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Note 2 - Acquisitions (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Payments to Acquire Businesses, Net of Cash Acquired, Total       $ (0) $ 27,398
Business Combination, Acquisition Related Costs $ 925 $ 570   1,142 596
Renco Electronics [Member]          
Payments to Acquire Businesses, Net of Cash Acquired, Total     $ 27,400    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total 10,400   10,400 10,400  
Business Acquisition, Goodwill, Expected Tax Deductible Amount     14,000    
Business Combination, Acquisition Related Costs $ 900 $ 600   $ 1,100 $ 600
Renco Electronics [Member] | Customer Relationships [Member]          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total     $ 6,800    
Finite-Lived Intangible Asset, Useful Life (Year)     12 years    
Renco Electronics [Member] | Indefinite Trademarks [Member]          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total     $ 3,600