Screenvision Exhibition Inc (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended			1 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	1 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Sep. 30, 2011 Class A membership units [Member]	Oct. 14, 2010 Class C membership units [Member]	Mar. 31, 2013 Class C membership units [Member]	Oct. 14, 2010 Screenvision [Member]	Jan. 31, 2011 Screenvision [Member]	Mar. 31, 2013 Screenvision [Member]	Mar. 31, 2012 Screenvision [Member]	Dec. 31, 2012 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
Percentage of issued and outstanding membership units received				1.00%	20.00%
Voluntary capital contribution made to SV Holdco				718
Percentage of Class C and Class A membership units held	100.00%								19.00%
Carrying value of ownership interest in SV Holdco	6,231		7,682						5,298
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	48,571	47,276							2,007	2,253
Intercompany gain to Company									354	397
Amounts due included in accounts receivable related to Screenvision	$ 5,461		$ 6,555						$ 1,073		$ 2,030