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SEGMENT INFORMATION (Schedule of Net Sales and Service Fees by Product Category) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Oct. 31, 2016
Jul. 31, 2016
Apr. 30, 2016
Jan. 31, 2016
Oct. 31, 2015
Jul. 31, 2015
Apr. 30, 2015
Jan. 31, 2015
Oct. 31, 2016
Oct. 31, 2015
Oct. 31, 2014
Revenue from External Customer [Line Items]                      
Net Sales and Service Fees $ 66,354 $ 52,403 $ 52,029 $ 56,503 $ 65,693 $ 52,535 $ 50,183 $ 50,972 $ 227,289 $ 219,383 $ 222,303
Computerized Machine Tools [Member]                      
Revenue from External Customer [Line Items]                      
Net Sales and Service Fees [1]                 195,618 189,712 193,937
Computer Control Systems and Software [Member]                      
Revenue from External Customer [Line Items]                      
Net Sales and Service Fees [2]                 2,078 3,085 3,407
Service Parts [Member]                      
Revenue from External Customer [Line Items]                      
Net Sales and Service Fees                 21,908 19,375 17,391
Service Fees [Member]                      
Revenue from External Customer [Line Items]                      
Net Sales and Service Fees                 $ 7,685 $ 7,211 $ 7,568
[1] Amounts shown include sales of Milltronics and Takumi computerized machine tools to third parties since the respective dates of acquisitions.
[2] Amounts shown do not include computer control systems and software sold as an integrated component of computerized machine systems.