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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, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Revenue from External Customer [Line Items]
Net Sales and Service Fees		$ 59,989	$ 58,501	$ 70,674	$ 74,213	$ 83,051	$ 78,752	$ 70,424	$ 68,444	$ 263,377	$ 300,671	$ 243,667
Computerized Machine Tools [Member]
Revenue from External Customer [Line Items]
Net Sales and Service Fees										223,735	261,710	209,311
Computer Control Systems and Software [Member]
Revenue from External Customer [Line Items]
Net Sales and Service Fees	[1]									2,818	2,870	2,324
Service Parts [Member]
Revenue from External Customer [Line Items]
Net Sales and Service Fees										27,854	27,501	24,255
Service Fees [Member]
Revenue from External Customer [Line Items]
Net Sales and Service Fees										$ 8,970	$ 8,590	$ 7,777
[1] Amounts shown do not include computer control systems and software sold as an integrated component of computerized machine systems.

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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-Section S99
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