including proceeds from exercise of common stock options		2,032			2,032			$ 1		2,031
Contributions from noncontrolling shareholders		23																	23
Stock-based compensation expense		2,677			2,677					2,677
Repurchases of common stock	[1]	(155,832)			(155,832)					(750)							(155,082)
Ending Balance (in shares) at Dec. 31, 2020								57,575,783
Ending 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)		271,605			271,442									271,442					163
Other comprehensive income (loss)		(93,775)			(93,775)							(93,775)
Cash dividend		(24,242)			(24,242)									(24,242)
Issuance of common stock including proceeds from exercise of common stock options (in shares)								119,893
Issuance of common stock including proceeds from exercise of common stock options		1,522			1,522			$ 1		1,521
Stock-based compensation expense		5,694			5,694					5,694
Repurchases of common stock	[1]	(13,268)			(13,268)					(1,240)							(12,028)
Ending Balance (in shares) at Dec. 31, 2021								57,695,676
Ending balance at Dec. 31, 2021		$ 1,937,016			$ 1,939,099			$ 577		$ 1,058,997		$ (37,768)		$ 1,224,614			$ (307,321)		$ (2,083)

[1] Repurchase of common stock for the years ended December 31, 2021 and 2020 included 267,309 and 3,950,855 shares repurchased, respectively, in connection with the Company's share buyback program approved by the Board of Directors, and 31,188 and 24,910 shares withheld, respectively, to cover tax liabilities.