Loans Receivable and Allowance for Loan Losses - Schedule of Troubled Debt Restructurings (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($) SecurityLoan	Dec. 31, 2014 USD ($) SecurityLoan
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan	13	17
Pre-Modification Outstanding Recorded Investment	$ 11,574	$ 4,293
Post-Modification Outstanding Recorded Investment	$ 11,464	$ 3,742
Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan	6	14
Pre-Modification Outstanding Recorded Investment	$ 2,192	$ 3,034
Post-Modification Outstanding Recorded Investment	$ 2,179	$ 2,725
Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan		1
Pre-Modification Outstanding Recorded Investment		$ 865
Post-Modification Outstanding Recorded Investment		$ 861
Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan	1
Pre-Modification Outstanding Recorded Investment	$ 2,600
Post-Modification Outstanding Recorded Investment	$ 2,351
Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan	7	15
Pre-Modification Outstanding Recorded Investment	$ 4,792	$ 3,899
Post-Modification Outstanding Recorded Investment	$ 4,530	$ 3,586
Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan	4
Pre-Modification Outstanding Recorded Investment	$ 6,659
Post-Modification Outstanding Recorded Investment	$ 6,822
Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans \| SecurityLoan	2	2
Pre-Modification Outstanding Recorded Investment	$ 123	$ 394
Post-Modification Outstanding Recorded Investment	$ 112	$ 156

Number of financing receivables that have been modified by troubled debt restructurings.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=pfs_CommercialMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=pfs_MortgageLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: