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Segment and Revenue by Geography and by Major Customer - Summary of Geographic Revenues (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Geographic Areas Revenues From External Customers [Line Items] |  |  |
Revenues | $ 70,684 | $ 56,910 | $ 60,041
Israel |  |  |
Geographic Areas Revenues From External Customers [Line Items] |  |  |
Revenues | 1,670 | 1,028 | 1,470
China |  |  |
Geographic Areas Revenues From External Customers [Line Items] |  |  |
Revenues | 15,574 | 11,989 | 7,268
Hong Kong |  |  |
Geographic Areas Revenues From External Customers [Line Items] |  |  |
Revenues | 13,964 | 9,780 | 11,267
United States |  |  |
Geographic Areas Revenues From External Customers [Line Items] |  |  |
Revenues | 10,842 | 7,969 | 12,189
Mexico |  |  |
Geographic Areas Revenues From External Customers [Line Items] |  |  |
Revenues | 2,381 | 7,708 | 9,065
Japan |  |  |
Geographic Areas Revenues From External Customers [Line Items] |  |  |
Revenues | 7,669 | 6,802 | 8,895
Other |  |  |
Geographic Areas Revenues From External Customers [Line Items] |  |  |
Revenues | $ 18,584 | $ 11,634 | $ 9,887

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. 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