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
Mar. 31, 2020
Mar. 31, 2019
Revenue $ 1,304 $ 3,012
North America [Member]    
Revenue 688 1,792
Asia Pacific [Member]    
Revenue 597 967
Europe And Middle East [Member]    
Revenue 5 246
Latin America [Member]    
Revenue 14
Other [Member]    
Revenue $ 7