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Debt (Summary of Long-term Debt) (Detail) - USD ($)
$ in Thousands
Mar. 31, 2017
Jun. 30, 2016
Debt Instrument [Line Items]    
Mortgage $ 2,812 $ 2,960
Long-term debt including current portion 367,790 118,789
Less current portion 14,466 197
Long-term debt, net 353,324 118,592
Convertible Senior Notes, net    
Debt Instrument [Line Items]    
Long-term debt including current portion 120,184 115,829
Revolving Bank Loans    
Debt Instrument [Line Items]    
Long-term debt including current portion 102,000
Term Bank Loans    
Debt Instrument [Line Items]    
Long-term debt including current portion $ 142,794