Name:	pdm_NumberofRealEstatePropertiesToBeRedeveloped
Namespace Prefix:	pdm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Number Of Wholly Owned Management Subsidiaries

No definition available.

Name:	pdm_NumberOfWhollyOwnedManagementSubsidiaries
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Data Type:	xbrli:integerItemType
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Period Type:	duration

Operating Leases, Income Statement, Percentage of Annualized Lease Revenue

No definition available.

Name:	pdm_OperatingLeasesIncomeStatementPercentageofAnnualizedLeaseRevenue
Namespace Prefix:	pdm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of Leased Real Estate Properties

No definition available.

Name:	pdm_PercentageOfLeasedRealEstateProperties
Namespace Prefix:	pdm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Area of a real estate property.

No definition available.

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
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Data Type:	num:percentItemType
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Period Type:	duration

The number of units or percentage investment held by one or more members or limited partners of the LLC or LP.

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

No definition available.

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

The number of real estate properties owned as of the balance sheet date.

No definition available.