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Note 11 - Related Party Transactions (Details Textual) - USD ($) $ in Thousands |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jan. 12, 2022 | Nov. 04, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Prepaid Expense, Current, Total |  |  | $ 3,671 |  | $ 3,671 |  | $ 5,598
Mr. McAfee [Member] |  |  |  |  |  |  |
Accrued Liabilities, Current, Total |  |  | 0 |  | 0 |  | 300
Stock Issued During Period, Shares, Issued for Services (in shares) | 180,000 |  |  |  |  |  |
Various Board Members [Member] |  |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  |  | 100 | $ 100 | 300 | $ 200 |
Employment Agreements and Expense Reimbursements [Member] | Mr. McAfee [Member] |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  |  |  | 400 |  |
Prepayments [Member] | Mr. McAfee [Member] |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  |  |  | 200 |  |
Prepaid Expense, Current, Total |  |  | $ 100 |  | 100 |  |
Guarantee Fee [Member] | Mr. McAfee [Member] |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction |  | $ 400 |  |  |  |  |
One-time Guarantee Fee [Member] | Mr. McAfee [Member] |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | $ 2,000 |  |  |  |  |  |
Board Compensation Fees [Member] | Various Board Members [Member] |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  |  |  | $ 300 |  | $ 200

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- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6387103&loc=d3e6435-108320 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 05 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126905020&loc=d3e5879-108316 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(7)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of transactions with related party during the financial reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 + Details
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- Definition Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders. + References No definition available. + Details
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