Revenue - Revenue by Geography (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Total net sales	$ 612,324
Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(257)
U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	299,458
Europe | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	164,497
Asia | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	95,179
Rest of world | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	53,447
FMT
Disaggregation of Revenue [Line Items]
Total net sales	232,261
FMT | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	232,261
FMT | Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(72)
FMT | U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	133,153
FMT | Europe | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	43,599
FMT | Asia | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	26,398
FMT | Rest of world | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	29,183
HST
Disaggregation of Revenue [Line Items]
Total net sales	220,967
HST | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	220,967
HST | Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(108)
HST | U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	93,808
HST | Europe | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	73,779
HST | Asia | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	44,548
HST | Rest of world | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	8,940
ESDP
Disaggregation of Revenue [Line Items]
Total net sales	159,096
ESDP | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	159,096
ESDP | Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(77)
ESDP | U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	72,497
ESDP | Europe | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	47,119
ESDP | Asia | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	24,233
ESDP | Rest of world | Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	$ 15,324