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Note 4 - Use of Estimates	6 Months Ended
Jun. 30, 2022
Notes to Financial Statements
Use of Estimates Disclosure [Text Block]	4. Use of Estimates In preparing financial statements in conformity with US GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as revenues and expenses during the reporting period. Actual results could differ from those estimates. Such estimated items include the allowance for bad debts, reserve for inventory obsolescence, accrued distribution fees, outdated material returns, possible impairment of marketable securities, and the allocation of overhead.

Note 4 - Use of Estimates

6 Months Ended

Jun. 30, 2022

Use of Estimates Disclosure [Text Block]

4. Use of Estimates

In preparing financial statements in conformity with US GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as revenues and expenses during the reporting period. Actual results could differ from those estimates. Such estimated items include the allowance for bad debts, reserve for inventory obsolescence, accrued distribution fees, outdated material returns, possible impairment of marketable securities, and the allocation of overhead.