<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>196</ContextCount>
  <ElementCount>277</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>73</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000 - Document - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-document-and-entity-information</Role>
      <ShortName>Document And Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Current Period Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited-parentheticals</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>003 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-condensed-consolidated-statements-of-operations-and-comprehensive-income-unaudited</Role>
      <ShortName>Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>004 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-condensed-consolidated-statements-of-cash-flows-unaudited</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>005 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-condensed-consolidated-statements-of-changes-in-stockholders-equity-unaudited</Role>
      <ShortName>Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>006 - Disclosure - Note 1 - Nature of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-1-nature-of-operations</Role>
      <ShortName>Note 1 - Nature of Operations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>007 - Disclosure - Note 2 - Operations and Management Plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-2-operations-and-management-plans</Role>
      <ShortName>Note 2 - Operations and Management Plans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>008 - Disclosure - Note 3 - Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-3-basis-of-presentation</Role>
      <ShortName>Note 3 - Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>009 - Disclosure - Note 4 - Use of Estimates</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-4-use-of-estimates</Role>
      <ShortName>Note 4 - Use of Estimates</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>010 - Disclosure - Note 5 - Recent Accounting Guidance</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-5-recent-accounting-guidance</Role>
      <ShortName>Note 5 - Recent Accounting Guidance</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>011 - Disclosure - Note 6 - Goodwill</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-6-goodwill</Role>
      <ShortName>Note 6 - Goodwill</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>012 - Disclosure - Note 7 - Marketable Debt Securities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-7-marketable-debt-securities</Role>
      <ShortName>Note 7 - Marketable Debt Securities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>013 - Disclosure - Note 8 - Transactions With Byrna Latam</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-8-transactions-with-byrna-latam</Role>
      <ShortName>Note 8 - Transactions With Byrna Latam</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>014 - Disclosure - Note 9 - Advertising Costs</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-9-advertising-costs</Role>
      <ShortName>Note 9 - Advertising Costs</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>015 - Disclosure - Note 10 - Revenue, Deferred Revenue and Accounts Receivable</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-10-revenue-deferred-revenue-and-accounts-receivable</Role>
      <ShortName>Note 10 - Revenue, Deferred Revenue and Accounts Receivable</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>016 - Disclosure - Note 11 - Inventory</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-11-inventory</Role>
      <ShortName>Note 11 - Inventory</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>017 - Disclosure - Note 12 - Property and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-12-property-and-equipment</Role>
      <ShortName>Note 12 - Property and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>018 - Disclosure - Note 13 - Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-13-intangible-assets</Role>
      <ShortName>Note 13 - Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>019 - Disclosure - Note 14 - Accounts Payable and Accrued Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-14-accounts-payable-and-accrued-liabilities</Role>
      <ShortName>Note 14 - Accounts Payable and Accrued Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>020 - Disclosure - Note 15 - Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-15-stockholders-equity</Role>
      <ShortName>Note 15 - Stockholders' Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>021 - Disclosure - Note 16 - Stock-based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-16-stockbased-compensation</Role>
      <ShortName>Note 16 - Stock-based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>022 - Disclosure - Note 17 - Earnings Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-17-earnings-per-share</Role>
      <ShortName>Note 17 - Earnings Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>023 - Disclosure - Note 18 - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-18-related-party-transactions</Role>
      <ShortName>Note 18 - Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>024 - Disclosure - Note 19 - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-19-leases</Role>
      <ShortName>Note 19 - Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>025 - Disclosure - Note 20 - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-20-income-taxes</Role>
      <ShortName>Note 20 - Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>026 - Disclosure - Note 21 - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-21-commitments-and-contingencies</Role>
      <ShortName>Note 21 - Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>027 - Disclosure - Note 22 - Segment and Geographical Disclosures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-22-segment-and-geographical-disclosures</Role>
      <ShortName>Note 22 - Segment and Geographical Disclosures</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>028 - Disclosure - Note 23 - Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-23-financial-instruments</Role>
      <ShortName>Note 23 - Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>029 - Disclosure - Note 24 - Credit Facility</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-24-credit-facility</Role>
      <ShortName>Note 24 - Credit Facility</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>995476 - Disclosure - Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-significant-accounting-policies-policies</Role>
      <ShortName>Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-5-recent-accounting-guidance</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>995477 - Disclosure - Note 7 - Marketable Debt Securities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-7-marketable-debt-securities-tables</Role>
      <ShortName>Note 7 - Marketable Debt Securities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-7-marketable-debt-securities</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>995478 - Disclosure - Note 10 - Revenue, Deferred Revenue and Accounts Receivable (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-10-revenue-deferred-revenue-and-accounts-receivable-tables</Role>
      <ShortName>Note 10 - Revenue, Deferred Revenue and Accounts Receivable (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-10-revenue-deferred-revenue-and-accounts-receivable</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>995479 - Disclosure - Note 11 - Inventory (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-11-inventory-tables</Role>
      <ShortName>Note 11 - Inventory (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-11-inventory</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>995480 - Disclosure - Note 12 - Property and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-12-property-and-equipment-tables</Role>
      <ShortName>Note 12 - Property and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-12-property-and-equipment</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>995481 - Disclosure - Note 13 - Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-13-intangible-assets-tables</Role>
      <ShortName>Note 13 - Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-13-intangible-assets</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>995482 - Disclosure - Note 14 - Accounts Payable and Accrued Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-14-accounts-payable-and-accrued-liabilities-tables</Role>
      <ShortName>Note 14 - Accounts Payable and Accrued Liabilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-14-accounts-payable-and-accrued-liabilities</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>995483 - Disclosure - Note 15 - Stockholders' Equity (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-15-stockholders-equity-tables</Role>
      <ShortName>Note 15 - Stockholders' Equity (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-15-stockholders-equity</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>995484 - Disclosure - Note 16 - Stock-based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-16-stockbased-compensation-tables</Role>
      <ShortName>Note 16 - Stock-based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-16-stockbased-compensation</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>995485 - Disclosure - Note 17 - Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-17-earnings-per-share-tables</Role>
      <ShortName>Note 17 - Earnings Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-17-earnings-per-share</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>995486 - Disclosure - Note 19 - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-19-leases-tables</Role>
      <ShortName>Note 19 - Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-19-leases</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>995487 - Disclosure - Note 22 - Segment and Geographical Disclosures (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-22-segment-and-geographical-disclosures-tables</Role>
      <ShortName>Note 22 - Segment and Geographical Disclosures (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-22-segment-and-geographical-disclosures</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>995488 - Disclosure - Note 1 - Nature of Operations (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-1-nature-of-operations-details-textual</Role>
      <ShortName>Note 1 - Nature of Operations (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-1-nature-of-operations</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>995489 - Disclosure - Note 2 - Operations and Management Plans (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-2-operations-and-management-plans-details-textual</Role>
      <ShortName>Note 2 - Operations and Management Plans (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-2-operations-and-management-plans</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>995490 - Disclosure - Note 7 - Marketable Debt Securities (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-7-marketable-debt-securities-details-textual</Role>
      <ShortName>Note 7 - Marketable Debt Securities (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-7-marketable-debt-securities-tables</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>995491 - Disclosure - Note 7 - Marketable Securities - Schedule of Securities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-7-marketable-securities-schedule-of-securities-details</Role>
      <ShortName>Note 7 - Marketable Securities - Schedule of Securities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>995492 - Disclosure - Note 7 - Marketable Securities - Schedule of Fair Value Measurement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-7-marketable-securities-schedule-of-fair-value-measurement-details</Role>
      <ShortName>Note 7 - Marketable Securities - Schedule of Fair Value Measurement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>995493 - Disclosure - Note 8 - Transactions With Byrna Latam (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-8-transactions-with-byrna-latam-details-textual</Role>
      <ShortName>Note 8 - Transactions With Byrna Latam (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-8-transactions-with-byrna-latam</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>995494 - Disclosure - Note 9 - Advertising Costs (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-9-advertising-costs-details-textual</Role>
      <ShortName>Note 9 - Advertising Costs (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-9-advertising-costs</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>995495 - Disclosure - Note 10 - Revenue, Deferred Revenue and Accounts Receivable (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-10-revenue-deferred-revenue-and-accounts-receivable-details-textual</Role>
      <ShortName>Note 10 - Revenue, Deferred Revenue and Accounts Receivable (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-10-revenue-deferred-revenue-and-accounts-receivable-tables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>995496 - Disclosure - Note 10 - Revenue, Deferred Revenue and Accounts Receivable - Summary of Changes in Deferred Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-10-revenue-deferred-revenue-and-accounts-receivable-summary-of-changes-in-deferred-revenue-details</Role>
      <ShortName>Note 10 - Revenue, Deferred Revenue and Accounts Receivable - Summary of Changes in Deferred Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>995497 - Disclosure - Note 10 - Revenue, Deferred Revenue and Accounts Receivable - Revenue Disaggregation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-10-revenue-deferred-revenue-and-accounts-receivable-revenue-disaggregation-details</Role>
      <ShortName>Note 10 - Revenue, Deferred Revenue and Accounts Receivable - Revenue Disaggregation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>995498 - Disclosure - Note 11 - Inventory - Summary of Inventory (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-11-inventory-summary-of-inventory-details</Role>
      <ShortName>Note 11 - Inventory - Summary of Inventory (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>995499 - Disclosure - Note 12 - Property and Equipment (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-12-property-and-equipment-details-textual</Role>
      <ShortName>Note 12 - Property and Equipment (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-12-property-and-equipment-tables</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>995500 - Disclosure - Note 12 - Property and Equipment - Summary of Cost and Accumulated Depreciation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-12-property-and-equipment-summary-of-cost-and-accumulated-depreciation-details</Role>
      <ShortName>Note 12 - Property and Equipment - Summary of Cost and Accumulated Depreciation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>995501 - Disclosure - Note 13 - Intangible Assets (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-13-intangible-assets-details-textual</Role>
      <ShortName>Note 13 - Intangible Assets (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-13-intangible-assets-tables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>995502 - Disclosure - Note 13 - Intangible Assets - Components of Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-13-intangible-assets-components-of-intangible-assets-details</Role>
      <ShortName>Note 13 - Intangible Assets - Components of Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>995503 - Disclosure - Note 13 - Intangible Assets - Estimated Future Amortization Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-13-intangible-assets-estimated-future-amortization-expense-details</Role>
      <ShortName>Note 13 - Intangible Assets - Estimated Future Amortization Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>995504 - Disclosure - Note 14 - Accounts Payable and Accrued Liabilities - Summary of Accounts Payable and Accrued Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-14-accounts-payable-and-accrued-liabilities-summary-of-accounts-payable-and-accrued-liabilities-details</Role>
      <ShortName>Note 14 - Accounts Payable and Accrued Liabilities - Summary of Accounts Payable and Accrued Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>995505 - Disclosure - Note 15 - Stockholders' Equity (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-15-stockholders-equity-details-textual</Role>
      <ShortName>Note 15 - Stockholders' Equity (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-15-stockholders-equity-tables</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>995506 - Disclosure - Note 15 - Stockholders' Equity - Shares Purchased (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-15-stockholders-equity-shares-purchased-details</Role>
      <ShortName>Note 15 - Stockholders' Equity - Shares Purchased (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>995507 - Disclosure - Note 16 - Stock-based Compensation (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-16-stockbased-compensation-details-textual</Role>
      <ShortName>Note 16 - Stock-based Compensation (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-16-stockbased-compensation-tables</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>995508 - Disclosure - Note 16 - Stock-based Compensation - Summary of RSU Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-16-stockbased-compensation-summary-of-rsu-activity-details</Role>
      <ShortName>Note 16 - Stock-based Compensation - Summary of RSU Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>995509 - Disclosure - Note 16 - Stock-based Compensation - Summary of Stock Option Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-16-stockbased-compensation-summary-of-stock-option-activity-details</Role>
      <ShortName>Note 16 - Stock-based Compensation - Summary of Stock Option Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>995510 - Disclosure - Note 17 - Earnings Per Share - Allocation of Net Income (Loss) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-17-earnings-per-share-allocation-of-net-income-loss-details</Role>
      <ShortName>Note 17 - Earnings Per Share - Allocation of Net Income (Loss) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>995511 - Disclosure - Note 17 - Earnings Per Share - Weighted Average Number of Shares Outstanding Reconciliation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-17-earnings-per-share-weighted-average-number-of-shares-outstanding-reconciliation-details</Role>
      <ShortName>Note 17 - Earnings Per Share - Weighted Average Number of Shares Outstanding Reconciliation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>995512 - Disclosure - Note 17 - Earnings Per Share - Summary of Antidilutive Securities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-17-earnings-per-share-summary-of-antidilutive-securities-details</Role>
      <ShortName>Note 17 - Earnings Per Share - Summary of Antidilutive Securities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>995513 - Disclosure - Note 19 - Leases (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-19-leases-details-textual</Role>
      <ShortName>Note 19 - Leases (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-19-leases-tables</ParentRole>
      <Position>69</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>995514 - Disclosure - Note 19 - Leases - Elements of Lease Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-19-leases-elements-of-lease-expense-details</Role>
      <ShortName>Note 19 - Leases - Elements of Lease Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>995515 - Disclosure - Note 19 - Leases - Future Lease Payments Under Non-cancelable Operating Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-19-leases-future-lease-payments-under-noncancelable-operating-leases-details</Role>
      <ShortName>Note 19 - Leases - Future Lease Payments Under Non-cancelable Operating Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>995516 - Disclosure - Note 20 - Income Taxes (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-20-income-taxes-details-textual</Role>
      <ShortName>Note 20 - Income Taxes (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-20-income-taxes</ParentRole>
      <Position>72</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>995517 - Disclosure - Note 21 - Commitments and Contingencies (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-21-commitments-and-contingencies-details-textual</Role>
      <ShortName>Note 21 - Commitments and Contingencies (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-21-commitments-and-contingencies</ParentRole>
      <Position>73</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>995518 - Disclosure - Note 22 - Segment and Geographical Disclosures (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-22-segment-and-geographical-disclosures-details-textual</Role>
      <ShortName>Note 22 - Segment and Geographical Disclosures (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-22-segment-and-geographical-disclosures-tables</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>995519 - Disclosure - Note 22 - Segment and Geographical Disclosures - Schedule of Segment Reporting Information, by Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-22-segment-and-geographical-disclosures-schedule-of-segment-reporting-information-by-segment-details</Role>
      <ShortName>Note 22 - Segment and Geographical Disclosures - Schedule of Segment Reporting Information, by Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>995520 - Disclosure - Note 22 - Segment and Geographical Disclosures - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-22-segment-and-geographical-disclosures-schedule-of-revenue-from-external-customers-and-longlived-assets-by-geographical-areas-details</Role>
      <ShortName>Note 22 - Segment and Geographical Disclosures - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>995521 - Disclosure - Note 22 - Segment and Geographical Disclosures - Reconciliation of Revenue from Segments to Consolidated (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-22-segment-and-geographical-disclosures-reconciliation-of-revenue-from-segments-to-consolidated-details</Role>
      <ShortName>Note 22 - Segment and Geographical Disclosures - Reconciliation of Revenue from Segments to Consolidated (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>995522 - Disclosure - Note 23 - Financial Instruments (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-23-financial-instruments-details-textual</Role>
      <ShortName>Note 23 - Financial Instruments (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-23-financial-instruments</ParentRole>
      <Position>78</Position>
    </Report>
    <Report instance="byrn20260228_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>995523 - Disclosure - Note 24 - Credit Facility (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://byrna.com/20260228/role/statement-note-24-credit-facility-details-textual</Role>
      <ShortName>Note 24 - Credit Facility (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://byrna.com/20260228/role/statement-note-24-credit-facility</ParentRole>
      <Position>79</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>byrn-20260228.xsd</File>
    <File>byrn-20260228_cal.xml</File>
    <File>byrn-20260228_def.xml</File>
    <File>byrn-20260228_lab.xml</File>
    <File>byrn-20260228_pre.xml</File>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="byrn20260228_10q.htm">byrn20260228_10q.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="2">http://fasb.org/srt/2025</BaseTaxonomy>
    <BaseTaxonomy items="731">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="5">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
