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Debt (Summary of Long-term Debt) (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Jun. 30, 2015
Debt Instrument [Line Items]    
Mortgage $ 3,058 $ 3,157
Long-term debt including current portion 116,082 110,157
Less current portion 197 10,197
Long-term debt, net 115,885 $ 99,960
Convertible Senior Notes, net    
Debt Instrument [Line Items]    
Long-term debt including current portion $ 113,024
Revolving Bank Loans    
Debt Instrument [Line Items]    
Long-term debt including current portion $ 45,000
Term Bank Loans    
Debt Instrument [Line Items]    
Long-term debt including current portion $ 62,000