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Segment Information - Narrative (Detail)
12 Months Ended
May 01, 2016
Customer
Segment
May 03, 2015
Customer
Apr. 27, 2014
Customer
Segment Reporting Information [Line Items]      
Number of business segments | Segment 2    
Currency Concentration Risk [Member] | Net sales [Member]      
Segment Reporting Information [Line Items]      
Concentration risk percentage 93.00% 92.00% 88.00%
Geographic Concentration Risk [Member] | Net sales [Member] | International [Member]      
Segment Reporting Information [Line Items]      
Concentration risk percentage 22.00% 22.00% 19.00%
Customer Concentration Risk [Member] | Net sales [Member] | upholstery fabrics [Member]      
Segment Reporting Information [Line Items]      
Concentration risk percentage 13.00% 13.00% 13.00%
Number of major customer 1 1 1
Customer Concentration Risk [Member] | Net sales [Member] | Mattress Fabrics [Member]      
Segment Reporting Information [Line Items]      
Concentration risk percentage 22.00% 20.00% 21.00%
Number of major customer 2 2 2
Customer Concentration Risk [Member] | Accounts Receivable [Member] | upholstery fabrics [Member]      
Segment Reporting Information [Line Items]      
Number of major customer 0 0  
Customer Concentration Risk [Member] | Accounts Receivable [Member] | upholstery fabrics [Member] | Minimum [Member]      
Segment Reporting Information [Line Items]      
Concentration risk percentage 10.00% 10.00%  
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Mattress Fabrics [Member]      
Segment Reporting Information [Line Items]      
Concentration risk percentage 16.00% 10.00%  
Number of major customer 1 1