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Note 10 - Revenues - Deferred Revenue (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Deferred revenue $ 3,835 $ 3,370
Service [Member]    
Deferred revenue 2,327 1,530
Customer Advances [Member]    
Deferred revenue $ 1,508 $ 1,840