Non-controlling Interests (Components Of Non-controlling Interests) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	$ 4,223	$ 4,337
Australian Country Cinemas Pty Ltd. [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	38	89
Shadow View Land And Farming, LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	2,146	2,153
Sutton Hill Properties, LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	$ 2,039	$ 2,095