Non-controlling Interests (Components Of Non-controlling Interests) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Noncontrolling Interest [Line Items]
Non-controlling interests in consolidated subsidiaries	$ 4,407	$ 4,418
Australia Country Cinemas, Pty Ltd [Member]
Noncontrolling Interest [Line Items]
Non-controlling interests in consolidated subsidiaries	244	264
Shadow View Land And Farming, LLC [Member]
Noncontrolling Interest [Line Items]
Non-controlling interests in consolidated subsidiaries	2,005	1,980
Sutton Hill Properties LLC [Member]
Noncontrolling Interest [Line Items]
Non-controlling interests in consolidated subsidiaries	$ 2,158	$ 2,174