Noncontrolling Interests (Components Of Noncontrolling Interests) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	$ 2,283	$ 4,098
Angelika Film Centers LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	29	1,737
Australia Country Cinemas [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	602	601
Shadow View Land And Farming LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	1,903	1,912
Sutton Hill Properties [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	$ (251)	$ (152)