Non-controlling Interests (Components Of Income/(Loss) Attributable To Non-controlling Interest) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Noncontrolling Interest [Line Items]
Net income attributable to non-controlling interests in consolidated subsidiaries	$ 22	$ 12	[1]
Australian Country Cinemas, Pty Ltd [Member]
Noncontrolling Interest [Line Items]
Net income attributable to non-controlling interests in consolidated subsidiaries	41	44
Shadow View Land And Farming, LLC [Member]
Noncontrolling Interest [Line Items]
Net income attributable to non-controlling interests in consolidated subsidiaries	(13)	(16)
Sutton Hill Properties, LLC [Member]
Noncontrolling Interest [Line Items]
Net income attributable to non-controlling interests in consolidated subsidiaries	$ (6)	$ (16)

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