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Derivative Instruments and Hedging Activities (Narrative) (Details) ¥ in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2016 CNY (¥)	Mar. 31, 2016 USD ($)	Sep. 30, 2015 USD ($)
Net unrecognized losses on terminated derivative instruments expected to be reclassified to earnings			$ 72
Term of gain or loss recognition in interest expense on terminated derivatives recorded in OCI			12 months
Unrealized gain (loss) on foreign currency transaction designated as a hedge of a net investment in a foreign subsidiary	$ (345)	$ 0	$ 517	$ 0
Intercompany Loan [Member]
Unrealized gain (loss) on foreign currency transaction designated as a hedge of a net investment in a foreign subsidiary			517
Value of Net Investment Hedging Instruments Used | ¥					¥ 160,000
Interest Expense [Member] | Derivatives in Cash Flow Hedging Relationships [Member]
Amount of Gain/Loss Recognized in Accumulated OCI on Derivative	$ 0	$ 0	$ 0	$ 0
Total Accumulated Other Comprehensive (Loss) Earnings [Member]
Unrecognized gains (loss)						$ 326	$ 269

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- Definition

Estimated period for the anticipated transfer of gain (loss), net, from accumulated other comprehensive income into earnings, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

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Current period adjustment in other comprehensive income reflecting gains or losses on foreign currency transactions that are designated as, and are effective as, hedges of a net investment in a foreign entity, net of tax effect.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

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The remaining amount of the realized gain or loss upon termination or settlement of derivative instruments which are held on the balance sheet and are being amortized into expense over the life of the associated hedged item.

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