Summary Financial Information for Digital Cinema Implementation Partners (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Schedule of Equity Method Investments [Line Items]
Operating income	$ 134,017	$ 113,909	$ 199,646	$ 203,397
Net income	20,837	52,139	53,899	95,015
Digital Cinema Implementation Partners LLC
Schedule of Equity Method Investments [Line Items]
Revenues	43,169		88,077
Operating income	28,884		55,525
Net income	$ 2,456		$ 14,264