Derivative Instruments (Details 2) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Derivative Instruments
Asset Derivatives	$ 802	$ 2,155
Liability Derivatives	726	861
Derivatives designated as hedging instruments \| Foreign exchange contracts \| Other current assets
Derivative Instruments
Asset Derivatives	763	1,665
Derivatives designated as hedging instruments \| Foreign exchange contracts \| Other assets
Derivative Instruments
Asset Derivatives	1	182
Derivatives designated as hedging instruments \| Foreign exchange contracts \| Accounts payable and accrued liabilities
Derivative Instruments
Liability Derivatives	19
Derivatives designated as hedging instruments \| Foreign exchange contracts \| Accrued pension and other liabilities
Derivative Instruments
Liability Derivatives	20
Derivatives designated as hedging instruments \| Natural gas contracts \| Accounts payable and accrued liabilities
Derivative Instruments
Liability Derivatives	434	427
Derivatives designated as hedging instruments \| Natural gas contracts \| Accrued pension and other liabilities
Derivative Instruments
Liability Derivatives	196	372
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Other current assets
Derivative Instruments
Asset Derivatives	38	308
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Accounts payable and accrued liabilities
Derivative Instruments
Liability Derivatives	$ 57	$ 62

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

+ References

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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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