Other Investments (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Investments in and Advances to Affiliates [Line Items]
Investments in and advances to affiliates	$ 87,031	$ 94,973
Other Affiliates
Investments in and Advances to Affiliates [Line Items]
Investments in and advances to affiliates	87,031	94,973
Digital Cinema Implementation Partners LLC | Other Affiliates
Investments in and Advances to Affiliates [Line Items]
Investments in and advances to affiliates	75,690	71,579
AC JV, LLC | Other Affiliates
Investments in and Advances to Affiliates [Line Items]
Investments in and advances to affiliates	7,636	7,269
Digital Cinema Distribution Coalition | Other Affiliates
Investments in and Advances to Affiliates [Line Items]
Investments in and advances to affiliates	3,043	2,562
Other Investment | Other Affiliates
Investments in and Advances to Affiliates [Line Items]
Investments in and advances to affiliates	$ 662	$ 663