Annual report pursuant to Section 13 and 15(d)

Share-based compensation and other benefit plans - Additional Information (Detail)

v2.4.0.8
Share-based compensation and other benefit plans - Additional Information (Detail) (USD $)
 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Deferred Compensation Arrangement with Individual [Line Items]        
Common stock outstanding awards 728,000 575,000 499,000 440,000
Weighted average fair value of options granted during the period $ 9.72 $ 14.14 $ 14.58  
Total intrinsic value of options exercised $ 405,000 $ 338,000 $ 3,100,000  
Total fair value of options vested 1,500,000 1,600,000 1,000,000  
Stock-based compensation cost 1,864,000 1,641,000 1,138,000  
Total unrecognized compensation cost related to non-vested stock options which will be expensed in fiscal 2014 through 2017 3,000,000      
Weighted average period over which the compensation cost is expected to be recognized 1 year 1 month 6 days      
Options for common stock granted 175,000 95,000 188,000  
Restricted Stock
        
Deferred Compensation Arrangement with Individual [Line Items]        
Restricted stock shares granted fair value per share $ 67.46      
Restricted stock shares issued 15,000      
Restricted shares vest in fiscal 2014 5,000      
Restricted shares vest in fiscal 2015 5,000      
Restricted shares vest in fiscal 2016 5,000      
UNITED STATES | Profit Sharing and Savings Plans
        
Deferred Compensation Arrangement with Individual [Line Items]        
Benefit plan contributions charged to operation 0 754,000 718,000  
R&D Europe and Tocris | Defined Contribution Pension Plan
        
Deferred Compensation Arrangement with Individual [Line Items]        
Benefit plan contributions charged to operation 603,000 499,000 240,000  
Equity Incentive Plan 2010
        
Deferred Compensation Arrangement with Individual [Line Items]        
Number of shares authorized for grant 3,000,000      
Number of shares available for grant 2,500,000      
Common stock outstanding awards 453,000      
Equity Incentive Plan 2010 | Maximum
        
Deferred Compensation Arrangement with Individual [Line Items]        
Maximum term of options granted under all Plans 10 years      
1998 Nonqualified Stock Option Plan
        
Deferred Compensation Arrangement with Individual [Line Items]        
Common stock outstanding awards 234,000      
1997 Incentive Stock Option Plan
        
Deferred Compensation Arrangement with Individual [Line Items]        
Common stock outstanding awards 43,000      
Stock Bonus Plans
        
Deferred Compensation Arrangement with Individual [Line Items]        
Benefit plan contributions charged to operation 0 715,000 690,000  
Performance Incentive Program | Executive Officer
        
Deferred Compensation Arrangement with Individual [Line Items]        
Bonuses under certain employment agreements with executive officers $ 334,000 $ 31,000 $ 39,000  
Options for common stock granted 132,852 22,932 3,364