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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Oct. 30, 2016
Apr. 30, 2017
Oct. 30, 2016
Apr. 30, 2017
May 01, 2016
Unusual or Infrequent Item, or Both [Line Items]          
Proceeds from insurance       $ 420 $ 0
Metal Components | Facility fire          
Unusual or Infrequent Item, or Both [Line Items]          
Insurance proceeds   $ 18,000 $ 10,000    
Maximum potential insurance reimbursement for the difference between actual cash value and replacement cost   4,700   4,700  
Cost of sales | Metal Components | Facility fire          
Unusual or Infrequent Item, or Both [Line Items]          
Insurance proceeds $ 8,800        
Prepaid and other assets | Metal Components | Facility fire          
Unusual or Infrequent Item, or Both [Line Items]          
Insurance settlements receivable   $ 8,000   $ 8,000  
Accounts payable and accrued liabilities | Metal Components | Facility fire          
Unusual or Infrequent Item, or Both [Line Items]          
Insurance proceeds $ 9,200