Mortgages and Notes Payable - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Debt satisfaction gains (charges), net	$ 21,452	$ (4,517)	$ (2,596)
Interest paid, capitalized	$ 1,745	$ 410	15
Mortgages and Notes Payable
Debt Instrument [Line Items]
Weighted-average interest rate	4.50%	4.50%
Debt satisfaction gains (charges), net		$ 9	$ 898
Minimum | Mortgages and Notes Payable
Debt Instrument [Line Items]
Interest Rate	3.50%
Effective interest percentage		3.50%
Maximum | Mortgages and Notes Payable
Debt Instrument [Line Items]
Interest Rate	6.30%
Effective interest percentage		6.50%