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Debt (Summary of Long-term Debt) (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Jun. 30, 2016
Debt Instrument [Line Items]    
Mortgage $ 2,911 $ 2,960
Long-term debt including current portion 120,172 118,789
Less current portion 197 197
Long-term debt, net 119,975 118,592
Convertible Senior Notes, net    
Debt Instrument [Line Items]    
Long-term debt including current portion $ 117,261 $ 115,829