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Acquisitions - Additional Information (Details) In Thousands, unless otherwise specified | 12 Months Ended | 0 Months Ended |  | 12 Months Ended | 0 Months Ended | 1 Months Ended |  | 0 Months Ended | 12 Months Ended |  | 0 Months Ended | 12 Months Ended |
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Jan. 03, 2015 USD ($) | Dec. 28, 2013 USD ($) | Dec. 29, 2012 USD ($) | Oct. 31, 2014 Certain assets of the screen cylinder business of a U.S.-based company USD ($) | Dec. 30, 2013 European Producer of Creping and Coating Blades USD ($) | Jan. 03, 2015 European Producer of Creping and Coating Blades USD ($) | Jan. 03, 2015 European Producer of Creping and Coating Blades EUR (€) | Jan. 03, 2015 2014 Acquisitions USD ($) | Jan. 03, 2015 2013 Acquisitions USD ($) | Dec. 28, 2013 2013 Acquisitions USD ($) | Apr. 12, 2013 Companhia Brasileira de Tecnologia Industrial (CBTI) USD ($) | Feb. 28, 2014 Companhia Brasileira de Tecnologia Industrial (CBTI) USD ($) | Apr. 12, 2013 Companhia Brasileira de Tecnologia Industrial (CBTI) USD ($) | May 03, 2013 Noss Group (Noss) USD ($) | Jan. 03, 2015 Noss Group (Noss) USD ($) | May 03, 2013 Noss Group (Noss) USD ($) | Nov. 06, 2013 Carmanah USD ($) | Jan. 03, 2015 Carmanah USD ($) | Nov. 06, 2013 Carmanah USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition transaction costs | $ 326 us-gaap_BusinessCombinationAcquisitionRelatedCosts | $ 1,802 us-gaap_BusinessCombinationAcquisitionRelatedCosts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash payments in acquisition | 12,658 us-gaap_PaymentsToAcquireBusinessesGross | 67,453 us-gaap_PaymentsToAcquireBusinessesGross | 0 us-gaap_PaymentsToAcquireBusinessesGross | 9,174 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = kai_ScreenCylinderBusinessOfU.S.BasedCompanyMember | 2,666 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = kai_EuropeanProducerofCrepingandCoatingBladesMember |  |  | 11,840 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = kai_A2014AcquisitionsMember |  | 68,271 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = kai_A2013AcquisitionsMember | 8,140 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = kai_CompanhiaBrasileiraDeTecnologiaIndustrialCbtiMember |  |  | 7,196 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = kai_NossGroupNossMember |  |  | 52,281 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = kai_CarmanahMember |  |
Cash acquired from acquisition |  |  |  |  | 674 us-gaap_CashAcquiredFromAcquisition / us-gaap_BusinessAcquisitionAxis = kai_EuropeanProducerofCrepingandCoatingBladesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  |  |  |  |  | 1,210 us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = kai_EuropeanProducerofCrepingandCoatingBladesMember | 1,000 us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = kai_EuropeanProducerofCrepingandCoatingBladesMember |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, fair value |  |  |  |  |  | 1,133 kai_ContingentConsiderationFairValueDisclosure / us-gaap_BusinessAcquisitionAxis = kai_EuropeanProducerofCrepingandCoatingBladesMember |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average useful life of acquired intangible assets | 11 years |  |  |  |  |  |  | 9 years |  |  |  |  |  |  |  |  |  |  |
Goodwill | 127,882 us-gaap_Goodwill | 131,915 us-gaap_Goodwill | 107,947 us-gaap_Goodwill |  |  |  |  | 3,463 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = kai_A2014AcquisitionsMember |  | 24,744 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = kai_A2013AcquisitionsMember |  |  |  |  |  |  |  |  |
Goodwill, expected tax deductible amount |  |  |  |  |  |  |  | 2,004 us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount / us-gaap_BusinessAcquisitionAxis = kai_A2014AcquisitionsMember |  |  |  |  |  |  |  |  |  |  |
Post-closing adjustment payments, for prior acquisitions |  |  |  |  |  |  |  |  | 818 us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred / us-gaap_BusinessAcquisitionAxis = kai_A2013AcquisitionsMember |  |  |  |  |  |  |  |  |  |
Cost of acquired entity, liabilities assumed |  |  |  |  |  |  |  |  |  |  | 484 us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred / us-gaap_BusinessAcquisitionAxis = kai_CompanhiaBrasileiraDeTecnologiaIndustrialCbtiMember |  |  |  |  |  | 171 us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred / us-gaap_BusinessAcquisitionAxis = kai_CarmanahMember |  |
Additional payment, contingent consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 101 us-gaap_BusinessCombinationConsiderationTransferredOther1 / us-gaap_BusinessAcquisitionAxis = kai_NossGroupNossMember |  |  | 717 us-gaap_BusinessCombinationConsiderationTransferredOther1 / us-gaap_BusinessAcquisitionAxis = kai_CarmanahMember |
Escrow deposit |  |  |  |  |  |  |  |  |  |  |  |  | 3,550 us-gaap_EscrowDeposit / us-gaap_BusinessAcquisitionAxis = kai_CompanhiaBrasileiraDeTecnologiaIndustrialCbtiMember |  |  | 1,970 us-gaap_EscrowDeposit / us-gaap_BusinessAcquisitionAxis = kai_NossGroupNossMember |  |  | 6,705 us-gaap_EscrowDeposit / us-gaap_BusinessAcquisitionAxis = kai_CarmanahMember
Escrow deposit disbursements |  |  |  |  |  |  |  |  |  |  |  | $ 1,248 kai_EscrowDepositDisbursements / us-gaap_BusinessAcquisitionAxis = kai_CompanhiaBrasileiraDeTecnologiaIndustrialCbtiMember |  |  |  |  |  |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460 + Details
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- Definition Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 + Details
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- Definition This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to items of consideration transferred in connection with a business combination for which the initial accounting was incomplete. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1500-128463 + Details
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- Definition The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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