Segment Information Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Write-off for accrued rent	$ 600	$ 35,900	$ 1,200	$ 37,400
Write-off for accounts receivable	300	$ 18,000	100	$ 18,900
Parking and Other [Member]
Segment Reporting Information [Line Items]
Increase (decrease) in parking and other revenue primarily related to COVID-19	$ 4,300		$ (3,200)