Debt - Summary of long-term debt (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Long-term debt including current maturities	$ 247,041	$ 250,000
Unamortized debt issuance costs and debt discount	(1,673)	(1,859)
Long-term debt after debt issuance costs	245,368	248,141
Less: current maturities	(9,458)	(6,250)
Long-term debt	235,910	241,891
Term A Loan due June 2022
Debt Instrument [Line Items]
Term A Loan due June 2022	246,875	250,000
Capitalized lease obligations
Debt Instrument [Line Items]
Capitalized lease obligations	$ 166	$ 0

Amount of long-term debt and capital lease obligations including current maturities less debt issuance costs.

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

+ References

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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Amount of long-term debt and capital lease obligations including current maturities.

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