For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Business Segment Information (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
Segment Reporting Information [Line Items]
Revenues	$ 258,959	$ 263,445	$ 273,370	$ 258,933	$ 300,055	$ 294,883	$ 297,340	$ 247,666	$ 1,054,707	$ 1,139,944	$ 1,041,986
Long-Lived Assets	363,446				358,491				363,446	358,491	309,775
Reportable Geographical Components [Member] \| UNITED STATES
Segment Reporting Information [Line Items]
Revenues									739,640	831,782	839,013
Long-Lived Assets	249,743				234,690				249,743	234,690	235,663
Reportable Geographical Components [Member] \| Europe
Segment Reporting Information [Line Items]
Revenues									255,667	266,679	169,398
Long-Lived Assets	81,532				95,763				81,532	95,763	53,569
Reportable Geographical Components [Member] \| CHINA
Segment Reporting Information [Line Items]
Revenues									17,257	14,756	8,532
Long-Lived Assets	13,001				127				13,001	127	128
Reportable Geographical Components [Member] \| Rest of World
Segment Reporting Information [Line Items]
Revenues									42,143	26,727	25,043
Long-Lived Assets	$ 19,170				$ 27,911				$ 19,170	$ 27,911	$ 20,415
Sales [Member] \| Rest of World
Segment Reporting Information [Line Items]
Concentration Risk, Percentage									29.90%	27.00%	19.50%