Screenvision Exhibition, Inc. - Summary of Changes in Investments in Unconsolidated Affiliates and Deferred Revenue (Detail) (USD $) In Thousands, unless otherwise specified			9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 SV Holdco, LLC [Member]
Investments in unconsolidated affiliates
Beginning balance	$ 5,863	$ 7,073	$ 6,188
Equity loss of SV Holdco			(1,241)
Ending balance	5,863	7,073	4,947
Deferred revenue
Beginning balance			32,984
Amortization of up-front payment			(710)
Amortization of Class C units			(158)
Ending balance			$ 32,116