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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, 2021	Jul. 31, 2021	Apr. 30, 2021	Jan. 31, 2021	Oct. 31, 2020	Jul. 31, 2020	Apr. 30, 2020	Jan. 31, 2020	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Revenue from External Customer [Line Items]
Net Sales and Service Fees	$ 68,982	$ 54,178	$ 57,920	$ 54,115	$ 44,459	$ 45,382	$ 37,126	$ 43,660	$ 235,195	$ 170,627	$ 263,377
Computerized Machine Tools
Revenue from External Customer [Line Items]
Net Sales and Service Fees									198,602	139,577	223,735
Computer Control Systems and Software
Revenue from External Customer [Line Items]
Net Sales and Service Fees									2,528	1,699	2,818
Service Parts
Revenue from External Customer [Line Items]
Net Sales and Service Fees									26,425	22,484	27,854
Service Fees
Revenue from External Customer [Line Items]
Net Sales and Service Fees									$ 7,640	$ 6,867	$ 8,970

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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