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Non-controlling Interests (Components Of Income Attributable To Non-controlling Interest) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Noncontrolling Interest [Line Items]        
Net income attributable to noncontrolling interests $ (38) $ (98) $ 88 $ (66)
Australian Country Cinemas, Pty Ltd [Member]        
Noncontrolling Interest [Line Items]        
Net income attributable to noncontrolling interests (36) 72 96 184
Shadow View Land And Farming, LLC [Member]        
Noncontrolling Interest [Line Items]        
Net income attributable to noncontrolling interests (16) (132) (41) (158)
Sutton Hill Properties, LLC [Member]        
Noncontrolling Interest [Line Items]        
Net income attributable to noncontrolling interests $ 14 $ (38) $ 33 $ (92)