Derivative Instruments (Foreign Currency Forward Contracts) (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Nov. 30, 2017
Derivative [Line Items]
Notional Value	$ 149,204	$ 119,654
Fair Value	(1,806)	(27)
Forward contracts to sell U.S. dollars
Derivative [Line Items]
Notional Value	149,204	119,192
Fair Value	(1,806)	(27)
Forward contracts to purchase U.S. dollars
Derivative [Line Items]
Notional Value	0	462
Fair Value	$ 0	$ 0

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611

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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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- Details

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