Screenvision Exhibition, Inc. (Details) (USD $) In Thousands, unless otherwise specified			9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 S V Holdco [Member]
Investment in unconsolidated affiliates
Balance at January 1, 2012	$ 7,960	$ 8,498	$ 7,514
Equity earnings of SV Holdco			(503)
Balance at September 30, 2012	7,960	8,498	7,011
Deferred revenue
Balance at January 1, 2012			35,162
Amortization of up-front payment			(710)
Theatre acquisition bonus- MNM Theatres			134
Amortization of Class C units			(155)
Balance at September 30, 2012			$ 34,431