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Income Taxes - Additional Information (Detail) (USD $)
3 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Jun. 30, 2013
Income Tax Disclosure [Abstract]      
Provision for income taxes $ 12,680,000 $ 2,494,000  
Effective tax rate 26.60% 29.20%  
Gross unrecognized tax benefits 8,400,000   8,200,000
Gross unrecognized tax benefits increased during the year 146,000    
Interest and penalties accrued related to unrecognized tax benefits 918,000    
Increase in interest and penalties accrued related to unrecognized tax benefits 5,000    
Minimum amount of tax refunds subject to mandatory review $ 2,000,000    
Extension period of federal research credit 2 years