Debt (Schedule of Long-term Debt) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Debt Instrument [Line Items]
Long-term debt including current portion	$ 317,398	$ 353,666
Less current portion	14,482	14,466
Long-term debt	302,916	339,200
Convertible Senior Notes, net
Debt Instrument [Line Items]
Long-term debt including current portion	127,857	121,676
Revolving bank loans
Debt Instrument [Line Items]
Long-term debt including current portion	62,000	90,000
Term bank loans
Debt Instrument [Line Items]
Long-term debt including current portion	124,959	139,227
Mortgage
Debt Instrument [Line Items]
Long-term debt including current portion	$ 2,582	$ 2,763

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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