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Note 6 - Goodwill and Other Intangibles (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2024
Dec. 31, 2023
Goodwill, Impairment Loss $ 0   $ 0  
Customer Relationship, Core Technology and Know-how [Member]        
Amortization of Intangible Assets 400 $ 500 1,300 $ 1,600
Backlog [Member]        
Amortization of Intangible Assets $ 300 $ 0 $ 400 $ 100