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Note 4 - Fair Value Measurements (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Sep. 30, 2021
Mar. 31, 2022
Payment for Contingent Consideration Liability, Financing Activities $ 1,167   $ 1,167  
Business Combination, Contingent Consideration, Liability, Total   $ 1,167    
GS Engineering [Member]        
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High 12,800      
Renco Electronics [Member]        
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High       $ 3,500
Payment for Contingent Consideration Liability, Financing Activities $ 1,200 $ 1,000 $ 1,200  
Business Combination, Contingent Consideration, Liability, Total       $ 3,400