Second part of loan from Portuguese Government

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
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Disclosure of timing of required repayments, sinking fund requirements, and other redeemable securities at fixed or determinable prices and dates in the five years immediately following the date of the latest balance sheet presented in the financial statements, and the amount thereafter to fully repay the principal of long-term debt. These disclosures may be made either on an individual debt or security basis, by type of debt or security basis, or on a combined basis.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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-Section 50
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Amount of cash outflow for the payment of debt classified as other.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Debt - Other (Details) € in Thousands, $ in Thousands, ¥ in Millions	1 Months Ended				3 Months Ended		96 Months Ended
	Sep. 30, 2017 USD ($) Rate	Sep. 30, 2017 JPY (¥) Rate	Jul. 31, 2017 EUR (€)	Jul. 31, 2017 USD ($)	Mar. 31, 2017 EUR (€)	Mar. 31, 2017 USD ($)	Feb. 01, 2025 EUR (€)	Feb. 01, 2025 USD ($)	Mar. 31, 2018 EUR (€)	Mar. 31, 2018 USD ($)
Debt Instrument [Line Items]
Second part of loan			€ 277	$ 325
Other Debt Obligations
Debt Instrument [Line Items]
Proceeds from issuance of debt					€ 2,200	$ 2,500
Unamortized discount									€ 600	$ 700
Other Debt Obligations \| TOKIN
Debt Instrument [Line Items]
Proceeds from issuance of debt	$ 3,300	¥ 350
Stated interest rate (as a percent)	0.53%	0.53%
Spread on variable rate basis (as a percent)	0.40%	0.40%
Other Debt Obligations \| Forecast
Debt Instrument [Line Items]
Repayment terms							P8Y	P8Y
Repayments of other debt							€ 185	$ 211
Other Debt Obligations \| Forecast \| Remaining Repayment
Debt Instrument [Line Items]
Repayments of other debt							€ 210	$ 248