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Accrued Expenses - Narrative (Detail) - USD ($)
$ in Thousands
Feb. 02, 2020
Apr. 28, 2019
Jan. 27, 2019
Payables And Accruals [Abstract]      
Accrued expenses $ 7,975 $ 9,525 $ 9,740
Current accrued expenses 7,742 9,192 [1] $ 9,740
Long-term accrued expenses $ 233 $ 333 [1]  
[1] Derived from audited financial statements.