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Note 10 - Segment Information - Assets (Details) - USD ($)
Jun. 30, 2022
Dec. 31, 2021
Assets $ 100,217,000 $ 89,016,000
Americas [Member]    
Assets 80,386,000 64,960,000
Asia Pacific [Member]    
Assets 7,214 10,699
EMEA [Member]    
Assets $ 12,617,000 $ 13,357,000