Screenvision Exhibition, Inc. - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			0 Months Ended	9 Months Ended	0 Months Ended		1 Months Ended	3 Months Ended		9 Months Ended							1 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Oct. 14, 2010 Class C Membership Units [Member]	Sep. 30, 2014 Class C Membership Units [Member]	May 05, 2014 Screenvision Exhibition, Inc. [Member]	Oct. 14, 2010 Screenvision Exhibition, Inc. [Member]	Jan. 31, 2011 Screenvision Exhibition, Inc. [Member]	Sep. 30, 2014 Screenvision Exhibition, Inc. [Member]	Sep. 30, 2013 Screenvision Exhibition, Inc. [Member]	Sep. 30, 2014 Screenvision Exhibition, Inc. [Member]	Sep. 30, 2013 Screenvision Exhibition, Inc. [Member]	Dec. 31, 2013 Screenvision Exhibition, Inc. [Member]	May 05, 2014 Screenvision Exhibition, Inc. [Member] Common Stock [Member]	Sep. 30, 2014 SV Holdco, LLC [Member]	Dec. 31, 2013 SV Holdco, LLC [Member]	Sep. 30, 2014 SV Holdco, LLC [Member] Member Units [Member]	Sep. 30, 2011 SV Holdco, LLC [Member] Class A Membership Units [Member]	Sep. 30, 2011 SV Holdco, LLC [Member] Class A Membership Units [Member] Maximum [Member]
Schedule of Equity Method Investments [Line Items]
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						20.00%															1.00%
Voluntary capital contribution made to SV Holdco																				718
Percentage of Class C and Class A membership units held																			19.00%
Carrying value of ownership interest in SV Holdco	5,863		5,863		7,073												4,947	6,188	4,947
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%		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	62,459	61,858	191,682	172,344							2,800	2,900	8,300	7,400
Intercompany gain to Company			1,469	1,305							488	510	1,469	1,305
Amounts due included in accounts receivable related to Screenvision	12,967		12,967		8,513						3,085		3,085		2,375
Business acquisition cash paid								225,000
Definitive merger agreement with Screenvision, stock value																$ 150,000