Quarterly report pursuant to Section 13 or 15(d)

Investment in National CineMedia - Additional Information (Detail)

v3.8.0.1
Investment in National CineMedia - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Mar. 30, 2017
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]            
Equity in earnings   $ 10,902 $ 12,390 $ 26,767 $ 24,597  
Number of additional common units of NCM received under common unit adjustment agreement 1,487,218          
Value of common units received from NCM       $ 18,363 11,111  
Remaining term of exhibitor services agreement       19 years    
Number of common units of NCM owned by Company   27,871,862   27,871,862    
Interest in common units of NCM owned by Company   18.00%   18.00%    
Investment In NCM            
Schedule of Equity Method Investments [Line Items]            
Equity in earnings       $ 8,098    
Estimated fair value of investment using NCM's stock price   $ 194,546   $ 194,546    
NCM stock price   $ 6.98   $ 6.98    
Investment in NCM   $ 204,347   $ 204,347   $ 189,995
NCM            
Schedule of Equity Method Investments [Line Items]            
Equity in earnings   5,032 $ 5,815 8,098 7,660  
Investment in NCM   $ 204,347   204,347   $ 189,995
NCM | Theatre Properties and Equipment            
Schedule of Equity Method Investments [Line Items]            
Payment for installation of certain equipment used for digital advertising       $ 75 $ 41