Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Acquisitions (Details Textual)

v3.19.3.a.u2
Note 4 - Acquisitions (Details Textual) - USD ($)
$ in Thousands
6 Months Ended
Jun. 04, 2019
Dec. 31, 2019
Dec. 31, 2018
Payments to Acquire Businesses, Net of Cash Acquired, Total   $ (0) $ 272,287
B-MoGen [Member]      
Payments to Acquire Businesses, Net of Cash Acquired, Total $ 17,448    
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High 38,000 $ 38,000  
Business Combination, Step Acquisition, Equity Interest in Acquiree, Before Remeasurement to Fair Value 1,400    
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain $ 3,700    
B-MoGen [Member] | Developed Technology Rights [Member]      
Finite-Lived Intangible Asset, Useful Life 14 years