Property And Equipment (Narrative) (Details) $ in Millions, $ in Millions							1 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 09, 2021 USD ($)	Jun. 09, 2021 AUD ($)	Mar. 05, 2021 USD ($)	Mar. 04, 2021 USD ($)	Mar. 04, 2021 NZD ($)	Feb. 28, 2021 USD ($)	Jan. 31, 2021 USD ($) a	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jan. 31, 2021 AUD ($) a	Dec. 31, 2020 USD ($)	Aug. 28, 2019 USD ($)
Property, Plant and Equipment [Line Items]
Depreciation expense for operating property									$ 5,900,000	$ 5,000,000.0	$ 11,300,000	$ 10,200,000
Proceeds from sale of assets											141,363,000
Village East Cinema, Manhattan [Member]
Property, Plant and Equipment [Line Items]
Sale price															$ 5,900,000
Lease term															13 years
Coachella, CA [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Total consideration				$ 11,000,000.0
Book value	$ 4,351,000								4,351,000		4,351,000			$ 4,400,000
Sale price	11,000,000								11,000,000		11,000,000
Coachella, CA [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Shadow View Land And Farming, LLC [Member]
Property, Plant and Equipment [Line Items]
Ownership percentage by parent				50.00%
Percent of sale proceeds				50.00%
Manukau, NZ [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Total consideration					$ 56,100,000	$ 77.2
Book value	13,618,000								13,618,000		13,618,000			$ 13,600,000
Sale price	56,058,000								56,058,000		56,058,000
Proceeds from sale of assets						$ 1.0
New South Wales [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Total consideration		$ 69,600,000	$ 90.0
Book value	30,231,000								30,231,000		30,231,000
Sale price	69,579,000								69,579,000		69,579,000
Chicago [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Area of property | a								2.6					2.6
Book value	1,824,000						$ 1,800,000	$ 30,200,000	1,824,000		1,824,000		$ 39.1
Sale price	7,075,000								$ 7,075,000		$ 7,075,000
Impairment expense							$ 0	$ 0
Proceeds from sale of assets	$ 6,800,000