Fair Value Measurements - Additional Information (Detail) (Maximum [Member])	12 Months Ended
Dec. 31, 2014
Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated costs	6.00%

Loans measured for impairment based on fair value of underlying collateral estimated costs.

No definition available.

Name:	pfs_LoansMeasuredForImpairmentBasedOnFairValueOfUnderlyingCollateralEstimatedCosts
Namespace Prefix:	pfs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration