Transactions with DCIP (Detail) - Digital Cinema Implementation Partners - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Schedule of Equity Method Investments [Line Items]
Equipment lease payments	$ 1,333	$ 1,084	$ 3,864	$ 3,133
Warranty reimbursements from DCIP	(1,608)	(1,137)	(4,367)	(3,124)
Management services fees	$ 207	$ 205	$ 619	$ 619