Loans - Non-Covered Loans Modified as TDR (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($) Contract
Receivables [Abstract]
Number of Contracts \| Contract	4
Recorded Investment \| $	$ 505

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

No definition available.

Name:	vly_NumberOfTroubledDebtRestructuringContractsThatSubsequentlyDefaulted
Namespace Prefix:	vly_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration