Disposal Group, Contingent Consideration, Asset, Holdback Term

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- Definition

Disposal Group, Including Discontinued Operation, Value Of Assets Disposed Of

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- Definition

Disposal Group, Not Discontinued Operation, Contingent Consideration, Asset

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- Definition

The number of real estate properties sold during the period.

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- Definition

Sale of ownership interest percentage.

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No definition available.

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- Definition

Area of land held.

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No definition available.

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- Definition

Amount of gain (loss) from deconsolidation of subsidiary and derecognition of group of assets constituting transfer of business or nonprofit activity, excluding conveyance of oil and gas mineral rights and transfer of good or service in contract with customer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684

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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.

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- Definition

Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2443-110228

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

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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.

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- Definition

Net rentable area for properties owned.

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REAL ESTATE INVESTMENTS - Summary of Office Properties Sold (Details) $ in Thousands									12 Months Ended
	Sep. 08, 2021 USD ($) ft²	Jul. 06, 2021 USD ($) ft²	Dec. 21, 2020 USD ($) ft² property	Jul. 21, 2020 USD ($) ft² property	Jun. 15, 2020 USD ($) a	Mar. 19, 2020 USD ($) ft²	Sep. 11, 2019 USD ($) ft²	Mar. 15, 2019 USD ($) a	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on Sale									$ 142	$ 289,461	$ 356
Sale of ownership interest percentage			60.00%
Mid-Atlantic Office Portfolio
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Variable consideration			$ 4,100
Mid-Atlantic Office Portfolio \| Minimum
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Variable consideration holdback term			6 months
Mid-Atlantic Office Portfolio \| Maximum
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Variable consideration holdback term			9 months
Commerce Square
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales Price				$ 115,000
Sale of ownership interest percentage				30.00%
Value of assets disposed of				$ 600,000
Deconsolidation gain				$ 271,900
Land
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on Sale											$ 1,000
Land \| 1100 Lenox Drive
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Land area \| ft²	5
Sales Price	$ 2,575
Gain (Loss) on Sale	$ 68
Land \| 2100-2200 Lenox Drive
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Land area \| ft²		35.2
Sales Price		$ 8,900
Gain (Loss) on Sale		$ 842
Land \| Keith Valley
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Land area \| a					14.0
Sales Price					$ 4,000
Gain (Loss) on Sale					$ 201
Land \| 9 Presidential Boulevard
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Land area \| a								2.7
Sales Price								$ 5,325
Gain (Loss) on Sale								$ 751
Office \| Mid-Atlantic Office Portfolio
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Rentable Square Feet \| ft²			1,128,645
Sales Price			$ 192,943
Gain (Loss) on Sale			$ 15,164
Number of properties sold \| property			12
Office \| Mid-Atlantic Office Portfolio \| Pennsylvania
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties sold \| property			9
Office \| Mid-Atlantic Office Portfolio \| Maryland
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties sold \| property			3
Office \| Commerce Square
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Rentable Square Feet \| ft²			1,896,142	1,896,142
Sales Price				$ 115,000
Gain (Loss) on Sale				$ 271,905
Number of properties sold \| property				2
Office \| 52 East Swedesford Road
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Rentable Square Feet \| ft²						131,077
Sales Price						$ 18,000
Gain (Loss) on Sale						$ 2,336
Office \| 1900 Gallows Rd
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Rentable Square Feet \| ft²							210,632
Sales Price							$ 36,400
Gain (Loss) on Sale							$ (367)