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Prepaid expenses and other current assets - Schedule of prepaid expenses and other current assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Prepaid Expense and Other Assets, Current [Abstract] |  |
Advance income and non-income taxes | $ 28,075 | $ 73,008
Contract asset (Note 25) | 8,506 | 9,035
Prepaid expenses | 38,528 | 32,375
Derivative instruments | 19,194 | 21,545
Employee advances | 2,797 | 2,636
Deposits | 5,839 | 8,774
Advances to suppliers | 804 | 2,716
Others | 30,698 | 37,319
Prepaid expenses and other current assets, net | $ 134,441 | $ 187,408

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