Non-controlling Interests (Components Of Income Attributable To Non-controlling Interest) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests in consolidated subsidiaries	$ (50)	$ (38)	$ (103)	$ 88
Australian Country Cinemas Pty Ltd. [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests in consolidated subsidiaries	32	(36)	69	96
Shadow View Land And Farming, LLC [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests in consolidated subsidiaries	(43)	(16)	(77)	(41)
Sutton Hill Properties, LLC [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests in consolidated subsidiaries	$ (39)	$ 14	$ (95)	$ 33