Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap liabilities - current	$ (373)	$ (4,255)
Interest rate swap liabilities - long term		(317)
Other Investments	94,973	77,658
Other Affiliates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Investments	94,973	77,658	$ 59,657	$ 38,201
Other Affiliates | RealD
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Investments	12,900	14,429	$ 10,443	$ 13,707
Level 1 | Other Affiliates | RealD
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Investments	12,900	14,429
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap liabilities - current	$ (373)	(4,255)
Interest rate swap liabilities - long term		$ (317)