Long-Term Debt - Components of Long-Term Debt (Details) - USD ($) $ in Thousands	Feb. 29, 2020	Aug. 31, 2019
Debt Instrument [Line Items]
Long-term debt, gross	$ 557,250	$ 260,000
Convertible Notes unamortized interest discount	(80,839)	0
Debt issuance costs, net	(11,609)	(5,706)
Long-term debt	464,802	254,294
Less current maturities	13,668	8,892
Long-term debt, less current maturities	451,134	245,402
ABL Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross	0	0
Term Loan
Debt Instrument [Line Items]
Long-term debt, gross	257,250	260,000
Convertible Notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 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 discount.

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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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