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Acquisitions (Detail) (USD $)
9 Months Ended
Jul. 31, 2014
Oct. 31, 2013
Business Acquisition [Line Items]    
Goodwill $ 71,823,000 $ 71,866,000
Cash paid for acquisition, net of cash and cash equivalents acquired 22,449,000  
Greenville
   
Business Acquisition [Line Items]    
Inventories 161,000  
Prepaid and other current assets 145,000  
Property, plant and equipment 4,695,000  
Intangible assets 290,000  
Deferred income tax liability (50,000)  
Net assets acquired 5,241,000  
Cash paid for acquisition, net of cash and cash equivalents acquired 5,161,000  
Gain recognized on bargain purchase 80,000  
Alumco
   
Business Acquisition [Line Items]    
Accounts receivable   3,638,000
Inventories   5,062,000
Prepaid and other current assets   140,000
Property, plant and equipment   4,682,000
Intangible assets   8,939,000
Accounts payable   (2,066,000)
Accrued liabilities   (993,000)
Current maturities of long-term debt   (14,000)
Long-term debt   (77,000)
Goodwill   2,785,000
Net assets acquired   22,096,000
Contingent consideration based on certain financial targets   500,000
Contingent consideration received based on working capital clause   400,000
Contingent consideration, at fair value   $ 300,000