Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable, classified as current.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

Amortized cost excluding accrued interest, of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterest90DaysOrMorePastDueStillAccruing
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

+ Details

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

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 3B
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447

+ Details

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

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=6378536&loc=d3e10095-111533

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

+ Details

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

- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

+ Details

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

- Definition

Amount of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=84159169&loc=d3e10152-111534

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533

+ Details

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

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=pwod_FinancialAsset30To89DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=pwod_FinancialAsset90DaysPastDueOrMoreStillAccruingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

Loans - Aging Categories of Loans by Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	$ 1,560,700		$ 1,392,147
Nonaccrual	4,582		5,389
Total	1,560,331		1,391,846
Net deferred loan fees and discounts	369		301
Allowance for loan losses	(15,211)	$ (14,393)	(14,176)	$ (14,557)	$ (14,438)	$ (13,803)
Loans, net	1,536,009		1,366,184
Loans, net	1,545,489		1,377,971
Current
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	1,550,851		1,380,059
Past Due 30 to 89 Days
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	3,737		5,537
Financial Asset, 90 Days Past Due or More & Still Accruing
Aging categories of loans by segment
Past due 90 days or more & still accruing	1,161		861
Commercial, financial, and agricultural
Aging categories of loans by segment
Nonaccrual	453		575
Total	173,365		163,285
Allowance for loan losses	(2,069)	(2,108)	(1,946)	(2,121)	(1,846)	(1,936)
Commercial, financial, and agricultural \| Current
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	172,765		162,571
Commercial, financial, and agricultural \| Past Due 30 to 89 Days
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	147		139
Commercial, financial, and agricultural \| Financial Asset, 90 Days Past Due or More & Still Accruing
Aging categories of loans by segment
Past due 90 days or more & still accruing	0		0
Real Estate Mortgages \| Residential
Aging categories of loans by segment
Nonaccrual	584		837
Total	683,242		595,847
Allowance for loan losses	(5,195)	(4,818)	(4,701)	(4,765)	(4,619)	(4,460)
Real Estate Mortgages \| Residential \| Current
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	679,611		590,240
Real Estate Mortgages \| Residential \| Past Due 30 to 89 Days
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	1,948		4,083
Real Estate Mortgages \| Residential \| Financial Asset, 90 Days Past Due or More & Still Accruing
Aging categories of loans by segment
Past due 90 days or more & still accruing	1,099		687
Real Estate Mortgages \| Commercial
Aging categories of loans by segment
Nonaccrual	3,545		3,937
Total	485,538		446,734
Allowance for loan losses	(5,536)	(5,395)	(5,336)	(4,020)	(4,436)	(3,635)
Real Estate Mortgages \| Commercial \| Current
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	481,399		442,573
Real Estate Mortgages \| Commercial \| Past Due 30 to 89 Days
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	594		224
Real Estate Mortgages \| Commercial \| Financial Asset, 90 Days Past Due or More & Still Accruing
Aging categories of loans by segment
Past due 90 days or more & still accruing	0		0
Real Estate Mortgages \| Construction
Aging categories of loans by segment
Nonaccrual	0		40
Total	48,694		37,295
Allowance for loan losses	(210)	(199)	(179)	(228)	(212)	(134)
Real Estate Mortgages \| Construction \| Current
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	48,694		36,701
Real Estate Mortgages \| Construction \| Past Due 30 to 89 Days
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	0		554
Real Estate Mortgages \| Construction \| Financial Asset, 90 Days Past Due or More & Still Accruing
Aging categories of loans by segment
Past due 90 days or more & still accruing	0		0
Consumer automobile loans
Aging categories of loans by segment
Nonaccrual	0		0
Total	159,681		139,408
Allowance for loan losses	(1,585)	(1,307)	(1,411)	(1,693)	(1,824)	(1,906)
Consumer automobile loans \| Current
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	158,676		138,775
Consumer automobile loans \| Past Due 30 to 89 Days
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	950		490
Consumer automobile loans \| Financial Asset, 90 Days Past Due or More & Still Accruing
Aging categories of loans by segment
Past due 90 days or more & still accruing	55		143
Other consumer installment loans
Aging categories of loans by segment
Nonaccrual	0		0
Total	9,811		9,277
Allowance for loan losses	(118)	$ (110)	(111)	$ (129)	$ (44)	$ (261)
Other consumer installment loans \| Current
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	9,706		9,199
Other consumer installment loans \| Past Due 30 to 89 Days
Aging categories of loans by segment
Financing receivable, before allowance for credit loss	98		47
Other consumer installment loans \| Financial Asset, 90 Days Past Due or More & Still Accruing
Aging categories of loans by segment
Past due 90 days or more & still accruing	$ 7		$ 31