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 of unamortized debt discount (premium) and debt issuance 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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Long Term Debt - Schedule of Long-term Debt (Detail) - USD ($) $ in Thousands	Dec. 30, 2017	Jul. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Long-term debt	$ 224,433		$ 264,000
Fees, costs and original issue discount	(11,460)		(16,102)
Long-term debt	212,973		247,873
Less current portion of long-term debt	(294)
Long-term debt, less current portion	212,679		247,873
Term Notes Payable [Member]
Debt Instrument [Line Items]
Long-term debt	224,000
Term Notes Payable [Member] \| Term Loan Payable with 0.675 [Member]
Debt Instrument [Line Items]
Long-term debt	223,975		$ 263,975
Financing Arrangement [Member]
Debt Instrument [Line Items]
Long-term debt	$ 458	$ 590