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SEGMENT INFORMATION (Capital expenditures and depreciation expense by segment) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 28, 2015 | Mar. 29, 2014 | Mar. 28, 2015 | Mar. 29, 2014
Capital expenditures: |  |  |  |
Property, Plant and Equipment, Additions | $ 1,191 us-gaap_PropertyPlantAndEquipmentAdditions | $ 3,145 us-gaap_PropertyPlantAndEquipmentAdditions | $ 3,444 us-gaap_PropertyPlantAndEquipmentAdditions | $ 8,574 us-gaap_PropertyPlantAndEquipmentAdditions
Depreciation expense: |  |  |  |
Depreciation expense | 2,261 us-gaap_Depreciation | 2,164 us-gaap_Depreciation | 4,488 us-gaap_Depreciation | 3,827 us-gaap_Depreciation
Equipment [Member] |  |  |  |
Capital expenditures: |  |  |  |
Property, Plant and Equipment, Additions | 776 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_StatementBusinessSegmentsAxis = klic_EquipmentSegmentMember | 2,359 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_StatementBusinessSegmentsAxis = klic_EquipmentSegmentMember | 2,512 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_StatementBusinessSegmentsAxis = klic_EquipmentSegmentMember | 6,591 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_StatementBusinessSegmentsAxis = klic_EquipmentSegmentMember
Depreciation expense: |  |  |  |
Depreciation expense | 1,662 us-gaap_Depreciation / us-gaap_StatementBusinessSegmentsAxis = klic_EquipmentSegmentMember | 1,514 us-gaap_Depreciation / us-gaap_StatementBusinessSegmentsAxis = klic_EquipmentSegmentMember | 3,247 us-gaap_Depreciation / us-gaap_StatementBusinessSegmentsAxis = klic_EquipmentSegmentMember | 2,612 us-gaap_Depreciation / us-gaap_StatementBusinessSegmentsAxis = klic_EquipmentSegmentMember
Expendable Tools [Member] |  |  |  |
Capital expenditures: |  |  |  |
Property, Plant and Equipment, Additions | 415 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_StatementBusinessSegmentsAxis = klic_ExpendableToolsSegmentMember | 786 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_StatementBusinessSegmentsAxis = klic_ExpendableToolsSegmentMember | 932 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_StatementBusinessSegmentsAxis = klic_ExpendableToolsSegmentMember | 1,983 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_StatementBusinessSegmentsAxis = klic_ExpendableToolsSegmentMember
Depreciation expense: |  |  |  |
Depreciation expense | $ 599 us-gaap_Depreciation / us-gaap_StatementBusinessSegmentsAxis = klic_ExpendableToolsSegmentMember | $ 650 us-gaap_Depreciation / us-gaap_StatementBusinessSegmentsAxis = klic_ExpendableToolsSegmentMember | $ 1,241 us-gaap_Depreciation / us-gaap_StatementBusinessSegmentsAxis = klic_ExpendableToolsSegmentMember | $ 1,215 us-gaap_Depreciation / us-gaap_StatementBusinessSegmentsAxis = klic_ExpendableToolsSegmentMember

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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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