Quarterly report pursuant to Section 13 or 15(d)

Summary of Recognition of Revenue Related To Deferred Revenue (Detail)

v3.20.2
Summary of Recognition of Revenue Related To Deferred Revenue (Detail)
$ in Thousands
Sep. 30, 2020
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-04-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-04-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-04-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-04-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-04-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-04-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
NCM Screen Advertising Advances  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue remaining performance obligation, amount $ 346,237
NCM Screen Advertising Advances | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year
Revenue remaining performance obligation, amount $ 8,131
NCM Screen Advertising Advances | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year
Revenue remaining performance obligation, amount $ 8,693
NCM Screen Advertising Advances | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-01-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year
Revenue remaining performance obligation, amount $ 9,295
NCM Screen Advertising Advances | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-01-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year
Revenue remaining performance obligation, amount $ 9,940
NCM Screen Advertising Advances | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-01-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year
Revenue remaining performance obligation, amount $ 10,630
NCM Screen Advertising Advances | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2026-01-01  
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Revenue remaining performance obligation, amount $ 299,548