Loans Receivable, Net - Additional Information (Detail) - USD ($)				3 Months Ended		12 Months Ended
	Nov. 30, 2016	May 02, 2016	Jul. 31, 2015	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans with non-accrual of interest				$ 21,679,000		$ 13,566,000
Financing receivables 90 days past due and still accruing				0
Impaired loans on non-accrual commercial real estate, multi-family, land, construction, commercial and industrial loans				250,000
Impaired loan portfolio total				35,343,000		31,042,000
Allocation in allowance for loan losses				976,000		510,000
Average balance of impaired loans				33,200,000	$ 34,600,000
Troubled debt restructured loans				30,500,000		30,500,000
Troubled debt restructured loans with accrual interest				27,000,000		27,000,000
Non-accrual loan total troubled debt restructurings				3,500,000		3,500,000
Specific reserves to loans accruing troubled debt restructurings				482,000		510,000
Ocean Shore Holdings Co.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 0
Cape Bancorp, Inc.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses		$ 0
Colonial American Bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			$ 0
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans with non-accrual of interest				11,993,000		$ 8,126,000
Recorded investment in mortgage and consumer loans collateralized, foreclosure amount				4,300,000
Foreclosed property held				$ 1,100,000