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Accrued Liabilities and Other - Summary of Accrued Liabilities and Other (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Accrued Liabilities and Other Liabilities [Abstract] |  |
Accrued expenses | $ 519 | $ 242
VAT payable | 327 |
Accrued income taxes | 182 | 68
Other current liabilities | 159 | 34
Total | $ 1,187 | $ 344

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