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Note 15 - Stock-based Compensation (Details Textual) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 15, 2021 shares | Aug. 31, 2020 $ / shares | Nov. 30, 2021 USD ($) $ / shares shares | Aug. 31, 2020 $ / shares shares | Jul. 31, 2020 $ / shares shares | Dec. 31, 2018 shares | Nov. 30, 2021 USD ($) $ / shares shares | Nov. 30, 2020 USD ($) $ / shares shares | Aug. 31, 2021 $ / shares | Nov. 19, 2020 shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (in shares) |  |  |  |  |  |  | 100,002 | 12,000 |  |
Class of Warrant or Right, Exercised in Period (in shares) |  |  |  |  |  |  | 585,739 | 4,207,667 |  |
Share-based Payment Arrangement, Expense | $ |  |  |  |  |  |  | $ 3,200 | $ 1,300 |  |
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $ |  |  | $ 6,800 |  |  |  | $ 6,800 | $ 7,700 |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  |  |  |  |  | 1 year 9 months 25 days | 2 years 9 months 7 days |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted (in shares) |  |  |  |  |  |  | 174,493 | 1,573,500 |  |
Employees and Directors [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares) |  |  |  |  |  |  | 62,000 | 434,250 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  |  |  |  |  |  | 3 years |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (in shares) |  |  |  |  |  |  | 100,002 |  |  |
Shares Granted, Value, Share-based Payment Arrangement, Forfeited | $ |  |  |  |  |  |  | $ 200 |  |  |
Non-employee Contractors [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares) |  |  |  |  |  |  |  | 19,300 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  |  |  |  |  |  |  | 1 year |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares (in shares) |  |  |  |  |  |  |  | 11,000 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares, Ending Balance (in shares) |  |  |  |  |  |  |  | 8,300 |  |
Marketing Consultant [Member] | Incentive Stock Warrants [Member] |  |  |  |  |  |  |  |  |  |
Class of Warrant Or Right, Granted in Period (in shares) |  |  |  |  |  | 150,000 |  | 15,000 |  |
Number of Consultants |  |  |  |  |  | 2 |  |  |  |
Class of Warrant or Right, Exercised in Period (in shares) |  |  | 75,000 |  | 75,000 |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |  |  |  |  | $ 0.155 |  |  | $ 2.50 |  |
Stock Issued During Period, Shares, Warrants Exercised (in shares) |  |  | 68,005 |  | 68,005 |  |  |  |  |
Warrants and Rights Outstanding | $ |  |  |  |  |  |  |  | $ 10 |  |
Former Employee [Member] |  |  |  |  |  |  |  |  |  |
Severance Costs | $ |  |  |  |  |  |  | $ 900 |  |  |
Former Employee [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures and Expirations, Total (in shares) |  |  |  |  |  |  | 87,500 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  |  | 62,500 |  |  |  |  |  |  |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares) |  |  | 27,500 |  |  |  |  |  |  |
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation | $ |  |  | $ 400 |  |  |  |  |  |  |
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings (in shares) |  |  | 35,000 |  |  |  |  |  |  |
Restricted Stock, Value, Shares Issued Net of Tax Withholdings | $ |  |  | $ 500 |  |  |  |  |  |  |
The 2017 Stock Option Plan (2017 Plan) [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) |  |  | 1,899,327 |  |  |  | 1,899,327 |  |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) |  |  |  |  |  |  |  |  |  | 2,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares) | 1,400,000 |  |  |  |  |  |  |  |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted (in shares) |  |  |  |  |  |  | 174,493 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures and Expirations, Total (in shares) |  |  |  |  |  |  | 3,873 |  |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Employee [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted (in shares) |  |  |  |  |  |  |  | 673,500 |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  |  |  |  |  |  | 1 year |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  |  |  | 33.33% |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested or Expected to Vest, in Period (in shares) |  |  | 15,493 |  |  |  | 15,493 |  |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche One [Member] | Share-based Payment Arrangement, Employee [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  |  |  |  | 33.33% |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche Two [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  |  |  | 33.33% |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, 20 Day Volume Weighted Average Closing Price (in dollars per share) | $ / shares |  |  | $ 30.00 |  |  |  | $ 30.00 |  |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche Two [Member] | Share-based Payment Arrangement, Employee [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  |  |  |  | 33.33% |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, 20 Day Volume Weighted Average Closing Price (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 30.00 |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche Three [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  |  |  | 33.33% |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, 20 Day Volume Weighted Average Closing Price (in dollars per share) | $ / shares |  |  | $ 40.00 |  |  |  | $ 40.00 |  |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche Three [Member] | Share-based Payment Arrangement, Employee [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  |  |  |  | 1.00% |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, 20 Day Volume Weighted Average Closing Price (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 40.00 |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Restricted Stock Units (RSUs) [Member] | Double Trigger Vesting [Member] |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested or Expected to Vest, in Period (in shares) |  |  | 150,000 |  |  |  | 150,000 |  |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Chief Executive Officer [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted (in shares) |  |  |  | 900,000 |  |  |  |  |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Chief Executive Officer [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  | 33.33% |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, 20 Day Volume Weighted Average Closing Price (in dollars per share) | $ / shares |  | $ 20.00 |  | $ 20.00 |  |  |  |  |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Chief Executive Officer [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche Two [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  | 33.33% |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, 20 Day Volume Weighted Average Closing Price (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 30.00 |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Chief Executive Officer [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche Three [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  |  |  | 33.33% |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, 20 Day Volume Weighted Average Closing Price (in dollars per share) | $ / shares |  |  | $ 40.00 |  |  |  | $ 40.00 |  |  |

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of additional shares authorized for issuance under share-based payment arrangement. + References No definition available. + Details
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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. + References No definition available. + Details
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