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Note 15 - Convertible Notes (Details Textual) - Senior Unsecured Convertible Notes [Member] $ / shares in Units, $ in Thousands | 1 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 USD ($) shares | May 20, 2022 USD ($) $ / shares | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($)
Proceeds from Convertible Debt |  | $ 10,000 |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 8.00% |  |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares |  | $ 3.33 |  |
Conversion Share to Common Stock, Ratio |  | 1 |  |
Four Affiliated Individuals [Member] |  |  |  |
Convertible Debt, Total | $ 9,000 |  | $ 9,000 |
Affiliated Individual [Member] |  |  |  |
Convertible Debt, Total | $ 1,000 |  | 1,000 |
Four Board Members [Member] |  |  |  |
Proceeds from Related Party Debt |  | $ 9,000 | 9,000 | $ 0
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares | 1,965,841 |  |  |
Non-affiliated Party [Member] |  |  |  |
Proceeds from Convertible Debt |  |  | $ 1,000 | $ 0
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares | 231,697 |  |  |

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- Definition Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 2: 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(22)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 + Details
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