Quarterly report pursuant to Section 13 or 15(d)

Other Investments - Additional Information (Detail)

v3.8.0.1
Other Investments - Additional Information (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2018
USD ($)
ProjectionSystem
Mar. 31, 2017
USD ($)
Digital Cinema Implementation Partners    
Schedule Of Equity Method Investments [Line Items]    
Percentage of voting interest 33.00%  
Economic interest in Digital Cinema Implementation Partners 24.30%  
Number of equipment being leased under master equipment lease agreement | ProjectionSystem 3,817  
AC JV, LLC    
Schedule Of Equity Method Investments [Line Items]    
Remaining outstanding balance of note payable $ 2,778  
AC JV, LLC | Film rentals and advertising    
Schedule Of Equity Method Investments [Line Items]    
Event fees $ 2,571 $ 3,369
Digital Cinema Distribution Coalition    
Schedule Of Equity Method Investments [Line Items]    
Percentage of voting interest 14.60%  
Payments for content delivery services $ 234 $ 278