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Revenue from Contracts with Customers - Disaggregation of Revenue (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 29, 2023
Jan. 30, 2022
Jan. 29, 2023
Jan. 30, 2022
Disaggregation of Revenue [Line Items]        
Total Net Sales $ 52,523 $ 80,291 $ 173,508 $ 237,899
Transferred at Point in Time [Member] | Product [Member]        
Disaggregation of Revenue [Line Items]        
Total Net Sales 50,272 77,839 167,280 231,485
Transferred over Time [Member] | Services [Member]        
Disaggregation of Revenue [Line Items]        
Total Net Sales 2,251 2,452 6,228 6,414
Mattress Fabrics [Member]        
Disaggregation of Revenue [Line Items]        
Total Net Sales 24,697 38,439 80,299 122,380
Mattress Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]        
Disaggregation of Revenue [Line Items]        
Total Net Sales 24,697 38,439 80,299 122,380
Upholstery Fabrics [Member]        
Disaggregation of Revenue [Line Items]        
Total Net Sales 27,826 41,852 93,209 115,519
Upholstery Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]        
Disaggregation of Revenue [Line Items]        
Total Net Sales 25,575 39,400 86,981 109,105
Upholstery Fabrics [Member] | Transferred over Time [Member] | Services [Member]        
Disaggregation of Revenue [Line Items]        
Total Net Sales $ 2,251 $ 2,452 $ 6,228 $ 6,414