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Business Segment and Geographical Information - Additional Information (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Jan. 03, 2015 Segment | Dec. 28, 2013 | Dec. 29, 2012
Segment Reporting Information [Line Items] |  |  |
Net restructuring and other expense (income) | $ 805 kai_RestructuringAndOtherCostsIncomeNet | $ 103 kai_RestructuringAndOtherCostsIncomeNet | $ 307 kai_RestructuringAndOtherCostsIncomeNet
Number of reportable segments | 2 us-gaap_NumberOfReportableSegments |  |
Papermaking systems segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Net restructuring and other expense (income) | $ 800 kai_RestructuringAndOtherCostsIncomeNet / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | $ 100 kai_RestructuringAndOtherCostsIncomeNet / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | $ 300 kai_RestructuringAndOtherCostsIncomeNet / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember

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- Definition Restructuring and other costs consist principally of severance costs; abandoned facility and other expenses of real estate consolidation; and, in some periods, may also include gains and losses on the sale of real estate. + References No definition available. + Details
Name: | kai_RestructuringAndOtherCostsIncomeNet
Namespace Prefix: | kai_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=kai_PapermakingSystemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |