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Revenue - Revenue by Geography (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Total net sales | $ 622,231 | $ 612,324
Intersegment elimination |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | (1,740) | (257)
U.S. | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 311,877 | 299,458
North America, excluding U.S. | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 23,929 | 0
Europe | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 156,058 | 164,497
Asia | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 103,536 | 95,179
Other | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 28,571 | 53,447
FMT |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 242,336 | 232,261
FMT | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 242,336 | 232,261
FMT | Intersegment elimination |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | (186) | (72)
FMT | U.S. | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 138,149 | 133,153
FMT | North America, excluding U.S. | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 13,057 | 0
FMT | Europe | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 43,624 | 43,599
FMT | Asia | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 31,917 | 26,398
FMT | Other | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 15,775 | 29,183
FMT | North America, Excluding United States Included in Other | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales |  | 13,588
HST |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 224,688 | 220,967
HST | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 224,688 | 220,967
HST | Intersegment elimination |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | (602) | (108)
HST | U.S. | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 99,051 | 93,808
HST | North America, excluding U.S. | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 4,892 | 0
HST | Europe | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 69,372 | 73,779
HST | Asia | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 48,059 | 44,548
HST | Other | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 3,916 | 8,940
HST | North America, Excluding United States Included in Other | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales |  | 3,320
FSDP |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 155,207 | 159,096
FSDP | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 155,207 | 159,096
FSDP | Intersegment elimination |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | (952) | (77)
FSDP | U.S. | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 74,677 | 72,497
FSDP | North America, excluding U.S. | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 5,980 | 0
FSDP | Europe | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 43,062 | 47,119
FSDP | Asia | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 23,560 | 24,233
FSDP | Other | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | $ 8,880 | 15,324
FSDP | North America, Excluding United States Included in Other | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales |  | $ 7,609

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