Related Party Transactions - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Feb. 13, 2019
Related Party Transaction [Line Items]
Related party interest income	$ (32,807,000)	$ (13,243,000)	$ (77,050,000)	$ (23,690,000)
Due from affiliates	$ 10,273,000		$ 10,273,000		$ 6,157,000
Related parties note receivable, RED Consolidated Holdings, LLC
Related Party Transaction [Line Items]
Note receivable, interest rate	5.25%		5.25%		5.25%
Interest income, related party	$ 0	46,000	$ 0	94,000
Joint Venture | Financing Arrangement
Related Party Transaction [Line Items]
Related party interest income	(32,807,000)	$ (13,243,000)	(77,050,000)	(23,690,000)
Unconsolidated Joint Ventures
Related Party Transaction [Line Items]
Due from affiliates	$ 10,273,000		10,273,000		$ 6,157,000
Affiliated Entity | Notes Receivable | Fashion Outlets of San Francisco
Related Party Transaction [Line Items]
Interest income, related party			$ 0	$ 1,112,000
Affiliated Entity | Notes Receivable | Fashion Outlets of San Francisco | LIBOR
Related Party Transaction [Line Items]
Note receivable, interest rate						2.00%