Summary Financial Information for DCIP (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Schedule of Equity Method Investments [Line Items]
Revenues	$ 700,056	$ 646,903	$ 2,145,386	$ 1,967,046
Operating income	99,127	82,284	324,058	267,005
Net income	46,701	38,532	160,493	146,362
Digital Cinema Implementation Partners LLC
Schedule of Equity Method Investments [Line Items]
Revenues	43,129	41,600	123,731	127,684
Operating income	26,178	24,913	72,945	75,917
Net income	$ 20,189	$ 17,759	$ 54,153	$ 42,352