Non-controlling Interests (Components Of Income Attributable To Non-controlling Interest) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests in consolidated subsidiaries	$ (37)	$ 102	$ (53)	$ 124
Australian Country Cinemas Pty Ltd. [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests in consolidated subsidiaries	28	93	36	133
Shadow View Land And Farming, LLC [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests in consolidated subsidiaries	(20)	(13)	(34)	(25)
Sutton Hill Properties, LLC [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests in consolidated subsidiaries	$ (45)	$ 22	$ (55)	$ 16