Supplemental Detail for Certain Components of Consolidated Balance Sheets - Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts payable and accrued expenses
Derivative liabilities and payables - at fair value	$ 26,359	$ 7,001
Property taxes payable	18,626	14,511
Value-added tax payable	13,434	0
Accrued costs on properties under development	5,870	8,137
Other items	35,907	29,426
Total accounts payable and accrued expenses	177,039	133,765
Notes payable
Accounts payable and accrued expenses
Interest payable	75,114	73,094
Mortgages, term loans, credit line
Accounts payable and accrued expenses
Interest payable	$ 1,729	$ 1,596