Name:	kem_BusinessAcquisitionCostOfAcquiredEntityDiscountedPurchasePrice
Namespace Prefix:	kem_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the working capital adjustment associated with the acquisition of the acquired entity.

No definition available.

Name:	kem_BusinessAcquisitionCostOfAcquiredEntityWorkingCapitalAdjustment
Namespace Prefix:	kem_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the amount of deferred consideration, the payment of which is required under the terms of the acquisition. Such an amount is discounted using a proper discounting rate.

No definition available.

Name:	kem_BusinessAcquisitionDiscountedDeferredConsideration
Namespace Prefix:	kem_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	kem_BusinessAcquisitionDiscountedPurchasePriceAbstract
Namespace Prefix:	kem_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents the amount of royalty payments, which are required under the terms of the acquisition. Such amounts are discounted using a proper discounting rate.

No definition available.

Name:	kem_BusinessAcquisitionDiscountedRoyaltyPayments
Namespace Prefix:	kem_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585