Annual report pursuant to Section 13 and 15(d)

Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail)

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Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $)
 12 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2009
Cash paid, net of cash acquired $ 131,766,000 $ 0 $ 0
Boston Biochem
      
Current assets 1,738,000    
Intangible assets 4,300,000    
Goodwill 1,500,000    
Equipment 484,000    
Total assets acquired 8,022,000    
Current liabilities 134,000    
Deferred income taxes 0    
Net assets acquired 7,888,000    
Cash paid, net of cash acquired 7,888,000    
Tocris
      
Current assets 33,837,000    
Intangible assets 48,425,000    
Goodwill 61,365,000    
Equipment 1,233,000    
Total assets acquired 144,860,000    
Current liabilities 1,800,000    
Deferred income taxes 19,182,000    
Net assets acquired 123,878,000    
Cash paid, net of cash acquired $ 123,878,000