Disposal Group Including Discontinued Operation Loss on Write Down

No definition available.

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- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 35

-Paragraph 32

-URI http://asc.fasb.org/extlink&oid=35687916&loc=d3e32787-111569

+ Details

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

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Period Type:	instant

- Details

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- Definition

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

+ References

No definition available.

+ Details

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Period Type:	instant

- Details

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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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Impairment of Certain Real Estate Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 12, 2013 property
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses recorded in Discontinued Operations:	$ 0	$ 7,644	$ 0
Number of real estate properties				3us-gaap_NumberOfRealEstateProperties
11107 and 11109 Sunset Hills Road [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses recorded in Discontinued Operations:	0	1,242	0
1111 Durham Avenue [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses recorded in Discontinued Operations:	0	6,402	0
Piedmont's Investment in Fund XIII and REIT JV (at Piedmont's approximate 72% ownership) [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses included in Continuing Operations as Equity in Loss of Unconsolidated Joint Ventures:	$ 0	$ 4,402	$ 0
Piedmont’s Approximate Ownership Percentage	72.00%
Number of real estate properties		2