Goodwill - Changes in Gross Carrying Amount of Goodwill and Accumulated Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Gross Carrying Amount	$ 624,499	$ 456,412
Accumulated Impairment Charges	(185,047)	(1,800)
Goodwill	439,452	454,612	$ 443,529
Mobile Solutions
Goodwill [Line Items]
Gross Carrying Amount	74,147	74,147
Accumulated Impairment Charges	(74,147)	0
Goodwill	0	74,147	73,263
Power Solutions
Goodwill [Line Items]
Gross Carrying Amount	205,405	204,481
Accumulated Impairment Charges	(110,900)	(1,800)
Goodwill	94,505	202,681	201,934
Life Sciences
Goodwill [Line Items]
Gross Carrying Amount	344,947	177,784
Accumulated Impairment Charges	0	0
Goodwill	$ 344,947	$ 177,784	$ 168,332

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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- Definition

Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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