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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Face (par) amount of debt instrument at time of issuance.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
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Date the debt instrument was issued, in CCYY-MM-DD format.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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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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No definition available.

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The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

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No definition available.

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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
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-SubTopic 10
-Section 50
-Paragraph 4C
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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.

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

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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No definition available.

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Value of nonderivative instruments designated as hedging instruments in hedge transactions of net investments in foreign operations.

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No definition available.

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Derivative Instruments and Hedging Activities (Narrative) (Details) € in Thousands, ¥ in Thousands, $ in Thousands	3 Months Ended			12 Months Ended			21 Months Ended
	Sep. 30, 2016 USD ($)	Dec. 31, 2015	Sep. 30, 2013 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2016 USD ($)	Sep. 30, 2016 CNY (¥)	Sep. 30, 2016 EUR (€)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 CNY (¥)	Jun. 30, 2013 USD ($)
Net unrecognized gains 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
EUR Denominated Loan [Member]
Gain (loss) on foreign currency transaction designated as a hedge of a net investment in a foreign subsidiary				$ (47)
Intercompany Loan [Member]
Amount of Gain (Loss) Recognized in Accumulated OCI on Derivative	$ 73			$ 912	$ 572		$ 1,484
Value of Net Investment Hedging Instruments Used \| ¥								¥ 160,000			¥ 160,000
Derivatives in Cash Flow Hedging Relationships [Member]
Term of gain or loss recognition in interest expense on terminated derivatives recorded in OCI				7 years
Derivative, Notional Amount												$ 25,000
Interest Expense [Member] \| Derivatives in Cash Flow Hedging Relationships [Member]
Amount of Gain (Loss) Recognized in Accumulated OCI on Derivative			$ 507	$ 0	0	$ 0
Total Accumulated Other Comprehensive (Loss) Earnings [Member]
Unrecognized gains (loss)					$ 269					$ 290
2008 Note Purchase Agreement [Member]
Issuance Date				Oct. 01, 2008
2009 Note Purchase Agreement [Member]
Issuance Date				Apr. 01, 2009
2013 Note Purchase Agreement [Member]
Issuance Date				Oct. 01, 2013
Face Amount										$ 250,000
First Closing Notes [Member]
Issuance Date				Oct. 01, 2013
Second Closing Notes [Member]
Issuance Date		Nov. 15, 2013		Nov. 15, 2013
2016 Note Purchase Agreements [Member]
Issuance Date				Sep. 23, 2016
Face Amount \| €									€ 160,000
Series O Notes [Member]
Face Amount \| €									43,000
Series N Notes [Member]
Face Amount \| €									77,000
Series M Notes [Member]
Value of Net Investment Hedging Instruments Used \| €									40,000
Face Amount \| €									€ 40,000