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Note 11 - Related Party Note Payable (Details Textual) - USD ($) $ in Thousands			12 Months Ended
	May 14, 2020	Feb. 27, 2019	Dec. 31, 2021	Dec. 31, 2020
Pioneer Hong Kong [Member] | Promissory Note [Member]
Debt Instrument, Face Amount		$ 1,000
Debt Instrument, Periodic Payment, Interest	$ 300	200
Repayments of Long-term Debt, Total	$ 1,000
Debt Issuance Costs, Net, Total		$ 20
Interest Expense, Total			$ 0	$ 75
China Kington [Member]
Brokering Fee, Percent		2.00%
Consulting Agreement, Term (Year)		1 year
Consulting Agreement, Amount		$ 100

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- Definition

Represents the brokering fee as a percentage.

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