Non-controlling Interests (Components Of Income Attributable To Non-controlling Interest) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Noncontrolling Interest [Line Items]
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries	$ (105)	$ (124)	$ 2,889	$ (389)
Australian Country Cinemas, Pty Ltd [Member]
Noncontrolling Interest [Line Items]
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries	6	(35)	48	(80)
Shadow View Land And Farming, LLC [Member]
Noncontrolling Interest [Line Items]
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries		(5)	3,166	(48)
Sutton Hill Properties, LLC [Member]
Noncontrolling Interest [Line Items]
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries	$ (111)	$ (84)	$ (325)	$ (261)