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INVENTORIES (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
INVENTORIES [Abstract] |  |
Cost of sales | $ 47,362 | $ 55,507

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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration