Accounts Payable and Other Liabilities - Schedule of Accounts Payable and Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Office property payables:
Accrued expenses and accounts payable	$ 55,322	$ 43,359
Accrued property taxes	22,857	25,652
Prepaid rents	18,787	16,311
Deferred revenues	25	105
Security deposits	7,135	7,964
Below market lease value	117,718	105,504
Accumulated amortization – below market lease value	(52,844)	(29,251)
Corporate payables	4,077	11,854
Deferred tax liability	793	470
Accrued payroll	4,845	3,210
Fair value of interest rate swaps	9,026	11,077
Interest payable	5,944	6,158
Accounts Payable and Other Liabilities	$ 193,685	$ 202,413