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Fair Value Measurements and Fair Value of Financial Instruments - Carrying Value and Fair Value of Debt Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017
Carrying Value [Member]
Long-term Debt Obligations:
Revolving credit facility	$ 202,205	$ 237,011
Capital lease obligations	3,843	4,101
Other borrowings	183	272
Debt obligations	206,231	241,384
Fair Value [Member]
Long-term Debt Obligations:
Revolving credit facility	202,205	237,011
Capital lease obligations	3,843	4,101
Other borrowings	183	272
Debt obligations	$ 206,231	$ 241,384

X

- Definition

Capital Lease Obligations, Fair Value Disclosure

+ References

No definition available.

+ Details

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X

- Definition

Other Borrowings, Fair Value Disclosure

+ References

No definition available.

+ Details

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Namespace Prefix:	kai_
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X

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611

+ Details

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- References

No definition available.

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X

- Definition

Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

+ References

No definition available.

+ Details

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- Details

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