Equity Method Investment, Indemnity Asset

No definition available.

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- Definition

Litigation Settlement, Number of Annual Payment Installments

+ References

No definition available.

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- Definition

Number of payments to satisfy the fine

+ References

No definition available.

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- Definition

Litigation Settlement, Payment Period

+ References

No definition available.

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- Definition

For indemnification assets recognized in connection with a business combination, this element represents an estimate of the low-end of the potential range (undiscounted) of the indemnification benefit which may be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Amount of loss contingency liability.

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of damages paid to the plaintiff in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
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- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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-Publisher FASB
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- Definition

Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
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- Definition

Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

No definition available.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
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- Definition

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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Investment in NEC TOKIN - Equity Method Investment Reconciliation (Details) $ in Thousands, ¥ in Millions, TWD in Millions								1 Months Ended	3 Months Ended	6 Months Ended
	Jul. 26, 2016 USD ($)	May 02, 2016 USD ($) suit installment	Mar. 29, 2016 USD ($)	Mar. 29, 2016 JPY (¥)	Dec. 09, 2015 USD ($)	Dec. 09, 2015 TWD	Sep. 02, 2015 USD ($) installment	Apr. 19, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Jun. 30, 2015	May 05, 2010
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity [Abstract]
Investment in TOKIN											$ 12,296	$ 63,416
Indemnity asset for legal investigation								$ 8,500
NEC TOKIN Corporation [Member]
Related Party Transactions [Abstract]
Loss Contingency Accrual											81,600
Equity Method Investments [Member] \| Stockholders Agreement [Member]
Related Party Transactions [Abstract]
Business Combination, Indemnification Assets, Range of Outcomes, Value, Low											$ 25,000
Indemnification Agreement [Member] \| Equity Method Investments [Member]
Related Party Transactions [Abstract]
Litigation Settlement, Amount							$ (13,800)
Indemnification Agreement [Member] \| Equity Method Investments [Member] \| NEC TOKIN Corporation [Member]
Related Party Transactions [Abstract]
Litigation Settlement, Amount		$ (37,300)
Litigation Settlement, Number of Payment Installments \| installment		5
Litigation Settlement, Number of Annual Payment Installments \| installment		2
Settled Litigation [Member] \| Indemnification Agreement [Member] \| Equity Method Investments [Member]
Related Party Transactions [Abstract]
Litigation Settlement, Amount							$ (2,300)
Litigation Settlement, Payment Period							5 years
Litigation Settlement, Number of Payment Installments \| installment							6
Preliminary Settlement [Member] \| Indemnification Agreement [Member] \| Equity Method Investments [Member] \| NEC TOKIN Corporation [Member]
Related Party Transactions [Abstract]
Loss Contingency, Pending Claims, Number \| suit		2
TAIWAN, PROVINCE OF CHINA \| Taiwan, New Dollars
Related Party Transactions [Abstract]
Loss Contingency, Damages Sought, Value \| TWD						TWD 1,218.2
TAIWAN, PROVINCE OF CHINA \| Taiwan, New Dollars \| Minimum [Member]
Related Party Transactions [Abstract]
Loss Contingency, Damages Sought, Value \| TWD						TWD 609.1
TAIWAN, PROVINCE OF CHINA \| United States of America, Dollars
Related Party Transactions [Abstract]
Loss Contingency, Damages Sought, Value					$ 40,200
TAIWAN, PROVINCE OF CHINA \| United States of America, Dollars \| Minimum [Member]
Related Party Transactions [Abstract]
Loss Contingency, Damages Sought, Value					$ 20,100
JAPAN \| United States of America, Dollars
Related Party Transactions [Abstract]
Litigation Settlement, Amount			$ (1,100)
JAPAN \| Japan, Yen
Related Party Transactions [Abstract]
Litigation Settlement, Amount \| ¥				¥ (127.2)
BRAZIL \| United States of America, Dollars \| Settled Litigation [Member]
Related Party Transactions [Abstract]
Loss Contingency, Damages Paid, Value	$ 200
NEC TOKIN Corporation [Member]
Related Party Transactions [Abstract]
Sales to NEC TOKIN								727	$ 5,135	$ 8,282
NEC TOKIN's sales to KEMET								$ 356	$ 1,889	$ 3,761
KEC’s economic interest %											34.00%		34.00%
Senior Notes [Member]
Schedule of Equity Method Investments [Line Items]
Rate														10.50%