Disclosure Of Fair Value Of Assets And Liabilities (Narrative) (Details)
|
1 Months Ended |
9 Months Ended |
12 Months Ended |
|
Mar. 31, 2020
property
|
Sep. 30, 2020
USD ($)
|
Dec. 31, 2020
USD ($)
property
item
|
Dec. 31, 2019
USD ($)
property
item
|
Dec. 31, 2018
USD ($)
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Fair value of Company's long-term debt |
|
|
$ 2,879,002,000
|
$ 2,791,629,000
|
|
| Principal balance outstanding |
|
|
2,801,797,000
|
2,808,518,000
|
|
| Land and other impairments |
|
|
16,817,000
|
$ 32,444,000
|
$ 24,566,000
|
| Property impairments |
|
$ 36,600,000
|
36,582,000
|
|
|
| Parsippany, Madison, Short Hills, Edison, And Red Bank, New Jersey [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Unrealized losses on rental properties held for sale |
|
|
$ (15,700,000)
|
|
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Properties | property |
|
|
6
|
|
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Parsippany, Madison, Short Hills, Edison, And Red Bank, New Jersey [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Number of properties held for sale | property |
|
|
6
|
|
|
| Number of disposal groups | item |
|
|
3
|
6
|
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Office [Member] | Fort Lee, Newark, Paramus, Bridgewater, Morris Plains And Rahway, New Jersey [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Number of properties held for sale | property |
|
|
|
35
|
|
| Number of properties not expected to recover from estimated net sales proceeds | property |
|
|
|
20
|
|
| Unrealized losses on rental properties held for sale |
|
|
|
$ 164,400,000
|
|
| Properties aggregate net book value |
|
|
|
966,000,000
|
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Office [Member] | Parsippany, Madison, Short Hills, Edison, And Red Bank, New Jersey [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Number of properties held for sale | property |
|
|
16
|
|
|
| Number of properties not expected to recover from estimated net sales proceeds | property |
|
|
6
|
|
|
| Unrealized losses on rental properties held for sale |
|
|
$ (15,700,000)
|
|
|
| Properties aggregate net book value |
|
|
657,000,000
|
|
|
| Land and other impairments |
|
|
$ 9,500,000
|
|
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Hotel [Member] | Weehawken, New Jersey [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Property impairments |
|
$ 36,600,000
|
|
|
|
| Properties | property |
|
|
2
|
|
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Land Parcels [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Land and other impairments |
|
|
$ 7,300,000
|
|
|
| Properties | property |
|
|
3
|
|
|
| Disposal Group, Not Discontinued Operations [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Unrealized losses on rental properties held for sale |
|
|
$ (1,682,000)
|
(39,049,000)
|
|
| Disposal Group, Not Discontinued Operations [Member] | Hotel [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Number of properties closed | property |
1
|
|
|
|
|
| Disposal Group, Not Discontinued Operations [Member] | Hotel [Member] | Weehawken, New Jersey [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Properties | property |
|
|
2
|
|
|
| Number of properties closed | property |
1
|
|
|
|
|
| Discontinued Operations [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Unrealized losses on rental properties held for sale |
|
|
$ (14,040,000)
|
$ (135,052,000)
|
|
| Discontinued Operations [Member] | Parsippany, Madison, Short Hills, Edison, And Red Bank, New Jersey [Member] |
|
|
|
|
|
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
|
|
|
|
|
| Unrealized losses on rental properties held for sale |
|
|
(14,000,000)
|
|
|
| Land and other impairments |
|
|
$ 9,500,000
|
|
|