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Fair Value - Additional Information (Detail) - USD ($)
 3 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Jun. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Transfer amount of assets or liabilities of level one $ 0 $ 0  
Transfer amount of assets or liabilities of level two 0 0  
Transfer amount of assets or liabilities of level three 0 $ 0  
Validity Sensors, Inc [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Additional consideration 102,200,000    
Pacinian [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Additional consideration paid to former stockholders based on sales of products, due $ 10,000,000    
Prepaid Expenses and Other Current Assets [Member] | Auction Rate Securities [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Current Portion of Investments     $ 600,000