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Fair Value - Additional Information (Detail) - USD ($)
$ in Thousands
Sep. 30, 2019
Jun. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Certain other investments accounted for at cost $ 800 $ 700
Borrowings under credit facility 110,000 110,000
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Borrowings under credit facility 110,000  
Israeli Severance Arrangements    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Carrying value of assets related to deposits $ 1,100 $ 1,200