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Summary of Impairment Charges (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |  |  |
Goodwill | [1] |  |  | $ 16,128 |  |
Total Impairment |  | $ 24,595 | $ 27,304 | 41,214 |  | $ 45,382
U.S. Operating Segment |  |  |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |  |  |
Theatre properties |  | 2,075 | 24,502 | 5,718 |  | 26,754
Theatre operating lease right-of-use assets |  | 1,123 | 2,157 | 7,075 |  | 10,204
Cost method investment |  | 2,500 |  | 2,500 |  |
Total Impairment |  | 5,698 | 26,659 | 15,293 |  | 36,958
International Operating Segment |  |  |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |  |  |
Theatre properties |  | 938 | 645 | 5,422 |  | 6,796
Theatre operating lease right-of-use assets |  | 1,654 |  | 4,194 |  | 1,628
Goodwill |  | 16,128 |  | 16,128 | [1] |
Intangible assets |  | 177 |  | 177 |  |
Total Impairment |  | $ 18,897 | $ 645 | $ 25,921 |  | $ 8,424
[1] | See Note 13 for discussion of impairment evaluations performed during the nine months ended September 30, 2020.

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