Interest and Debt Expense - Details of Interest and Debt Expense (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Extinguishment of Debt [Line Items]
Proceeds from notes and mortgages payable		$ 888,566
1301 Avenue of the Americas [Member]
Extinguishment of Debt [Line Items]
Expense from non-cash write-off of deferred financing costs	$ 761	761
Proceeds from notes and mortgages payable	$ 860,000	$ 860,000