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Allocation of Personnel Expenses -Summary of Allocation of Personnel Expenses By Nature (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Share-based payments | $ (1,551) | $ 74 | $ (4,078) | $ 2,965
Total Operating expenses | 25,691 | 33,923 | 87,912 | 131,169
Expenses by Nature [Member] |  |  |  |
Wages and salaries | 3,793 | 7,021 | 12,629 | 33,121
Social security contributions | 1,110 | 933 | 3,505 | 5,669
Expenses for pension commitments | 286 | 617 | 981 | 1,116
Employer contribution to bonus shares | 497 | 981 | 1,955 | (241)
Share-based payments | 1,551 | (74) | 4,078 | (2,965)
Total Operating expenses | $ 7,236 | $ 9,477 | $ 23,148 | $ 36,701

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