Name:	pwod_FinancingReceivableIndividuallyEvaluatedForImpairmentMinimumAmount
Namespace Prefix:	pwod_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the amount in which loans are individually evaluated for possible impairment on a case by case basis.

No definition available.

Name:	pwod_FinancingReceivableIndividuallyEvaluatedForImpairmentOnCaseByCaseBasisMaximumAmount
Namespace Prefix:	pwod_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Financing Receivable, Modifications, Amount

No definition available.

Name:	pwod_FinancingReceivableModificationsAmount
Namespace Prefix:	pwod_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Financing Receivable, Modifications Remaining, Number of Contracts

No definition available.

Name:	pwod_FinancingReceivableModificationsRemainingNumberOfContracts
Namespace Prefix:	pwod_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of categories considered not criticized and rated as "Pass".

No definition available.

Name:	pwod_NumberOfCategoriesConsideredNotCriticizedAndRated
Namespace Prefix:	pwod_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the number of categories in which real estate loans are segmented.

No definition available.

Name:	pwod_NumberOfCategoriesInWhichRealEstateLoansSegmented
Namespace Prefix:	pwod_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The number of classes that groups of loans are collectively evaluated for impairment.

No definition available.

Name:	pwod_NumberOfClassesThatGroupsLoansAreCollectivelyEvaluatedForImpairment
Namespace Prefix:	pwod_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The total number of components that represents the allowance for loan losses.

No definition available.

Name:	pwod_NumberOfComponentsRepresentAllowanceForLoanLosses
Namespace Prefix:	pwod_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the time period for which loans that experience insignificant payment delays are generally not classified as impaired.

No definition available.

Name:	pwod_PaymentDelaysLimitUpToWhichLoansNotClassifiedAsImpairedMaximum
Namespace Prefix:	pwod_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Percentage of Loan Review Evaluated

No definition available.

Name:	pwod_PercentageOfLoanReviewEvaluated
Namespace Prefix:	pwod_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

Represents the minimum period after which loans are considered as substandard.

No definition available.

Name:	pwod_PeriodFinancingReceivablesPastDueAfterWhichLoansAreConsideredSubstandardMinimum
Namespace Prefix:	pwod_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the approximate number of months of sustained repayment performance to return a nonperforming troubled debt restructuring to performing status.

No definition available.

Name:	pwod_ReasonablePeriodToClassifyFromTroubledDebtRestructuringNonPerformingLoansToPerformingLoans
Namespace Prefix:	pwod_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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.

No definition available.

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

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

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

Amount of financing receivable modified as troubled debt restructuring.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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

Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

Name:	us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 35
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL49126937-111524

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

Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5162-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4437-111522

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

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_RealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=pwod_RealEstateMortgagePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
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Period Type: