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Business Segment and Geographical Information - Revenues and Assets (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 03, 2015 | Sep. 27, 2014 | Jun. 28, 2014 | Mar. 29, 2014 | Dec. 28, 2013 | Sep. 28, 2013 | Jun. 29, 2013 | Mar. 30, 2013 | Jan. 03, 2015 | Dec. 28, 2013 | Dec. 29, 2012
Revenues by Product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 105,206 us-gaap_SalesRevenueNet | $ 98,719 us-gaap_SalesRevenueNet | $ 104,835 us-gaap_SalesRevenueNet | $ 93,367 us-gaap_SalesRevenueNet | $ 94,815 us-gaap_SalesRevenueNet | $ 91,315 us-gaap_SalesRevenueNet | $ 82,165 us-gaap_SalesRevenueNet | $ 76,204 us-gaap_SalesRevenueNet | $ 402,127 us-gaap_SalesRevenueNet | $ 344,499 us-gaap_SalesRevenueNet | $ 331,751 us-gaap_SalesRevenueNet
Income from Continuing Operations Before Provision for Income Taxes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from Continuing Operations Before Provision for Income Taxes |  |  |  |  |  |  |  |  | 41,518 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 33,026 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 35,930 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Total operating income |  |  |  |  |  |  |  |  | 42,086 us-gaap_OperatingIncomeLoss | 33,303 us-gaap_OperatingIncomeLoss | 36,444 us-gaap_OperatingIncomeLoss
Interest expense, net |  |  |  |  |  |  |  |  | (568)us-gaap_InterestIncomeExpenseNet | (277)us-gaap_InterestIncomeExpenseNet | (514)us-gaap_InterestIncomeExpenseNet
Total Assets: |  |  |  |  |  |  |  |  |  |  |
Total Assets from Continuing Operations | 413,631 kai_TotalAssetsFromContinuingOperations |  |  |  | 442,024 kai_TotalAssetsFromContinuingOperations |  |  |  | 413,631 kai_TotalAssetsFromContinuingOperations | 442,024 kai_TotalAssetsFromContinuingOperations | 358,435 kai_TotalAssetsFromContinuingOperations
Total Assets from Discontinued Operations | 116 kai_TotalAssetsFromDiscontinuedOperations |  |  |  | 144 kai_TotalAssetsFromDiscontinuedOperations |  |  |  | 116 kai_TotalAssetsFromDiscontinuedOperations | 144 kai_TotalAssetsFromDiscontinuedOperations | 513 kai_TotalAssetsFromDiscontinuedOperations
Total Assets | 413,747 us-gaap_Assets |  |  |  | 442,168 us-gaap_Assets |  |  |  | 413,747 us-gaap_Assets | 442,168 us-gaap_Assets | 358,948 us-gaap_Assets
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 11,189 us-gaap_DepreciationDepletionAndAmortization | 9,775 us-gaap_DepreciationDepletionAndAmortization | 8,384 us-gaap_DepreciationDepletionAndAmortization
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 6,755 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 6,261 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 4,250 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Long-lived assets | 44,965 us-gaap_NoncurrentAssets |  |  |  | 44,885 us-gaap_NoncurrentAssets |  |  |  | 44,965 us-gaap_NoncurrentAssets | 44,885 us-gaap_NoncurrentAssets | 39,168 us-gaap_NoncurrentAssets
Export Revenues Included in United States Revenues Above |  |  |  |  |  |  |  |  | 6,508 kai_ExportRevenuesIncludedInUnitedStatesRevenuesAbove | 9,685 kai_ExportRevenuesIncludedInUnitedStatesRevenuesAbove | 20,871 kai_ExportRevenuesIncludedInUnitedStatesRevenuesAbove
United States |  |  |  |  |  |  |  |  |  |  |
Revenues by Product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 174,003 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US | 129,131 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US | 128,663 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |
Long-lived assets | 15,685 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US |  |  |  | 14,118 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US |  |  |  | 15,685 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US | 14,118 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US | 13,702 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US
China |  |  |  |  |  |  |  |  |  |  |
Revenues by Product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 43,867 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CN | 50,678 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CN | 53,242 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CN
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |
Long-lived assets | 13,996 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_CN |  |  |  | 14,603 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_CN |  |  |  | 13,996 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_CN | 14,603 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_CN | 15,136 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_CN
Other |  |  |  |  |  |  |  |  |  |  |
Revenues by Product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 184,257 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = kai_SegmentGeographicalGroupsOfCountriesOtherCountriesMember | 164,690 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = kai_SegmentGeographicalGroupsOfCountriesOtherCountriesMember | 149,846 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = kai_SegmentGeographicalGroupsOfCountriesOtherCountriesMember
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |
Long-lived assets | 15,284 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = kai_SegmentGeographicalGroupsOfCountriesOtherCountriesMember |  |  |  | 16,164 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = kai_SegmentGeographicalGroupsOfCountriesOtherCountriesMember |  |  |  | 15,284 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = kai_SegmentGeographicalGroupsOfCountriesOtherCountriesMember | 16,164 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = kai_SegmentGeographicalGroupsOfCountriesOtherCountriesMember | 10,330 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = kai_SegmentGeographicalGroupsOfCountriesOtherCountriesMember
Papermaking Systems Segment |  |  |  |  |  |  |  |  |  |  |
Revenues by Product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 348,199 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 328,708 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 321,026 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Income from Continuing Operations Before Provision for Income Taxes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from Continuing Operations Before Provision for Income Taxes |  |  |  |  |  |  |  |  | 50,485 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 47,144 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 48,618 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Total Assets: |  |  |  |  |  |  |  |  |  |  |
Total Assets from Continuing Operations | 343,937 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember |  |  |  | 364,102 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember |  |  |  | 343,937 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 364,102 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 347,540 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 7,724 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 8,434 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 7,903 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 5,640 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 5,843 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 3,982 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Wood Processing Systems |  |  |  |  |  |  |  |  |  |  |
Revenues by Product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 41,647 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember | 4,573 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember | 0 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember
Income from Continuing Operations Before Provision for Income Taxes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from Continuing Operations Before Provision for Income Taxes |  |  |  |  |  |  |  |  | 6,977 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember | (382)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember
Total Assets: |  |  |  |  |  |  |  |  |  |  |
Total Assets from Continuing Operations | 55,634 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember |  |  |  | 63,493 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember |  |  |  | 55,634 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember | 63,493 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember | 0 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 2,977 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember | 850 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember | 0 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = kai_WoodProcessingSystemsSegmentMember
Fiber-based Products |  |  |  |  |  |  |  |  |  |  |
Revenues by Product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 12,281 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = kai_FiberBasedProductsMember | 11,218 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = kai_FiberBasedProductsMember | 10,725 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = kai_FiberBasedProductsMember
Corporate and Fiber-based Products |  |  |  |  |  |  |  |  |  |  |
Income from Continuing Operations Before Provision for Income Taxes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from Continuing Operations Before Provision for Income Taxes |  |  |  |  |  |  |  |  | (15,376)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember | (13,459)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember | (12,174)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember
Total Assets: |  |  |  |  |  |  |  |  |  |  |
Total Assets from Continuing Operations | 14,060 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember |  |  |  | 14,429 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember |  |  |  | 14,060 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember | 14,429 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember | 10,895 kai_TotalAssetsFromContinuingOperations / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 488 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember | 491 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember | 481 us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 1,115 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember | 418 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember | 268 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = kai_CorporateAndFiberBasedProductsMember
Stock-Preparation | Papermaking Systems Segment |  |  |  |  |  |  |  |  |  |  |
Revenues by Product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 127,496 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = kai_StockPreparationMember / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 122,704 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = kai_StockPreparationMember / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 123,952 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = kai_StockPreparationMember / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Doctoring, Cleaning, & Filtration | Papermaking Systems Segment |  |  |  |  |  |  |  |  |  |  |
Revenues by Product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 117,389 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = kai_DoctoringCleaningAndFiltrationMember / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 112,600 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = kai_DoctoringCleaningAndFiltrationMember / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | 104,493 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = kai_DoctoringCleaningAndFiltrationMember / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Fluid-Handling | Papermaking Systems Segment |  |  |  |  |  |  |  |  |  |  |
Revenues by Product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 103,314 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = kai_FluidHandlingMember / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | $ 93,404 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = kai_FluidHandlingMember / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember | $ 92,581 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = kai_FluidHandlingMember / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember

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