Quarterly report pursuant to Section 13 or 15(d)

Summary of Activity for Each of Company's Other Investments (Detail)

v3.10.0.1
Summary of Activity for Each of Company's Other Investments (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Schedule Of Equity Method Investments [Line Items]        
Investments, beginning balance     $ 120,045  
Cash distributions received [1] $ (4,786) $ (2,402) (21,041) $ (17,321)
Equity in earnings 14,158 10,902 29,208 26,767
Other comprehensive income (loss) in equity method investments (63) $ (11) (43) $ 92
Investments, ending balance 153,101   153,101  
Other Affiliates        
Schedule Of Equity Method Investments [Line Items]        
Investments, beginning balance     120,045  
Cash contributions made     21,714  
Cash distributions received     (5,201)  
Equity in earnings     17,867  
Other comprehensive income (loss) in equity method investments     (43)  
Other     (1,281)  
Investments, ending balance 153,101   153,101  
Other Affiliates | Digital Cinema Implementation Partners        
Schedule Of Equity Method Investments [Line Items]        
Investments, beginning balance     106,215  
Cash contributions made     1,714  
Cash distributions received     (5,201)  
Equity in earnings     16,378  
Other comprehensive income (loss) in equity method investments     (43)  
Other     0  
Investments, ending balance 119,063   119,063  
Other Affiliates | AC JV, LLC        
Schedule Of Equity Method Investments [Line Items]        
Investments, beginning balance     5,916  
Cash contributions made     0  
Cash distributions received     0  
Equity in earnings     648  
Other comprehensive income (loss) in equity method investments     0  
Other     0  
Investments, ending balance 6,564   6,564  
Other Affiliates | Digital Cinema Distribution Coalition        
Schedule Of Equity Method Investments [Line Items]        
Investments, beginning balance     3,598  
Cash contributions made     0  
Cash distributions received     0  
Equity in earnings     898  
Other comprehensive income (loss) in equity method investments     0  
Other     (1,168)  
Investments, ending balance 3,328   3,328  
Other Affiliates | FE Concepts, LLC        
Schedule Of Equity Method Investments [Line Items]        
Investments, beginning balance     104  
Cash contributions made     20,000  
Cash distributions received     0  
Equity in earnings     (57)  
Other comprehensive income (loss) in equity method investments     0  
Other     (104)  
Investments, ending balance 19,943   19,943  
Other Affiliates | Other Investments        
Schedule Of Equity Method Investments [Line Items]        
Investments, beginning balance     4,212  
Cash contributions made     0  
Cash distributions received     0  
Equity in earnings     0  
Other comprehensive income (loss) in equity method investments     0  
Other     (9)  
Investments, ending balance $ 4,203   $ 4,203  
[1] Includes cash distributions received from equity investees that were recorded as a reduction of the respective investment balances (see Notes 7 and 8). These distributions are reported entirely within the U.S. operating segment.