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Exit and Disposal Activity - Summary of Activity in Restructuring Accrual (Detail) - USD ($)
$ in Thousands
3 Months Ended
Aug. 04, 2019
Jul. 29, 2018
Restructuring Cost and Reserve [Line Items]    
Beginning balance [1] $ 124  
Ending balance 42 $ 445
Upholstery Fabrics [Member] | Employee Termination Benefits [Member]    
Restructuring Cost and Reserve [Line Items]    
Beginning balance 124  
Accrual established in fiscal 2019   451
Payments (47) (6)
Adjustments (35)  
Ending balance $ 42 $ 445
[1] Derived from audited financial statements.