Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Summary of Significant Accounting Policies - Revenue From Unaffiliated Customers by Geographic Area (Details)

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Note 2 - Summary of Significant Accounting Policies - Revenue From Unaffiliated Customers by Geographic Area (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Revenue $ 1,654 $ 704 $ 3,104 $ 2,008
North America [Member]        
Revenue 994 116 1,919 804
Asia Pacific [Member]        
Revenue 658 588 1,177 1,185
Europe And Middle East [Member]        
Revenue 2 0 8 5
Latin America [Member]        
Revenue $ 0 $ 0 $ 0 $ 14