Note 16 - Related Party Transactions (Details Textual) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Accounts Receivable, Related Parties	$ 173		$ 0
Accounts Payable, Related Parties	93	$ 0
Related Party Transaction, Expenses from Transactions with Related Party	62	70
China Pioneer [Member]
Revenue from Related Parties	173	41
China Pioneer [Member] \| Selling, General and Administrative Expenses [Member]
Related Party Costs	90	0
Director Bob Wu [Member] \| Consulting Fee Pursuant to Consulting Agreement [Member]
Related Party Transaction, Expenses from Transactions with Related Party	50
China Kington [Member] \| Broker Fee for the Exercise of the June 2019 Warrants [Member]
Related Party Transaction, Expenses from Transactions with Related Party	$ 12
China Kington [Member] \| Broker Fee for Issuance of Promissory Note [Member]
Related Party Transaction, Expenses from Transactions with Related Party		$ 20

Amount for accounts payable to related parties.

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Direct costs arising from transactions with related parties who are not affiliates or joint Ventures. These costs are categorized as cost of goods sold.

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