Management Agreements and Leases - Marriott No. 5 (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) retail_property hotel	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Management Agreements and Leases [Line Items]
Number of properties | retail_property	816
Annual minimum returns and rents	$ 381,679
Security deposits	$ 109,403	$ 132,816
Hotel operating revenues
Management Agreements and Leases [Line Items]
Number of properties | hotel	329
Hotel operating revenues | Marriott (No. 5)
Management Agreements and Leases [Line Items]
Number of properties | hotel	1
Annual minimum returns and rents	$ 10,518
Realized returns and rents	$ 10,518	$ 10,321	$ 10,159