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SEGMENT INFORMATION (Assets by segment) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 28, 2015	Sep. 27, 2014
Segment assets:
Total assets	$ 977,276us-gaap_Assets	$ 944,448us-gaap_Assets
Equipment [Member]
Segment assets:
Total assets	880,876us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = klic_EquipmentSegmentMember	839,847us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = klic_EquipmentSegmentMember
Expendable Tools [Member]
Segment assets:
Total assets	$ 96,400us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = klic_ExpendableToolsSegmentMember	$ 104,601us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = klic_ExpendableToolsSegmentMember

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ 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 210.5-02.18)

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



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

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



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 7



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 18

-Article 5

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- Details

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