Note 3 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|---|
|
Sep. 30, 2023
USD ($)
|
Jun. 30, 2023
USD ($)
|
Jun. 30, 2023
USD ($)
|
Sep. 30, 2023
USD ($)
|
Dec. 31, 2023
USD ($)
|
Dec. 31, 2022
USD ($)
|
|
| Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | $ (3,053) | $ (3,373) | $ (2,305) | $ (5,358) | $ (9,703) | $ (186,694) |
| Retained Earnings (Accumulated Deficit) | (446,249) | (442,887) | (442,887) | (446,249) | (454,179) | (440,049) |
| Cash and Cash Equivalents, at Carrying Value | 2,013 | $ 588 | $ 588 | 2,013 | 862 | 1,200 |
| Accounts Receivable, Allowance for Credit Loss | $ 150 | 0 | ||||
| Number of Reporting Units | 1 | |||||
| Advertising Expense | $ 1,230 | 2,120 | ||||
| Government Assistance, Amount | $ 1,232 | $ 1,232 | 1,232 | 0 | ||
| Financing Receivable, Allowance for Credit Loss | $ 0 | $ 0 | ||||
| X | ||||||||||
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of government assistance recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. No definition available.
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| X | ||||||||||
- Definition Amount of accumulated undistributed earnings (deficit). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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