Business Combination - Schedule of Supplemental Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	8 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Sun Bancorp, Inc.
Business Acquisition [Line Items]
Net interest income, Actual			$ 63,889
Provision for loan losses, Actual			1,215
Non-interest income, Actual			7,961
Non-interest expense, Actual			35,184
Provision (benefit) for income taxes, Actual			7,090
Net income, Actual			$ 28,361
Cape Bancorp, Inc.
Business Acquisition [Line Items]
Net interest income, Actual		$ 34,565
Provision for loan losses, Actual		498
Non-interest income, Actual		3,503
Non-interest expense, Actual		19,258
Provision (benefit) for income taxes, Actual		6,947
Net income, Actual		$ 12,311
Ocean Shore Holdings Co.
Business Acquisition [Line Items]
Net interest income, Actual	$ 3,109
Provision for loan losses, Actual	0
Non-interest income, Actual	349
Non-interest expense, Actual	1,337
Provision (benefit) for income taxes, Actual	(60)
Net income, Actual	$ 1,397
Net interest income, Pro forma				$ 246,642	$ 242,508	$ 236,852
Provision for loan losses, Pro forma				3,490	2,914	2,718
Non-interest income, Pro forma				35,642	38,960	39,150
Non-interest expense, Pro forma				203,733	191,342	226,782
Provision (benefit) for income taxes, Pro forma				12,911	23,675	(40,177)
Net income, Pro forma				$ 62,150	$ 63,537	$ 86,679
Fully diluted, Pro forma				$ 1.27	$ 1.32	$ 1.84