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Intangible Assets - Schedule of Carrying Amounts and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
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Intangible assets with finite lives: |  |
Gross carrying amount | $ 601 | $ 601
Accumulated amortization | (405) | (396)
Intangible assets, net | 196 | 205
Technological know-how |  |
Intangible assets with finite lives: |  |
Gross carrying amount | 430 | 430
Accumulated amortization | (295) | (290)
Intangible assets, net | 135 | 140
Computer software |  |
Intangible assets with finite lives: |  |
Gross carrying amount | 171 | 171
Accumulated amortization | (110) | (106)
Intangible assets, net | $ 61 | $ 65

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