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Subsequent Events | 9 Months Ended
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Sep. 30, 2019
Subsequent Events [Abstract] |
Subsequent Events [Text Block] | 13. Subsequent Events On October 1, 2019, a joint venture in which the Company has a 50% interest partially placed in-service Dock 72, a Class A office project with approximately 670,000 net rentable square feet located in Brooklyn, New York. On October 1, 2019, a joint venture in which the Company has a 50% interest partially placed in-service The Hub on Causeway - Residential, an approximately 320,000 square foot project comprised of 440 residential units located in Boston, Massachusetts. On October 24, 2019, the Company completed and placed in-service 145 Broadway, a build-to-suit Class A office project with approximately 485,000 net rentable square feet located in Cambridge, Massachusetts.

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -URI http://asc.fasb.org/topic&trid=2122774 + Details
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