Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Acquisitions (Details Textual)

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Note 4 - Acquisitions (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 06, 2021
Dec. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Payments to Acquire Businesses, Net of Cash Acquired, Total     $ (0) $ 9,765
Acquisition of Asuragen, Inc. [Member]        
Payments to Acquire Businesses, Net of Cash Acquired, Total $ 216,000   215,587  
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High $ 105,000 $ 105,000 105,000  
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual   8,800 16,400  
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual   $ (400) $ (3,600)  
Acquisition of Asuragen, Inc. [Member] | Developed Technology Rights [Member]        
Finite-Lived Intangible Asset, Useful Life (Year) 14 years      
Acquisition of Asuragen, Inc. [Member] | Customer Relationships [Member]        
Finite-Lived Intangible Asset, Useful Life (Year) 16 years      
Acquisition of Asuragen, Inc. [Member] | Trade Names [Member]        
Finite-Lived Intangible Asset, Useful Life (Year) 5 years      
Acquisition of Asuragen, Inc. [Member] | Noncompete Agreements [Member]        
Finite-Lived Intangible Asset, Useful Life (Year) 3 years