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Derivative Financial Instruments - Outstanding commodity and currency forward contracts not designated as hedging (Details) - Derivatives NOT designated as hedging instruments - Foreign currency exchange contracts	Mar. 31, 2017 USD ($)	Mar. 31, 2017 EUR (€)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 EUR (€)
European Euro
Derivative [Line Items]
Notional amount | €		€ 4,929,005		€ 10,502,111
United States Dollar
Derivative [Line Items]
Notional amount | $	$ 5,550,000		$ 15,318,000

X

- 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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Period Type:	instant

X

- 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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- Details

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- Details

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- Details

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- Details

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