    <SEC-DOCUMENT>0000886346-22-000145-index.html : 20221101
    <SEC-HEADER>0000886346-22-000145.hdr.sgml : 20221101
    <ACCEPTANCE-DATETIME>20221101170654
    ACCESSION NUMBER:		0000886346-22-000145
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		39
    CONFORMED PERIOD OF REPORT:	20221101
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20221101
    DATE AS OF CHANGE:		20221101

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			KADANT INC
    		CENTRAL INDEX KEY:			0000886346
    		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY (NO METALWORKING MACHINERY) [3550]
    		IRS NUMBER:				521762325
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-11406
    		FILM NUMBER:		221351349

    	BUSINESS ADDRESS:
    		STREET 1:		ONE TECHNOLOGY PARK DRIVE
    		CITY:			WESTFORD
    		STATE:			MA
    		ZIP:			01886
    		BUSINESS PHONE:		(978) 776-2000

    	MAIL ADDRESS:
    		STREET 1:		ONE TECHNOLOGY PARK DRIVE
    		CITY:			WESTFORD
    		STATE:			MA
    		ZIP:			01886

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	THERMO FIBERTEK INC
    		DATE OF NAME CHANGE:	19930328
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>kai-20221101.htm
    <DESCRIPTION>KAI FORM 8-K
    <TEXT>
    Document 1 - file: kai-20221101.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>kaiform8kex991q322.htm
    <DESCRIPTION>KAI FORM 8-K EXHIBIT 99.1 11-01-2022 EARNINGS RELEASE
    <TEXT>
    Document 2 - file: kaiform8kex991q322.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>kaiform8kex992q32022.htm
    <DESCRIPTION>KAI FORM 8-K EXHIBIT 99.2 11-01-2022 WEBCAST SLIDES
    <TEXT>
    Document 3 - file: kaiform8kex992q32022.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>kai-20221101.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 4 - file: kai-20221101.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>5
    <FILENAME>kai-20221101_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: kai-20221101_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>6
    <FILENAME>kai-20221101_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: kai-20221101_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>kadantlogo_jpga.jpg
    <DESCRIPTION>KAI LOGO
    <TEXT>
    Document 7 - file: kadantlogo_jpga.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>kaiform8kex992q32022001.jpg
    <TEXT>
    Document 8 - file: kaiform8kex992q32022001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>kaiform8kex992q32022002.jpg
    <TEXT>
    Document 9 - file: kaiform8kex992q32022002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>kaiform8kex992q32022003.jpg
    <TEXT>
    Document 10 - file: kaiform8kex992q32022003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>kaiform8kex992q32022004.jpg
    <TEXT>
    Document 11 - file: kaiform8kex992q32022004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>kaiform8kex992q32022005.jpg
    <TEXT>
    Document 12 - file: kaiform8kex992q32022005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>kaiform8kex992q32022006.jpg
    <TEXT>
    Document 13 - file: kaiform8kex992q32022006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>kaiform8kex992q32022007.jpg
    <TEXT>
    Document 14 - file: kaiform8kex992q32022007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>kaiform8kex992q32022008.jpg
    <TEXT>
    Document 15 - file: kaiform8kex992q32022008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>kaiform8kex992q32022009.jpg
    <TEXT>
    Document 16 - file: kaiform8kex992q32022009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>kaiform8kex992q32022010.jpg
    <TEXT>
    Document 17 - file: kaiform8kex992q32022010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>kaiform8kex992q32022011.jpg
    <TEXT>
    Document 18 - file: kaiform8kex992q32022011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>kaiform8kex992q32022012.jpg
    <TEXT>
    Document 19 - file: kaiform8kex992q32022012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>kaiform8kex992q32022013.jpg
    <TEXT>
    Document 20 - file: kaiform8kex992q32022013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>kaiform8kex992q32022014.jpg
    <TEXT>
    Document 21 - file: kaiform8kex992q32022014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>kaiform8kex992q32022015.jpg
    <TEXT>
    Document 22 - file: kaiform8kex992q32022015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>kaiform8kex992q32022016.jpg
    <TEXT>
    Document 23 - file: kaiform8kex992q32022016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>kaiform8kex992q32022017.jpg
    <TEXT>
    Document 24 - file: kaiform8kex992q32022017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>kaiform8kex992q32022018.jpg
    <TEXT>
    Document 25 - file: kaiform8kex992q32022018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>kaiform8kex992q32022019.jpg
    <TEXT>
    Document 26 - file: kaiform8kex992q32022019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>kaiform8kex992q32022020.jpg
    <TEXT>
    Document 27 - file: kaiform8kex992q32022020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>kaiform8kex992q32022021.jpg
    <TEXT>
    Document 28 - file: kaiform8kex992q32022021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>kaiform8kex992q32022022.jpg
    <TEXT>
    Document 29 - file: kaiform8kex992q32022022.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>kaiform8kex992q32022023.jpg
    <TEXT>
    Document 30 - file: kaiform8kex992q32022023.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>kaiform8kex992q32022024.jpg
    <TEXT>
    Document 31 - file: kaiform8kex992q32022024.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>32
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 32 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>33
    <FILENAME>kai-20221101_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 33 - file: kai-20221101_htm.html

    Document 33 - RAW XML: kai-20221101_htm.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>34
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 34 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>35
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 35 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>36
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 36 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>37
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 37 - file: FilingSummary.html

    Document 37 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>39
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 39 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>40
    <FILENAME>0000886346-22-000145-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 40 - file: 0000886346-22-000145-xbrl.zip

    </DOCUMENT>
    </SEC-DOCUMENT>