DEBT (Long-term debt) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017
Total Debt:
Long-term Debt, Gross	$ 299,250	$ 300,000	$ 135,000
Deferred Debt Issuance Costs	(6,671)	(6,927)	0
Total Amount Outstanding	292,579	293,073	135,000
Less Current Portion:
Term B Loan	(3,000)	(3,000)	0
Noncurrent Portion	289,579	290,073	135,000
Revolver [Member]
Total Debt:
Long-term Debt, Gross	0	0	135,000
Term B Loan [Member]
Total Debt:
Long-term Debt, Gross	$ 299,250	$ 300,000	$ 0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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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.

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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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