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

No definition available.

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- Definition

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

+ References

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

+ Details

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- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

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- Details

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- Details

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Derivative Instruments and Hedging Activities - Notional principal amounts (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Sep. 30, 2016
Derivative Instruments and Hedging Activities
Term of derivative contract			3 years
Unrealized gain (loss) on derivative	$ 1,800	$ (4,500)	$ 1,900	$ 9,500
Instruments designated as accounting hedges: \| Foreign currency forwards
Derivative Instruments and Hedging Activities
Notional principal outstanding derivative instruments	118,412		118,412		$ 158,664
Instruments not designated as accounting hedges: \| Foreign currency forwards
Derivative Instruments and Hedging Activities
Notional principal outstanding derivative instruments	122,151		122,151		115,070
Notional principal outstanding derivative instruments designed to manage exposure	$ 100,300		$ 100,300		$ 78,400