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Fair Value Measurements - Schedule of Company's Long-Term Debt Including the Current Portion Not Reflected in Financial Statements at Fair Value (Detail) - USD ($)
$ in Thousands
Oct. 27, 2018
Jan. 31, 2018
Fair Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-Term Debt and related Current Maturities $ 19,961 $ 24,873
Fair Value [Member] | Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-Term Debt and related Current Maturities 19,961 24,873
Carrying Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-Term Debt and related Current Maturities $ 19,360 $ 23,372