Rate of interest on loan receivable.

No definition available.

Name:	byrn_LoansReceivableFixedInterestRate
Namespace Prefix:	byrn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of royalty receivable that is included in the accounts receivable.

+ References

No definition available.

+ Details

Name:	byrn_RoyaltyReceivable
Namespace Prefix:	byrn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of interest income from financing receivable before allowance for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph a
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph b
-Subparagraph (1)
-Publisher SEC

+ Details

Name:	us-gaap_InterestIncomeFinancingReceivableBeforeAllowanceForCreditLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7)(e))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

+ Details

Name:	us-gaap_LoansAndLeasesReceivableRelatedParties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Ancillary revenue earned during the period from the consideration paid to the entity for the use of its rights and property by another party. Examples include licensing the use of copyrighted materials and leasing the extraction of natural resources.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

Name:	us-gaap_RoyaltyIncomeNonoperating
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=byrn_ByrnaLatamMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 8 - Transactions With Byrna Latam (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Feb. 28, 2026	Feb. 28, 2025	Mar. 01, 2026	Nov. 30, 2025	Aug. 19, 2024	Jan. 31, 2023
Royalty Income, Nonoperating	$ 0.2
Royalty Receivable	1.4			$ 1.1
Byrna LATAM [Member]
Loans and Leases Receivable, Related Parties						$ 1.6
Loans, Receivable, Fixed Interest Rate.					5.00%
Interest Income, Financing Receivable, before Allowance for Credit Loss	0.1	$ 0.1
Byrna LATAM [Member] \| Subsequent Event [Member]
Loans and Leases Receivable, Related Parties			$ 0.6
Loans, Receivable, Fixed Interest Rate.			5.00%
Byrna LATAM [Member] \| Prepaid Expenses and Other Current Assets [Member]
Loans and Leases Receivable, Related Parties	$ 1.0
Byrna LATAM [Member] \| Other Assets [Member]
Loans and Leases Receivable, Related Parties				$ 1.1