Quarterly report pursuant to Section 13 or 15(d)

Other Investments - Additional Information (Detail)

v3.7.0.1
Other Investments - Additional Information (Detail) - Other Affiliates
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2013
USD ($)
Mar. 31, 2017
USD ($)
ProjectionSystem
RenewalOptions
Mar. 31, 2016
USD ($)
Dec. 31, 2013
USD ($)
Schedule of Equity Method Investments [Line Items]        
Cash contributions   $ 228,000    
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   3,794    
Number of one-year fair value renewal options | RenewalOptions   10    
Minimum annual rent per digital projection system   $ 1,000    
Cash contributions   228,000    
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    
AC JV, LLC | Film rentals and advertising        
Schedule of Equity Method Investments [Line Items]        
Event fees   $ 3,369,000 $ 2,930,000  
Digital Cinema Distribution Coalition        
Schedule of Equity Method Investments [Line Items]        
Percentage of voting interest   14.60%    
Payments for content delivery services   $ 278,000 $ 307,000