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SEGMENT INFORMATION - Additional Information (Detail)	Dec. 31, 2011 Segment
Segment Reporting Disclosure [Line Items]
Number of operating segments	2

X

- Definition

Number of Operating Segments

+ References

No definition available.

+ Details

Name:	klic_NumberOfOperatingSegments
Namespace Prefix:	klic_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	klic_SegmentReportingDisclosureLineItems
Namespace Prefix:	klic_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration