Credit Quality and Related Allowance for Loan Losses (Details 3) (USD $)	3 Months Ended
Mar. 31, 2013 contract	Mar. 31, 2012 contract	Dec. 31, 2012
Troubled debt restructurings
Number of Contracts	2	4
Pre-Modification Outstanding Recorded Investment	$ 264,000	$ 167,000
Post-Modification Outstanding Recorded Investment	264,000	167,000
Reasonable period for classification of troubled debt restructuring nonperforming loans to performing status	6 months
Troubled debt restructurings	13,692,000		16,217,000
Residential Real Estate Mortgages
Troubled debt restructurings
Number of Contracts		1
Pre-Modification Outstanding Recorded Investment		104,000
Post-Modification Outstanding Recorded Investment		104,000
Commercial Real Estate Mortgage
Troubled debt restructurings
Number of Contracts	2	1
Pre-Modification Outstanding Recorded Investment	264,000	37,000
Post-Modification Outstanding Recorded Investment	264,000	37,000
Recorded Investment	263,000
Number of Contracts	2
Construction Real Estate Mortgage
Troubled debt restructurings
Number of Contracts		2
Pre-Modification Outstanding Recorded Investment		26,000
Post-Modification Outstanding Recorded Investment		$ 26,000

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

No definition available.

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- Definition

Amount of investment in financing receivables (after modification) modified by troubled debt restructurings.

+ References

No definition available.

+ Details

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- Definition

Amount of investment in financing receivables (before modification) modified by troubled debt restructurings.

+ References

No definition available.

+ Details

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Namespace Prefix:	pwod_
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- Definition

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

+ References

No definition available.

+ Details

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6951948&loc=d3e18845-111554

+ Details

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 34

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953682-111524

+ Details

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- Definition

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

+ References

+ Details

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