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v3.20.2

Segment Reporting (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | $ 136,061 | $ 243,326 | $ 364,674 | $ 501,247
Type of Revenue [Extensible List] | us-gaap:ProductMember | us-gaap:ProductMember | us-gaap:ProductMember | us-gaap:ProductMember
United States |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | $ 47,097 | $ 110,632 | $ 153,015 | $ 229,086
Germany |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 9,761 | 20,300 | 26,591 | 43,510
South Korea |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 20,385 | 15,577 | 36,802 | 30,555
Japan |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 9,349 | 20,003 | 25,486 | 38,594
China |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 23,517 | 16,410 | 36,520 | 32,007
Czech Republic |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 5,520 | 10,009 | 15,593 | 22,151
Canada |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 3,089 | 10,102 | 11,351 | 20,393
Romania |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 2,960 | 6,009 | 10,619 | 12,931
United Kingdom |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 1,405 | 6,833 | 8,369 | 15,665
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 12,978 | 27,451 | 40,328 | 56,355
Non U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | $ 88,964 | $ 132,694 | $ 211,659 | $ 272,161

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