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Note 1 - Organization and Nature of Business (Details Textual) $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($)
Investments and Cash, Total	$ 121,100
Bank Debt [Member]
Long-Term Debt, Total	$ 0
Geographic Concentration Risk [Member] | Product Production [Member] | North America [Member]
Concentration Risk, Percentage	75.00%

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