Supplemental Detail for Certain Components of Consolidated Balance Sheets - Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Accounts payable and accrued expenses consist of the following at:
Property taxes payable	$ 19,073	$ 14,511
Derivative liabilities and payables - at fair value	15,794	7,001
Accrued costs on properties under development	10,978	8,137
Value-added tax payable	10,644	0
Other items	24,218	29,426
Total accounts payable and accrued expenses	156,859	133,765
Notes payable
Accounts payable and accrued expenses consist of the following at:
Interest payable	74,879	73,094
Mortgages, term loans, and credit line
Accounts payable and accrued expenses consist of the following at:
Interest payable	$ 1,273	$ 1,596