Non-controlling Interests (Components Of Income/(Loss) Attributable To Non-controlling Interest) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests	$ 102	$ 20	[1]	$ 124	$ 32	[1]
Australian Country Cinemas, Pty Ltd [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests	93	68		133	113
Shadow View Land And Farming, LLC [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests	(13)	(11)		(25)	(27)
Sutton Hill Properties, LLC [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests	$ 22	$ (37)		$ 16	$ (54)

[1] Certain prior year balances have been reclassified to conform to the 2018 presentation (see Note 2 - Summary of Significant Accounting Policies - Reclassifications).