Properties And Equipment (Narrative) (Details) $ in Millions, $ in Millions									1 Months Ended			3 Months Ended
	Aug. 30, 2021 USD ($)	Aug. 30, 2021 NZD ($)	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	Dec. 31, 2020 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Jan. 31, 2021 AUD ($) a	Aug. 28, 2019 USD ($)
Property, Plant and Equipment [Line Items]
Depreciation expense for operating property												$ 5,400,000	$ 5,500,000
Proceeds from sale of assets													$ 65,569,000
Village East Cinema, Manhattan [Member]
Property, Plant and Equipment [Line Items]
Sale price															$ 5,900,000
Lease term															13 years
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Book value												1,425,000
Sale price												3,803,000
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											$ 4,400,000	4,351,000
Sale price												11,000,000
Impairment expense											0
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%
Proceeds from sale of assets						$ 5,300,000
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											13,600,000	13,618,000
Sale price												56,058,000
Impairment expense											$ 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
Sale price												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									$ 1,800,000	$ 30,200,000		1,824,000		$ 39.1
Sale price												$ 7,075,000
Impairment expense									$ 0	$ 0
Proceeds from sale of assets			$ 6,800,000
Invercargill, New Zealand [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Total consideration	$ 3,800,000	$ 5.4