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Note 6 - Acquisitions (Details Textual) - USD ($)
$ in Millions
Aug. 18, 2021
May 12, 2021
Kore [Member]    
Asset Acquisition, Consideration Transferred, Total   $ 3.7
Asset Acquisition, Consideration Transferred, Transaction Cost   $ 0.2
Ballistipax [Member]    
Asset Acquisition, Consideration Transferred, Total $ 0.3