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Note 4 - Summary of Significant Accounting Policies (Details Textual) - USD ($) |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Aug. 19, 2024 | Jan. 10, 2023 | Nov. 30, 2024 | Nov. 30, 2023 | Nov. 30, 2022
Goodwill, Impairment Loss |  |  | $ 0 | $ 0 |
Payments to Acquire Equity Method Investments |  |  | (0) | 520,000 |
Income (Loss) from Equity Method Investments |  |  | (42,000) | (603,000) |
Accounts Receivable, Allowance for Credit Loss, Current |  |  | 300,000 | 600,000 | $ 100,000
Tangible Asset Impairment Charges |  |  | $ 0 | 0 |
Standard Product Warranty, Term (Year) |  |  | 1 year |  |
Extended Product Warranty, Term (Year) |  |  | 3 years |  |
Contract with Customer, Liability, Current |  |  | $ 1,791,000 | 1,844,000 |
Advertising Expense |  |  | 12,400,000 | 4,600,000 |
Research and Development Expense |  |  | 600,000 | 600,000 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued |  |  | 0 | 0 |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent |  |  | 342,000 | (436,000) |
Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent |  |  | 65,000 | 0 |
Intercompany Loan [Member] |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent |  |  | 400,000 | (700,000) |
Customer Advances [Member] |  |  |  |  |
Contract with Customer, Liability, Current |  |  | 1,700,000 | 1,700,000 |
Warranty Obligations [Member] |  |  |  |  |
Contract with Customer, Liability, Current |  |  | $ 100,000 | 100,000 |
Order or Production Backlog [Member] |  |  |  |  |
Contract with Customer, Liability, Current |  |  |  | 100,000 |
Customer Lists [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 2 years |  |
Minimum [Member] | Patents [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 10 years |  |
Minimum [Member] | Computer and Software, Furniture and Fixtures, and Machinery and Equipment [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  | 3 years |  |
Minimum [Member] | Leasehold Improvements [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  | 3 years |  |
Maximum [Member] | Patents [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 17 years |  |
Maximum [Member] | Computer and Software, Furniture and Fixtures, and Machinery and Equipment [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  | 7 years |  |
Maximum [Member] | Leasehold Improvements [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  | 7 years |  |
Byrna LATAM [Member] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 51.00% | 51.00% |  |  |
Payments to Acquire Equity Method Investments |  | $ 500,000 |  |  |
Proceeds from Sale of Equity Method Investments | $ 1 |  |  |  |
Income (Loss) from Equity Method Investments |  |  | $ (100,000) | (600,000) |
Equity Method Investments |  |  | $ 0 | $ 0 |

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