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v3.19.3

Segment Reporting (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | $ 240,056 | $ 261,504 | $ 741,303 | $ 792,490
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 | $ 111,570 | $ 125,936 | $ 340,656 | $ 369,798
Germany |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 20,379 | 22,681 | 63,889 | 68,670
Japan |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 20,508 | 16,672 | 59,102 | 43,520
China |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 17,591 | 22,756 | 49,598 | 71,887
South Korea |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 14,543 | 12,814 | 45,098 | 42,419
Czech Republic |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 8,805 | 10,742 | 30,956 | 33,563
Canada |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 8,833 | 7,778 | 29,226 | 33,482
United Kingdom |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 8,315 | 9,037 | 23,980 | 28,349
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | 29,512 | 33,088 | 98,798 | 100,802
Non U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Product revenues | $ 128,486 | $ 135,568 | $ 400,647 | $ 422,692

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