Quarterly report pursuant to Section 13 or 15(d)

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

v3.7.0.1
Summary of Activity for Each of Company's Other Investments (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Dec. 31, 2013
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Schedule of Equity Method Investments [Line Items]          
Investments, beginning balance       $ 98,317  
Cash distributions [1]   $ (2,870) $ (184) (14,919) $ (8,270)
Equity in income   5,805 5,065 15,865 12,207
Equity in other comprehensive income   (95) $ 146 103 $ (176)
Investments, ending balance   106,345   106,345  
AC JV, LLC          
Schedule of Equity Method Investments [Line Items]          
Cash contributions $ 268        
Other Affiliates          
Schedule of Equity Method Investments [Line Items]          
Investments, beginning balance       98,317  
Cash contributions       466  
Cash distributions       (5,212)  
Equity in income       12,800  
Equity in other comprehensive income       103  
Other       (129)  
Investments, ending balance   106,345   106,345  
Other Affiliates | Digital Cinema Implementation Partners          
Schedule of Equity Method Investments [Line Items]          
Investments, beginning balance       87,819  
Cash contributions       466  
Cash distributions       (5,212)  
Equity in income       10,763  
Equity in other comprehensive income       103  
Other       0  
Investments, ending balance   93,939   93,939  
Other Affiliates | AC JV, LLC          
Schedule of Equity Method Investments [Line Items]          
Investments, beginning balance       5,980  
Cash contributions       0  
Cash distributions       0  
Equity in income       1,238  
Equity in other comprehensive income       0  
Other       0  
Investments, ending balance   7,218   7,218  
Other Affiliates | Digital Cinema Distribution Coalition          
Schedule of Equity Method Investments [Line Items]          
Investments, beginning balance       2,750  
Cash contributions       0  
Cash distributions       0  
Equity in income       799  
Equity in other comprehensive income       0  
Other       0  
Investments, ending balance   3,549   3,549  
Other Affiliates | Other Investments          
Schedule of Equity Method Investments [Line Items]          
Investments, beginning balance       1,768  
Cash contributions       0  
Cash distributions       0  
Equity in income       0  
Equity in other comprehensive income       0  
Other       (129)  
Investments, ending balance   $ 1,639   $ 1,639  
[1] Includes cash distributions received from equity investees that were recorded as a reduction of the respective investment balances (see Notes 6 and 7).