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Segment and Geographic Information - Schedule of Inventory by Inventory Ownership (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Total inventory | $ 31,015 | $ 16,530
United States [Member] |  |
Segment Reporting Information [Line Items] |  |
Total inventory | 11,695 | 4,715
China [Member] |  |
Segment Reporting Information [Line Items] |  |
Total inventory | $ 19,320 | $ 11,815

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- Details
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- Details
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