Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Acquisitions (Details Textual)

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Note 3 - Acquisitions (Details Textual) - USD ($)
$ in Thousands
7 Months Ended 9 Months Ended
Feb. 01, 2018
Jan. 02, 2018
Sep. 05, 2017
Mar. 31, 2018
Mar. 31, 2018
Mar. 31, 2017
Payments to Acquire Businesses, Net of Cash Acquired, Total         $ 65,066 $ 253,941
Trevigen Inc. [Member]            
Payments to Acquire Businesses, Net of Cash Acquired, Total     $ 10,634 $ 10,644    
Business Acquisition, Goodwill, Expected Tax Deductible Amount     $ 0      
Goodwill, Purchase Accounting Adjustments       $ 1,396    
Trevigen Inc. [Member] | Developed Technology Rights [Member]            
Finite-Lived Intangible Asset, Useful Life     13 years      
Trevigen Inc. [Member] | Customer Relationships [Member]            
Finite-Lived Intangible Asset, Useful Life     11 years      
Trevigen Inc. [Member] | Trade Names [Member]            
Finite-Lived Intangible Asset, Useful Life     1 year 182 days      
Atlanta Biologicals [Member]            
Payments to Acquire Businesses, Net of Cash Acquired, Total   $ 51,286        
Business Acquisition, Goodwill, Expected Tax Deductible Amount   0        
Business Combination, Consideration Transferred, Total   $ 51,300        
Atlanta Biologicals [Member] | Developed Technology Rights [Member]            
Finite-Lived Intangible Asset, Useful Life   12 years        
Atlanta Biologicals [Member] | Customer Relationships [Member]            
Finite-Lived Intangible Asset, Useful Life   10 years        
Atlanta Biologicals [Member] | Trade Names [Member]            
Finite-Lived Intangible Asset, Useful Life   5 years        
Eurocell Diagnostics, SAS [Member]            
Payments to Acquire Businesses, Net of Cash Acquired, Total $ 3,136          
Business Acquisition, Goodwill, Expected Tax Deductible Amount 0          
Business Combination, Consideration Transferred, Total 4,500          
Payments to Acquire Businesses, Gross 3,100          
Business Combination, Consideration Transferred, Liabilities Incurred $ 1,396          
Eurocell Diagnostics, SAS [Member] | Customer Relationships [Member]            
Finite-Lived Intangible Asset, Useful Life 7 years