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Note 19 - Related Party Transactions (Details Textual) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 17, 2020 | Sep. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021
Accounts Receivable, Related Parties |  |  | $ 200 | $ 100
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |  |  | 19,000 |
Share-Based Payment Arrangement, Expense |  |  |  | 933
Share-Based Payment Arrangement, Option [Member] |  |  |  |
Share-Based Payment Arrangement, Expense |  |  | $ 200 | 700
Share-Based Payment Arrangement, Nonemployee [Member] |  |  |  |
Share-Based Payment Arrangement, Expense |  |  | 240 |
Share-Based Payment Arrangement, Nonemployee [Member] | Eric Wu [Member] |  |  |  |
Share-Based Payment Arrangement, Expense |  |  | $ 0 | $ 152
Share-Based Payment Arrangement, Nonemployee [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |
Share-Based Payment Arrangement, Expense |  | $ 0 |  |
Partner and Senior Vice President of China Kington [Member] | Share-Based Payment Arrangement, Nonemployee [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | 300,000 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Accounting for Subsequent Stock Split, Gross (in shares) | 8,572 |  |  |
Partner and Senior Vice President of China Kington [Member] | Share-Based Payment Arrangement, Nonemployee [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) | 1 year |  |  |

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- Definition Gross number of share options (or share units) granted during the period, accounting for subsequent stock split. + References No definition available. + Details
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- Definition For an unclassified balance sheet, amount of receivables arising from transactions with related parties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: 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(3)(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)(1)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 4: 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)(3)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 5: 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 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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