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Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Details Textual) | 3 Months Ended
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Jun. 30, 2023 USD ($) shares
Restricted Stock [Member] |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares | 15,133
UNITED STATES |
Cash, Uninsured Amount | $ 33,000
HONG KONG |
Cash, Uninsured Amount | 2,200,000
CHINA |
Restricted Cash | $ 3,800,000

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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