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Note 5 - Goodwill and Other Intangible Assets (Details Textual)
$ in Thousands, € in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Jan. 22, 2021
USD ($)
Jan. 22, 2021
EUR (€)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Goodwill, Written Off         $ 630    
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Total         2,800   $ 900
Amortization of Intangible Assets     $ 1,500 $ 1,600 4,600 $ 4,600  
Acquired 3D Hubs [Member] | UNITED STATES              
Finite-Lived Intangible Assets Acquired $ 16,600 € 11.6          
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] | Manufacturing Facility in Japan [Member]              
Goodwill, Written Off         $ 600