Business Segment Information Business Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2017	Jul. 31, 2016	Oct. 31, 2016
Segment Reporting Information [Line Items]
Revenue, Net	$ 256,847	$ 248,832	$ 777,816	$ 784,151
Long-Lived Assets	311,184		311,184		$ 310,606
UNITED STATES \| Reportable Geographical Components [Member]
Segment Reporting Information [Line Items]
Revenue, Net	207,187	207,485	633,950	651,526
Long-Lived Assets	237,195		237,195		243,225
Europe [Member] \| Reportable Geographical Components [Member]
Segment Reporting Information [Line Items]
Revenue, Net	41,808	32,766	119,980	105,571
Foreign Currency Transaction Gain, before Tax	(143)	230	(175)	189
Long-Lived Assets	54,680		54,680		48,709
Rest of World [Member] \| Reportable Geographical Components [Member]
Segment Reporting Information [Line Items]
Revenue, Net	7,852	8,581	23,886	27,054
Foreign Currency Transaction Gain, before Tax	314	$ 245	(90)	$ 258
Long-Lived Assets	$ 19,309		$ 19,309		$ 18,672
Sales [Member] \| Non-US [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	19.30%	16.60%	18.50%	16.90%

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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