Screenvision Transaction (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended				1 Months Ended	0 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Aug. 31, 2010	Sep. 30, 2011 Class A membership units [Member]	Oct. 14, 2010 Class C membership units [Member]	Dec. 31, 2012 Class C membership units [Member]	Jan. 31, 2011 Screenvision [Member]	Dec. 31, 2012 Screenvision [Member]	Dec. 31, 2011 Screenvision [Member]	Dec. 31, 2010 Screenvision [Member]
Screenvision Transaction (Textual) [Abstract]
Exhibition agreement, expiration date									Jul. 01, 2012
Modified Exhibition Agreement, additional term									30 years
Modified Exhibition Agreement, expiration date									Jul. 01, 2042
Cash received on Modified Exhibition Agreement								$ 30,000
Voluntary capital contribution made to SV Holdco					718
Percentage of issued and outstanding membership units received					1.00%	20.00%
Percentage of Class C and Class A membership units held	100.00%			14.00%					19.00%
Carrying value of ownership interest in SV Holdco	7,682	8,498							6,740
Threshold amount applicable for future profits and appreciation in assets						85,000	88,000
Maximum forfeiture limit							25.00%
Maximum bonus units to be received							33.00%
Non-forfeitable ownership interest at estimated fair value									6,555
Non-forfeitable Class C and Class A membership units									15.00%	15.00%
Recognized concessions and other revenue received									30,000
Aggregate amount deferred to be recognized as concessions and other revenue									36,555
Concessions and other	196,233	170,709	161,193						9,259	9,550	10,227
Intercompany gain to Company									1,634	1,685	369
Amounts due included in accounts receivable related to Screenvision	$ 6,555	$ 4,985							$ 2,030	$ 1,860