Recent Transactions (Rental Property Held for Sale, Net) (Narrative) (Details)
$ in Thousands |
1 Months Ended |
3 Months Ended |
6 Months Ended |
12 Months Ended |
|
Jul. 31, 2016
USD ($)
|
Jun. 30, 2016
USD ($)
ft²
item
property
|
Jun. 30, 2016
USD ($)
ft²
item
property
|
Dec. 31, 2015
property
|
| Real Estate Properties [Line Items] |
|
|
|
|
| Unrealized losses on properties held for sale |
|
|
$ (3,615)
|
|
| Number of properties sold | property |
|
|
|
6
|
| Sales proceeds |
|
|
$ 359,515
|
|
| Multi-Family Properties [Member] |
|
|
|
|
| Real Estate Properties [Line Items] |
|
|
|
|
| Number of units | item |
|
5,434
|
5,434
|
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |
|
|
|
|
| Real Estate Properties [Line Items] |
|
|
|
|
| Estimated expected sales proceeds |
|
$ 84,000
|
|
|
| Expected disposition completion date |
|
|
third quarter of 2016
|
|
| Assets held for sale, Deferred charges and other assets |
|
2,000
|
$ 2,000
|
|
| Assets held for sale, Unbilled rents receivable, net |
|
1,500
|
1,500
|
|
| Assets held for sale, Accounts payable, accrued expenses and other liabilities |
|
900
|
900
|
|
| Assets held for sale, Rents received in advance and security deposits |
|
$ 1,200
|
1,200
|
|
| Expected assets to be written off |
|
|
3,500
|
|
| Expected liabilities to be written off |
|
|
$ 1,200
|
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Four Office Properties Disposed [Member] | Subsequent Event [Member] |
|
|
|
|
| Real Estate Properties [Line Items] |
|
|
|
|
| Sales proceeds |
$ 24,900
|
|
|
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Office [Member] |
|
|
|
|
| Real Estate Properties [Line Items] |
|
|
|
|
| Area of property (in square feet) | ft² |
|
567,000
|
567,000
|
|
| Number of properties held for sale | property |
|
5
|
5
|
|
| Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Multi-Family Properties [Member] |
|
|
|
|
| Real Estate Properties [Line Items] |
|
|
|
|
| Number of properties held for sale | property |
|
1
|
1
|
|
| Number of units | item |
|
220
|
220
|
|