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Note 2 - Significant Transactions (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 16, 2023
Nov. 17, 2022
Dec. 31, 2023
Dec. 31, 2023
GKE Acquisition [Member]        
Payments to Acquire Businesses, Gross $ 88,789      
Business Combination, Consideration Transferred, Working Capital Adjustment 1,000      
Business Combination, Consideration Transferred, Liabilities Incurred 9,500   $ 9,500  
Proceeds from Lines of Credit $ 71,000      
Business Combination, Acquisition Related Costs     770 $ 1,275
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual     $ 3,837  
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual       $ 565
GKE Acquisition [Member] | GKE GmbH and SAL GmbH [Member]        
Business Acquisition, Percentage of Voting Interests Acquired 100.00%      
GKE Acquisition [Member] | Beijing GKE Science & Technology Co. Ltd. [Member]        
Business Acquisition, Percentage of Voting Interests Acquired 100.00%      
Belyntic Acquisition [Member]        
Payments to Acquire Businesses, Gross   $ 4,950    
Business Combination, Consideration Transferred, Total   6,450    
Business Combination, Contingent Consideration, Liability   $ 1,500