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Note 9 - Geographic Information and Major Customer Data - Revenues Based On Customer Location (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Revenues $ 26,172 $ 33,195 $ 54,907 $ 67,586
UNITED STATES        
Revenues 4,320 6,991 8,761 13,737
Europe and Middle East [Member]        
Revenues 2,762 2,772 5,955 3,874
Asia Pacific [Member]        
Revenues [1] 19,063 23,432 39,689 49,975
Other [Member]        
Revenues 27 0 502 0
CHINA        
Revenues $ 12,714 $ 18,601 $ 30,477 $ 41,572
[1] China