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, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Revenue $ 704 $ 1,052 $ 2,008 $ 4,064
North America [Member]        
Revenue 116 663 804 2,455
Asia Pacific [Member]        
Revenue 588 343 1,185 1,310
Europe And Middle East [Member]        
Revenue 43 5 289
Latin America [Member]        
Revenue $ 3 $ 14 $ 10