DEBT AGREEMENTS (Narrative) (Details) $ in Thousands, € in Millions, ¥ in Millions, $ in Millions	9 Months Ended
	Jul. 31, 2021 USD ($)	Jul. 31, 2021 TWD ($)	Jul. 31, 2021 CNY (¥)	Jul. 31, 2021 EUR (€)	Mar. 31, 2019 TWD ($)	Mar. 31, 2019 CNY (¥)
Line of Credit Facility [Line Items]
Line of credit amount outstanding	$ 0
Line Of Credit Agreement 2018 [Member]
Line of Credit Facility [Line Items]
Line of credit, maximum borrowing capacity	40,000
Line of credit, maximum borrowing capacity in alternative currencies	$ 20,000
Variable interest rate	0.00%
Stated interest rate	1.25%	1.25%	1.25%	1.25%
Minimum working capital requirement	$ 125,000
Minimum tangible net worth requirement	$ 170,000
Line of credit, maturity date	Dec. 31, 2021
Allowable investments in alternative investments	$ 10,000
Borrowings available under credit facility	52,200
Line of Credit, covenant, minimum cash on hand before dividends are paid	10,000
Line of Credit, covenant, maximum annual share repurchase	10,000
Line of Credit, total amount of indebtedness threshold	25,000
Hurco BV [Member] | Line Of Credit Agreement 2018 [Member]
Line of Credit Facility [Line Items]
Line of credit, maximum borrowing capacity	$ 20,000
LIBOR | Line Of Credit Agreement 2018 [Member]
Line of Credit Facility [Line Items]
Variable interest rate	1.00%
Federal funds | Line Of Credit Agreement 2018 [Member]
Line of Credit Facility [Line Items]
Variable interest rate	0.50%
Base rate | Line Of Credit Agreement 2018 [Member]
Line of Credit Facility [Line Items]
Variable interest rate	1.25%
Letter of Credit [Member] | Line Of Credit Agreement 2018 [Member]
Line of Credit Facility [Line Items]
Line of credit, maximum borrowing capacity	$ 10,000
Revolving Credit Facility [Member] | Line Of Credit Agreement 2018 [Member]
Line of Credit Facility [Line Items]
Line of credit, maximum borrowing capacity	$ 40,000
Revolving Credit Facility [Member] | Germany [Member]
Line of Credit Facility [Line Items]
Line of credit, maximum borrowing capacity | €				€ 1.5
Taiwan credit facility [Member]
Line of Credit Facility [Line Items]
Line of credit, maximum borrowing capacity		$ 150			$ 150
China credit facility [Member]
Line of Credit Facility [Line Items]
Line of credit, maximum borrowing capacity | ¥			¥ 32.5			¥ 32.5