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Debt (Summary of Long-term Debt) (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Jun. 30, 2016
Debt Instrument [Line Items]    
Mortgage $ 2,862 $ 2,960
Long-term debt including current portion 382,935 118,789
Less current portion 14,466 197
Long-term debt, net 368,469 118,592
Convertible Senior Notes, net    
Debt Instrument [Line Items]    
Long-term debt including current portion 118,712 115,829
Revolving Bank Loans    
Debt Instrument [Line Items]    
Long-term debt including current portion 115,000
Term Bank Loans    
Debt Instrument [Line Items]    
Long-term debt including current portion $ 146,361