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Note 2 - Acquisitions (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Sep. 30, 2021
Goodwill, Ending Balance $ 261,064 $ 267,906  
Business Combination, Acquisition Related Costs 292   $ 217
Sensor Solutions [Member]      
Payments to Acquire Businesses, Net of Cash Acquired, Total 9,900    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total 2,800    
Goodwill, Ending Balance 6,000    
Sensor Solutions [Member] | Customer-Related Intangible Assets [Member]      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles $ 2,000    
Finite-Lived Intangible Asset, Useful Life (Year) 10 years    
Sensor Solutions [Member] | Trademarks [Member]      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets $ 800    
Standex Electronics [Member]      
Payments to Acquire Businesses, Gross   3,100  
Business Acquisition, Goodwill, Expected Tax Deductible Amount   $ 2,500