Annual report pursuant to Section 13 and 15(d)

Estimated Useful Lives of Assets (Detail)

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Estimated Useful Lives of Assets (Detail)
12 Months Ended
Dec. 31, 2017
Buildings On Owned Land  
Property, Plant and Equipment [Line Items]  
Estimated useful life of assets 40 years
Buildings On Leased Land  
Property, Plant and Equipment [Line Items]  
Estimated useful life of assets Lesser of lease term or useful life
Land and Buildings Under Capital Lease  
Property, Plant and Equipment [Line Items]  
Estimated useful life of assets Lesser of lease term or useful life [1]
Theatre furniture and equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life of assets 3 years
Theatre furniture and equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life of assets 15 years
Leasehold Improvements  
Property, Plant and Equipment [Line Items]  
Estimated useful life of assets Lesser of lease term or useful life
[1] Amortization of capital lease assets is included in depreciation and amortization expense on the consolidated statements of income. Accumulated amortization of capital lease assets as of December 31, 2016 and 2017 was $175,166 and $200,683, respectively.