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Estimated Useful Lives of Assets (Detail) | 12 Months Ended
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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.

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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68071081&loc=d3e1205-110223 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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