Screenvision Exhibition, Inc. - Summary of Changes in Investments in Unconsolidated Affiliates and Deferred Revenue (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Investments in unconsolidated affiliates
Beginning balance		$ 5,079
Ending balance	5,866	5,079
SV Holdco, LLC [Member]
Investments in unconsolidated affiliates
Beginning balance	4,195
Equity income of SV Holdco	834
Ending balance	5,029
Deferred revenue
Beginning balance	31,827
Amortization of up-front payment	(237)
Amortization of Class C units	(53)
Ending balance	$ 31,537