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Fair Value - Schedule of Company's Long-Term Debt Including the Current Portion Not Reflected in Financial Statements at Fair Value (Detail)
$ in Thousands
Jul. 29, 2017
USD ($)
Fair Value [Member]  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Long-Term debt and related current maturities $ 9,953
Fair Value [Member] | Level 3 [Member]  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Long-Term debt and related current maturities 9,953
Carrying Value [Member]  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Long-Term debt and related current maturities $ 8,924