Investment Securities - Gross Unrealized Losses and Estimated Fair Value of Held to Maturity Debt Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Held-To-Maturity, Fair Value
Less than 12 months, fair value	$ 144,745	$ 3,353
12 months or longer, fair value	76,430	132,529
Total, fair value	221,175	135,882
Held-To-Maturity Unrealized Losses
Less than 12 months, gross unrealized losses	(4,291)	(1)
12 months or longer, gross unrealized losses	(11,195)	(7,080)
Total, gross unrealized losses	(15,486)	(7,081)
Government-agency obligations
Held-To-Maturity, Fair Value
Less than 12 months, fair value		0
12 months or longer, fair value		3,388
Total, fair value		3,388
Held-To-Maturity Unrealized Losses
Less than 12 months, gross unrealized losses		0
12 months or longer, gross unrealized losses		(22)
Total, gross unrealized losses		(22)
State and municipal obligations
Held-To-Maturity, Fair Value
Less than 12 months, fair value	144,745	3,353
12 months or longer, fair value	76,430	127,012
Total, fair value	221,175	130,365
Held-To-Maturity Unrealized Losses
Less than 12 months, gross unrealized losses	(4,291)	(1)
12 months or longer, gross unrealized losses	(11,195)	(7,044)
Total, gross unrealized losses	$ (15,486)	(7,045)
Corporate obligations
Held-To-Maturity, Fair Value
Less than 12 months, fair value		0
12 months or longer, fair value		2,129
Total, fair value		2,129
Held-To-Maturity Unrealized Losses
Less than 12 months, gross unrealized losses		0
12 months or longer, gross unrealized losses		(14)
Total, gross unrealized losses		$ (14)

Debt Securities, Held To Maturity, Unrealized Loss Position

No definition available.

Name:	pfs_DebtSecuritiesHeldToMaturityUnrealizedLossPositionAbstract
Namespace Prefix:	pfs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Securities, Held-To-Maturity Unrealized Loss Position, Accumulated Loss

+ References

No definition available.

+ Details

Name:	pfs_DebtSecuritiesHeldToMaturityUnrealizedLossPositionAccumulatedLossAbstract
Namespace Prefix:	pfs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for 12 months or longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-7

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-6

+ Details

Name:	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-6

+ Details

Name:	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-6

+ Details

Name:	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for less than 12 months.

+ References

+ Details

Name:	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for less than 12 months.

+ References

+ Details

Name:	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for 12 months or longer.

+ References

+ Details

Name:	us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=pfs_StateAndMunicipalObligationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: