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Note 16 - Restricted Net Assets (Details Textual) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries | $ 15.2 | $ 13.2
Withholding Tax Rate Pursuant To EIT Law | 10.00% |
WFOE [Member] |  |
Minimum Percentage Of Annual After-tax Profit For General Reserve | 10.00% |
Minimum Required Reserve As Percent Of Registered Capital | 50.00% |
Domestic Enterprise [Member] |  |
Minimum Percentage Of Annual After-tax Profit For General Reserve | 10.00% |
Minimum Required Reserve As Percent Of Registered Capital | 50.00% |

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- Definition Minimum percentage of annual after-tax profit required to be appropriated as general reserve. + References No definition available. + Details
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- Definition Minimum aggregate compulsory appropriation of general reserve, measured by percentage of registered capital. + References No definition available. + Details
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- Definition Withholding tax rate pursuant to PRC Enterprise Income Tax law. + References No definition available. + Details
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- Definition Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)(3)(ii)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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