Annual report pursuant to Section 13 and 15(d)

Other Investments - Additional Information (Detail)

v3.6.0.2
Other Investments - Additional Information (Detail)
1 Months Ended 12 Months Ended 24 Months Ended
Mar. 22, 2016
USD ($)
$ / shares
Dec. 31, 2013
USD ($)
Mar. 31, 2011
$ / shares
Dec. 31, 2016
USD ($)
ProjectionSystem
RenewalOptions
shares
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2011
shares
Schedule of Equity Method Investments [Line Items]                
Number of options to purchase common stock | shares               1,222,780
Exercise price of options, per share | $ / shares     $ 0.00667          
Number of shares owned in RealD | shares       1,222,780        
Proceeds from sale of marketable securities       $ 13,451,000        
Other Affiliates                
Schedule of Equity Method Investments [Line Items]                
Cash contributions       $ 717,000 $ 3,711,000 $ 2,188,000    
Other Affiliates | 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%        
Digital projection systems leased under operating lease, initial term       12 years        
Number of equipment being leased under master equipment lease agreement | ProjectionSystem       3,795        
Number of one-year fair value renewal options | RenewalOptions       10        
Minimum annual rent per digital projection system       $ 1,000        
Cash contributions       717,000 3,211,000 2,188,000    
Other Affiliates | RealD                
Schedule of Equity Method Investments [Line Items]                
Purchase price per share | $ / shares $ 11.00              
Proceeds from sale of marketable securities $ 13,451,000              
Gain on investment       3,742,000        
Unrealized holding gain previously recorded in AOCI       3,191,000        
Other Affiliates | AC JV, LLC                
Schedule of Equity Method Investments [Line Items]                
Ownership of class A units sold to Founding Members   97.00%            
Cash contributions   $ 268,000            
Ownership of class A units   1.00%            
Ownership of class A units             31.00%  
Aggregate value of Class A units             $ 25,000,000  
Promissory note term             6 years  
Original principal value of promissory note with NCM             $ 8,333,000  
Annual interest rate on promissory note   5.00%         5.00%  
Remaining outstanding balance of note payable       4,167,000        
Other Affiliates | AC JV, LLC | Film rentals and advertising                
Schedule of Equity Method Investments [Line Items]                
Event fees       $ 10,871,000 11,440,000 9,273,000    
Other Affiliates | Digital Cinema Distribution Coalition                
Schedule of Equity Method Investments [Line Items]                
Percentage of voting interest       14.60%        
Payments for content delivery services       $ 939,000 $ 807,000 $ 741,000