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Financial Instruments and Fair Value Measurements (Schedule of Derivative Instruments in Statement of Financial Position, Fair Value) (Details) lb in Thousands, $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2014 USD ($) lb | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($)
Forward Currency Contracts [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Notional amounts |  | $ 3,523 | [1] | $ 1,694 |  |
Forward Currency Contracts [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Notional amounts |  | $ 26,266 | [1] | 13,685 |  |
Copper Commodity [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Fixed price commodity contracts (in pounds) | lb | [1] | 317 |  |  |  |
Interest Rate Swap [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Notional amounts |  |  |  |  |  | $ 45,000
Other Assets [Member] | Forward Currency Contracts [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Cash flow hedges , other derivatives |  | $ 479 |  | 400 | [1] |
Other Liabilities [Member] | Forward Currency Contracts [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Fair value of other derivatives |  | (13) |  | (8) |  |
Other Liabilities [Member] | Forward Currency Contracts [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Cash flow hedges , other derivatives |  | (478) |  | $ (428) |  |
Other Liabilities [Member] | Copper Commodity [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Fair value of other derivatives |  | $ (69) |  |  |  |
[1] | Notional amounts represent the gross contract / notional amount of the derivatives outstanding. The fixed price commodity contract notional amounts are in pounds.

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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 Net fair value of all derivative instruments designated as cash flow hedging instruments, which is ordinarily reflected within other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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