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

X

- 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

X

- 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

X

- Details

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

X

- Details

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