Recent Transactions (Real Estate Held For Sale/Discontinued Operations/Dispositions) (Narrative) (Details)
$ in Thousands |
3 Months Ended |
15 Months Ended |
|
|
|
Mar. 31, 2020
USD ($)
property
item
|
Mar. 31, 2020
USD ($)
property
|
Mar. 31, 2020
ft²
|
Mar. 31, 2020
item
|
Dec. 19, 2019
ft²
|
| Real Estate Properties [Line Items] |
|
|
|
|
|
| Unrealized losses on rental properties held for sale |
$ (7,915)
|
|
|
|
|
| Land and other Impairments |
$ 5,263
|
|
|
|
|
| Suburban Office Portfolio [Member] |
|
|
|
|
|
| Real Estate Properties [Line Items] |
|
|
|
|
|
| Area of property (in square feet) | ft² |
|
|
|
|
6,600,000
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Suburban Office Portfolio [Member] |
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|
|
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| Real Estate Properties [Line Items] |
|
|
|
|
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| Number of real estate properties |
34
|
34
|
|
12
|
|
| Area of property (in square feet) | ft² |
|
|
5,900,000
|
|
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Office [Member] |
|
|
|
|
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| Real Estate Properties [Line Items] |
|
|
|
|
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| Number of properties held for sale | property |
34
|
34
|
|
|
|
| Number of disposal groups | property |
12
|
|
|
|
|
| Disposal Group, Not Discontinued Operations [Member] |
|
|
|
|
|
| Real Estate Properties [Line Items] |
|
|
|
|
|
| Unrealized losses on rental properties held for sale |
$ (45,068)
|
|
|
|
|
| Area Of Real Estate Property Sold | ft² |
|
|
200,000
|
|
|
| Gain (loss) on sale of property |
$ 17,322
|
|
|
|
|
| Disposal Group, Not Discontinued Operations [Member] | Properties Disposed One [Member] | Suburban Office Portfolio [Member] |
|
|
|
|
|
| Real Estate Properties [Line Items] |
|
|
|
|
|
| Area of property (in square feet) | ft² |
|
|
697,000
|
|
|
| Number of properties sold | property |
|
3
|
|
|
|
| Gain (loss) on sale of property |
|
$ 87,200
|
|
|
|
| Disposal Group, Not Discontinued Operations [Member] | Properties Disposed Two [Member] |
|
|
|
|
|
| Real Estate Properties [Line Items] |
|
|
|
|
|
| Number of real estate properties | property |
17
|
17
|
|
|
|
| Area of property (in square feet) | ft² |
|
|
2,500,000
|
|
|
| Disposal Group, Not Discontinued Operations [Member] | Properties Disposed Two [Member] | Suburban Office Portfolio [Member] |
|
|
|
|
|
| Real Estate Properties [Line Items] |
|
|
|
|
|
| Number of real estate properties | property |
17
|
17
|
|
|
|
| Area of property (in square feet) | ft² |
|
|
2,500,000
|
|
|
| Gain (loss) on sale of property |
$ 335,500
|
|
|
|
|
| Parsippany, Madison, Short Hills, Edison, Red Bank, and Florhan Park [Member] |
|
|
|
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| Real Estate Properties [Line Items] |
|
|
|
|
|
| Unrealized losses on rental properties held for sale |
53,000
|
|
|
|
|
| Land and other Impairments |
$ 5,300
|
|
|
|
|
| Parsippany, Madison, Short Hills, Edison, Red Bank, and Florhan Park [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |
|
|
|
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| Real Estate Properties [Line Items] |
|
|
|
|
|
| Number of properties held for sale | property |
20
|
20
|
|
|
|
| Number of disposal groups | item |
4
|
|
|
|
|
| Parsippany, Madison, Short Hills, Edison, Red Bank, and Florhan Park [Member] | Discontinued Operations [Member] |
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|
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| Real Estate Properties [Line Items] |
|
|
|
|
|
| Unrealized losses on rental properties held for sale |
$ 45,100
|
|
|
|
|
| Land and other Impairments |
$ 5,300
|
|
|
|
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