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Intangible Assets-Net (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Intangible Assets [Line Items] |  |  |  |
Intangible assets with finite lives, Beginning balance |  | $ 84,953 |  | $ 105,256
Other, Gross carrying amount |  | (2,521) | [1] | (2,136)
Intangible assets with finite lives, Ending balance |  | 82,432 |  | 84,953
Intangible assets with finite lives, Accumulated amortization, Beginning balance |  | (63,870) |  | (74,603)
Accumulated amortization additions | [2] |  |  | 0
Accumulated amortization |  | (4,746) |  | (4,994)
Other Accumulated Amortization of Intangible Assets |  | 200 | [1] | 2,130
Intangible assets with finite lives, Accumulated amortization, Ending balance |  | (68,416) |  | (63,870)
Net intangible assets with finite lives, Beginning balance |  | 21,083 |  | 30,653
Intangible assets with finite lives, additions | [2] |  |  | (143)
Other, Finite lived intangible assets |  | (2,321) | [1] | (6)
Net intangible assets with finite lives, Ending balance |  | 14,016 |  | 21,083
Indefinite-lived Intangible Assets, Tradename and Other, Beginning Balance |  | 300,686 |  | 300,257
Indefinite lived intangible assets, additions | [2] |  |  | 492
Other, Tradename and Other |  | (507) | [1] | (63)
Indefinite-lived Intangible Assets, Tradename and Other, Ending Balance |  | 300,179 |  | 300,686
Total intangible assets - net, Beginning balance |  | 321,769 |  | 330,910
Other, Total intangible assets - net |  | (2,828) | [1] | (69)
Total intangible assets - net, Ending balance |  | $ 314,195 |  | 321,769
ASC Topic 842 |  |  |  |
Intangible Assets [Line Items] |  |  |  |
Impact of Adoption, Gross carrying amount | [3] |  |  | (18,024)
Impact of Adoption, Accumulated amortization | [3] |  |  | 13,597
Impact of Adoption, Finite lived intangible assets | [3] |  |  | (4,427)
Impact of Adoption, Trade and other | [3] |  |  | $ (4,427)
[1] | Includes the write-off of fully amortized intangible assets, foreign currency translation adjustments and impairment recorded related to a previously acquired theatre leasehold interest in Brazil. See Note 11 for discussion of impairment evaluations performed during the year ended December 31, 2020.
[2] | Amount represents intangible assets recorded as a result of two theatres acquired in the U.S. and final purchase price adjustment for theatres acquired in Brazil during the year ended December 31, 2018.
[3] | Amount represents intangible assets reclassified to operating lease right of use assets and finance lease assets upon the adoption of ASC 842 effective January 1, 2019.

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