The location of the real estate property.

No definition available.

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- Definition

Date the entity disposed of a business or a group of assets, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

No definition available.

+ Details

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- Definition

Amount of difference between the carrying amount and the sales price of real estate properties sold as part of discontinued operations.

+ References

No definition available.

+ Details

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- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2921-110230

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Discontinued Operations - Schedule of Property Dispositions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Book Value of Real Estate	$ 3,023,249	$ 3,024,271
Gain on Sale	0	10,463	$ 32,493
Non-cash impairment loss on real estate	$ 5,400	11,700	0
2013 Dispositions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Sales Price			100,834
Net Book Value of Real Estate			68,341
Gain on Sale			32,493
Non-cash impairment loss on real estate			$ 8,100
Atrium at Stoneridge
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Location			Columbia, SC
Date of Sale			Mar. 20, 2013
Net Sales Price			$ 2,966
Net Book Value of Real Estate			2,424
Gain on Sale			542
Non-cash impairment loss on real estate			$ 3,500
Waterstone
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Location			Atlanta, GA
Date of Sale			Jul. 10, 2013
Net Sales Price			$ 3,247
Net Book Value of Real Estate			3,207
Gain on Sale			40
Non-cash impairment loss on real estate			$ 3,000
Meridian
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Location			Atlanta, GA
Date of Sale			Jul. 10, 2013
Net Sales Price			$ 6,615
Net Book Value of Real Estate			6,560
Gain on Sale			55
Non-cash impairment loss on real estate			$ 1,600
Bank of America Plaza
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Location			Nashville, TN
Date of Sale			Jul. 17, 2013
Net Sales Price			$ 41,093
Net Book Value of Real Estate			29,643
Gain on Sale			11,450
Non-cash impairment loss on real estate			$ 0
Lakewood II
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Location			Atlanta, GA
Date of Sale			Oct. 31, 2013
Net Sales Price			$ 10,240
Net Book Value of Real Estate			4,403
Gain on Sale			5,837
Non-cash impairment loss on real estate			$ 0
Carmel Crossing
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Location			Charlotte, NC
Date of Sale			Nov. 08, 2013
Net Sales Price			$ 36,673
Net Book Value of Real Estate			22,104
Gain on Sale			14,569
Non-cash impairment loss on real estate			$ 0
2014 Dispositions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Sales Price		26,681
Net Book Value of Real Estate		16,218
Gain on Sale		10,463
Non-cash impairment loss on real estate		$ 5,600
Woodbranch Building
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Location		Houston, TX
Date of Sale		Jan. 14, 2014
Net Sales Price		$ 14,424
Net Book Value of Real Estate		4,450
Gain on Sale		9,974
Non-cash impairment loss on real estate		$ 0
Mesa Corporate Center
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Location		Phoenix, AZ
Date of Sale		Jan. 31, 2014
Net Sales Price		$ 12,257
Net Book Value of Real Estate		11,768
Gain on Sale		489
Non-cash impairment loss on real estate		$ 5,600