Debt (Summary of long-term debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Debt Instrument [Line Items]
Long-term debt including current portion	$ 317,121	$ 317,398
Less current portion	183,772	14,482
Long-term debt, net	133,349	302,916
Convertible Senior Notes, net
Debt Instrument [Line Items]
Long-term debt including current portion	131,080	127,857
Revolving Bank Loans
Debt Instrument [Line Items]
Long-term debt including current portion	62,000	62,000
Term Bank Loans
Debt Instrument [Line Items]
Long-term debt including current portion	121,574	124,959
Mortgage
Debt Instrument [Line Items]
Long-term debt including current portion	$ 2,467	$ 2,582

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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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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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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