Non-controlling Interests (Components Of Income/(Loss) Attributable To Non-controlling Interest) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016		Sep. 30, 2017	Sep. 30, 2016
Noncontrolling Interest [Line Items]
Net income (loss) attributable to non-controlling interests in consolidated subsidiaries	$ (98)	$ 62	[1]	$ (66)	$ 12	[1]
Australian Country Cinemas, Pty Ltd [Member]
Noncontrolling Interest [Line Items]
Net income (loss) attributable to non-controlling interests in consolidated subsidiaries	72	79		184	137
Shadow View Land And Farming, LLC [Member]
Noncontrolling Interest [Line Items]
Net income (loss) attributable to non-controlling interests in consolidated subsidiaries	(132)	(12)		(158)	(29)
Sutton Hill Properties, LLC [Member]
Noncontrolling Interest [Line Items]
Net income (loss) attributable to non-controlling interests in consolidated subsidiaries	$ (38)	$ (5)		$ (92)	$ (96)

[1] Certain 2016 balances have been reclassified to conform to the 2017 presentation (see Note 2 - Summary of Significant Accounting Policies - Reclassifications).