Note 11 - Segment Information (Tables)
 12 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
 
 
Year Ended June 30,
 
 
 
2017
 
 
2016
 
 
2015
 
External sales
                        
Biotechnology
   $
364,504
     $
317,340
     $
308,437
  
Protein Platforms
    
91,464
      
77,324
      
66,249
  
Diagnostics
    
107,139
      
104,484
      
77,866
  
Intersegment
    
(104
)
    
(125
)
    
(306
)
Consolidated net sales
   $
563,003
     $
499,023
     $
452,246
  
                         
Operating Income
                        
Biotechnology
   $
175,163
     $
168,613
     $
165,226
  
Protein Platforms
    
9,648
      
3,592
      
4,469
  
Diagnostics
    
28,575
      
30,412
      
23,981
  
Segment operating income
    
213,386
      
202,617
      
193,676
  
Costs recognized upon sale of acquired inventory
    
(3,037
)
    
(5,431
)
    
(6,952
)
Amortization of intangibles
    
(44,393
)
    
(29,395
)
    
(26,169
)
Stock based compensation
    
(14,631
)
    
(9,430
)
    
(5,957
)
Acquisition related expenses
    
(25,789
)
    
(2,761
)
    
(4,519
)
Corporate general, selling and administrative expenses
    
(4,952
)
    
(5,007
)
    
(3,056
)
Consolidated operating income
   $
120,584
     $
150,593
     $
147,023
  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
 
 
Year Ended June 30,
 
 
 
2017
 
 
2016
 
 
2015
 
External sales
                        
United States
   $
313,195
     $
275,859
     $
245,217
  
EMEA, excluding U.K.
    
125,126
      
103,060
      
104,178
  
U.K.
    
28,401
      
28,307
      
32,309
  
APAC, excluding Greater China
    
41,463
      
38,137
      
24,015
  
Greater China
    
39,078
      
36,199
      
34,933
  
Rest of world
    
15,740
      
17,461
      
11,594
  
Total external sales
   $
563,003
     $
499,023
     $
452,246
  
                         
Long-lived assets
                        
United States and Canada
   $
119,859
     $
116,830
     $
117,224
  
Europe
    
14,100
      
14,423
      
11,239
  
China
    
1,165
      
1,109
      
1,286
  
Total long-lived assets
  $
135,124
     $
132,362
     $
129,749