Equity Method Investments - Summarized Financial Information (Details) - NEC TOKIN Corporation - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Apr. 19, 2017	Mar. 31, 2017
Income Statement Related Disclosures [Abstract]
Net sales	$ 23,649	$ 328,822
Gross profit	6,647	74,465
Net income	$ 247,786	$ 128,502

The amount of net income (loss) reported by an equity method investment of the entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 7
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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