XML 41 R30.htm IDEA: XBRL DOCUMENT v3.8.0.1
Fair Value - Additional Information (Detail) - USD ($)
$ in Thousands
Mar. 31, 2018
Jun. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Certain other investments accounted for at cost $ 7,700 $ 7,700
Borrowings under credit facility 150,000  
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Borrowings under credit facility 150,000  
Israeli Severance Arrangements [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Carrying value of assets related to deposits $ 1,500 $ 1,500