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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Cash and cash equivalents | $ 134,962 |  | $ 134,962 |  | $ 160,802
Fair value of plan assets | 2,503 |  | 2,503 |  | 2,565
Accumulated depreciation of property and equipment | 58,755 |  | 58,755 |  | 53,604
Accumulated amortization of intangible assets | 29,554 |  | 29,554 |  | 27,107
Intangible Assets, Net | 15,221 |  | 15,221 |  | 17,904
Intangible Assets, Accumulated Amortization |  |  | 2,455 |  |
Intangible Assets, Foreign currency translation losses |  |  | 228 |  |
Amount of goodwill at period end | 40,264 |  | 40,264 |  | 40,351
Goodwill, acquired during period |  |  | 18 |  |
Adjustment in goodwill associated with foreign currency translation |  |  | 105 |  |
Net foreign exchange gains (losses) | 7 | $ 70 | (371) | $ 563 |
Accumulated foreign currency adjustments included in other comprehensive loss amounted | 10,111 |  | 10,111 |  | 8,749
Unrealized loss on marketable securities | 610 |  | $ 610 |  | 348
COVID-19 [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Antibody inventory reserves | 1,750 |  |  |  |
Minimum [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Intangible Assets, Amortization Period (Years) |  |  | 5 years |  |
Minimum [Member] | Buildings [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Estimated useful lives of assets |  |  | 20 years |  |
Minimum [Member] | Computer Equipment [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Estimated useful lives of assets |  |  | 2 years |  |
Minimum [Member] | Machinery and Equipment [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Estimated useful lives of assets |  |  | 2 years |  |
Minimum [Member] | Furniture and Fixtures [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Estimated useful lives of assets |  |  | 2 years |  |
Maximum [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Intangible Assets, Amortization Period (Years) |  |  | 15 years |  |
Maximum [Member] | Buildings [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Estimated useful lives of assets |  |  | 40 years |  |
Maximum [Member] | Computer Equipment [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Estimated useful lives of assets |  |  | 10 years |  |
Maximum [Member] | Machinery and Equipment [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Estimated useful lives of assets |  |  | 10 years |  |
Maximum [Member] | Furniture and Fixtures [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Estimated useful lives of assets |  |  | 10 years |  |
Money Market Fund [Member] | Level I Instruments [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Cash and cash equivalents | $ 23,862 |  | $ 23,862 |  | $ 71,489

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