XML 147 R124.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Subsequent Events (Textual) (Details) |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Feb. 02, 2017 USD ($) ft² property | Jan. 31, 2017 USD ($) property | Dec. 31, 2016 USD ($) ft² property | Dec. 31, 2015 USD ($) ft² property | Dec. 31, 2014 USD ($) ft² property | Jan. 30, 2017 USD ($) a | Jan. 10, 2017 shares
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Sale |  |  | $ 116,983,000 |  | $ 20,496,000 |  | $ 4,901,000 |  |  |
Net gain (loss) on real estate venture transactions |  |  | $ 20,000,000 |  | $ 7,229,000 |  | $ (417,000) |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Shares Authorized For Equity Offering Program | shares |  |  |  |  |  |  |  |  |  | 16,000,000
TB-BDN Plymouth Apartments [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Gross sales price |  | $ 100,500,000 |  |  |  |  |  |  |  |
Sale of ownership interest percentage |  | 50.00% |  |  |  |  |  |  |  |
Guarantee obligations cancelled |  | $ 3,200,000 |  |  |  |  |  |  |  |
Equity in income (loss) of Real Estate Ventures |  | 23,300,000 |  |  |  |  |  |  |  |
Net gain (loss) on real estate venture transactions |  | 14,600,000 |  |  |  |  |  |  |  |
Cash proceeds after the payment of share of the debt and closing costs |  | 27,200,000 |  |  |  |  |  |  |  |
TB-BDN Plymouth Apartments [Member] | Subsequent Event [Member] | Pennsylvania [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Construction Loan |  | $ 54,000,000 |  |  |  |  |  |  |  |
TB-BDN Plymouth Apartments [Member] | Subsequent Event [Member] | Multi-Family Complex [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Number of Property units | property |  | 398 |  |  |  |  |  |  |  |
Garza Land Sale [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Area of land under agreement to sell | a |  |  |  |  |  |  |  |  | 1.7 |
Sales price of properties sold |  |  |  |  |  |  |  |  | $ 3,500,000 |
Office Properties [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Number of properties | property |  |  | 66 |  | 27 |  | 8 |  |  |
Square feet of office space leased | ft² |  |  | 5,239,632 |  | 2,649,926 |  | 645,273 |  |  |
Gross sales price |  |  | $ 820,000,000 |  | $ 374,600,000 |  | $ 101,150,000 |  |  |
Gain (Loss) on Sale |  |  | $ 116,983,000 | [1] | $ 22,002,000 | [2],[3] | $ 4,646,000 | [4] |  |
Office Properties [Member] | 1200 and 1220 Concord Avenue in Concord [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Number of properties | property | 2 |  |  |  |  |  |  |  |  |
Square feet of office space leased | ft² | 350,256 |  |  |  |  |  |  |  |  |
Gross sales price | $ 33,100,000 |  |  |  |  |  |  |  |  |
Gain (Loss) on Sale | 500,000 |  |  |  |  |  |  |  |  |
Proceeds after closing costs and prorations | $ 32,000,000 |  |  |  |  |  |  |  |  |
[1] | Gain/(Loss) on Sale is net of closing and other transaction related costs.
[2] | Gain on Sale is net of closing and other transaction related costs.
[3] | Total gain on sale does not include a deferred gain of $0.5 million related to a prior sale.
[4] | Gain/(Loss) on sale is net of closing and other transaction related costs.

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