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Other Liabilities - Schedule of other liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Other Liabilities Disclosure [Abstract] |  |
Accrued employee cost | $ 15,790 | $ 19,797
Earn-out consideration | 2,905 | 5,621
Retirement benefits | 11,993 | 11,947
Compensated absences | 52,023 | 47,656
Derivative instruments | 2,756 | 20,809
Contract liabilities (Note 25) | 80,222 | 68,760
Finance lease liability | 16,297 | 30,958
Others | 63,224 | 32,850
Other Liabilities | $ 245,210 | $ 238,398
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Other Liabilities | Other Liabilities

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