Annual report pursuant to Section 13 and 15(d)

Description of business and summary of significant accounting policies - Additional Information (Detail)

 v2.3.0.11
Description of business and summary of significant accounting policies - Additional Information (Detail) (USD $)
12 Months Ended
Jun. 30, 2011
Year
Jun. 30, 2010
Jun. 30, 2009
Significant Accounting Policies [Line Items]      
Advertising expenses (including production and communication costs) $ 2,900,000 $ 3,000,000 $ 3,000,000
Available-for-sale investments, maturities start 3M    
Available-for-sale investments, maturities end 3Y    
Estimated useful life of equipment 5    
Estimated useful life of buildings, building improvements and leasehold improvements, minimum 5    
Estimated useful life of buildings, building improvements and leasehold improvements, maximum 40    
Goodwill 86,633,000 25,068,000 25,068,000
Proteins and Antibodies
     
Significant Accounting Policies [Line Items]      
Manufacturing costs for proteins and antibodies $ 13,700,000 $ 12,300,000 $ 11,900,000