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Restructuring Costs and Other Expense (Income), Net - Additional Information (Details) (USD $)	12 Months Ended				24 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Jan. 03, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost incurred to date	$ 805,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1				$ 805,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1
Net restructuring and other expense (income)	805,000kai_RestructuringAndOtherCostsIncomeNet	103,000kai_RestructuringAndOtherCostsIncomeNet	307,000kai_RestructuringAndOtherCostsIncomeNet
Restructuring plan 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost incurred to date	370,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member				370,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member
Provision (reversal)	370,000us-gaap_RestructuringCharges / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member
Payments for Restructuring	267,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member
Restructuring plan 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost incurred to date	435,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member	1,843,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member			435,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member
Provision (reversal)	435,000us-gaap_RestructuringCharges / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member	1,843,000us-gaap_RestructuringCharges / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member
Payments for Restructuring	779,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member	1,215,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member
Restructuring plan 2011
Restructuring Cost and Reserve [Line Items]
Provision (reversal)			(67,000)us-gaap_RestructuringCharges / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member
Payments for Restructuring	36,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member	38,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member	256,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member
Employee severance | Restructuring plan 2014
Restructuring Cost and Reserve [Line Items]
Provision (reversal)	370,000us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member
Payments for Restructuring	267,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member
Employee severance | Restructuring plan 2013
Restructuring Cost and Reserve [Line Items]
Provision (reversal)	(11,000)us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member	1,666,000us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member
Payments for Restructuring	334,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member	1,038,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member
Employee severance | Restructuring plan 2011
Restructuring Cost and Reserve [Line Items]
Provision (reversal)			(67,000)us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member
Payments for Restructuring	36,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member	38,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member	256,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member
Employee severance | Restructuring plan 2008
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	31,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2008Member
Facility-related closing costs | Restructuring plan 2014
Restructuring Cost and Reserve [Line Items]
Provision (reversal)	0us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member
Payments for Restructuring	0us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member
Facility-related closing costs | Restructuring plan 2013
Restructuring Cost and Reserve [Line Items]
Provision (reversal)	446,000us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member	177,000us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member
Payments for Restructuring	445,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member	177,000us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member
Facility-related closing costs | Restructuring plan 2011
Restructuring Cost and Reserve [Line Items]
Provision (reversal)			0us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member
Payments for Restructuring	0us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member	0us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member	0us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member
Papermaking systems segment
Restructuring Cost and Reserve [Line Items]
Net restructuring and other expense (income)	800,000kai_RestructuringAndOtherCostsIncomeNet / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember	100,000kai_RestructuringAndOtherCostsIncomeNet / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember	300,000kai_RestructuringAndOtherCostsIncomeNet / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Papermaking systems segment | Restructuring plan 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost incurred to date	370,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember				370,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Papermaking systems segment | Restructuring plan 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost incurred to date	2,278,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember				2,278,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Provision (reversal)	435,000us-gaap_RestructuringCharges / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember	1,843,000us-gaap_RestructuringCharges / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Papermaking systems segment | Restructuring plan 2011
Restructuring Cost and Reserve [Line Items]
Provision (reversal)				408,000us-gaap_RestructuringCharges / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Papermaking systems segment | Facility-related closing costs | Restructuring plan 2013
Restructuring Cost and Reserve [Line Items]
Provision (reversal)	446,000us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember	177,000us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember			623,000us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember
Brazil | Papermaking systems segment | Employee severance | Restructuring plan 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost incurred to date	321,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_BR				321,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_BR
Number of positions eliminated related to restructuring	8us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_BR
Brazil | Papermaking systems segment | Employee severance | Restructuring plan 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost incurred to date		1,158,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_BR
Number of positions eliminated related to restructuring		22us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_BR
Provision (reversal)		1,158,000us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_BR
Sweden | Employee severance | Restructuring plan 2013
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated related to restructuring		25us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementGeographicalAxis = country_SE
Sweden | Papermaking systems segment | Employee severance | Restructuring plan 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost incurred to date	49,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_SE				49,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_SE
Number of positions eliminated related to restructuring	3us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2014Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_SE
Sweden | Papermaking systems segment | Employee severance | Restructuring plan 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost incurred to date	497,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_SE				497,000us-gaap_RestructuringAndRelatedCostCostIncurredToDate1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_SE
Provision (reversal)	11,000us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_SE	508,000us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2013Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_SE
China
Restructuring Cost and Reserve [Line Items]
Gain (loss) on sales of other real estate		1,740,000us-gaap_GainsLossesOnSalesOfOtherRealEstate / us-gaap_StatementGeographicalAxis = country_CN
Depreciation			$ 307,000us-gaap_Depreciation / us-gaap_StatementGeographicalAxis = country_CN
China | Papermaking systems segment | Employee severance | Restructuring plan 2011
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated related to restructuring				73us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = kai_RestructuringPlan2011Member / us-gaap_StatementBusinessSegmentsAxis = kai_PapermakingSystemsMember / us-gaap_StatementGeographicalAxis = country_CN

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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.

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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.

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of costs incurred to date for the specified restructuring cost.

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