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Summary of Impairment Charges (Detail) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Total Impairment | $ 7,480,000 | $ 24,595,000 | $ 7,480,000 | $ 41,214,000
U.S. Operating Segment |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Theatre properties | 4,801,000 | 2,075,000 | 4,801,000 | 5,718,000
Theatre operating lease right-of-use assets | 2,638,000 | 1,123,000 | 2,638,000 | 7,075,000
Cost method investment |  | 2,500,000 |  | 2,500,000
Total Impairment | 7,439,000 | 5,698,000 | 7,439,000 | 15,293,000
International Operating Segment |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Theatre properties | 39,000 | 938,000 | 39,000 | 5,422,000
Theatre operating lease right-of-use assets | 2,000 | 1,654,000 | 2,000 | 4,194,000
Goodwill |  | 16,128,000 |  | 16,128,000
Intangible assets |  | 177,000 |  | 177,000
Total Impairment | $ 41,000 | $ 18,897,000 | $ 41,000 | $ 25,921,000

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228 + Details
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- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the cost method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References No definition available. + Details
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- Definition Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. + References No definition available. + Details
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