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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- 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

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- Definition

Nominal energy measure used to calculate payments on a derivative instrument.

+ References

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- Definition

Nominal mass used to calculate payments on a derivative instrument.

+ References

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Derivative Financial Instruments - Schedule of Outstanding Commodity and Currency Forward Contracts (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) MMBTU T	Dec. 31, 2015 USD ($) MMBTU T	Dec. 31, 2016 JPY (¥)	Dec. 31, 2016 KRW (₩)	Dec. 31, 2016 SGD	Dec. 31, 2016 EUR (€)	Dec. 31, 2016 AUD	Dec. 31, 2015 JPY (¥)	Dec. 31, 2015 KRW (₩)	Dec. 31, 2015 SGD	Dec. 31, 2015 GBP (£)	Dec. 31, 2015 EUR (€)
Commodity contracts \| Designated as Hedging Instrument
Derivative [Line Items]
Commodity units hedged, energy \| MMBTU	26,807	175,617
Commodity units hedged, mass \| T	3,190	4,811
Foreign currency exchange contracts \| Designated as Hedging Instrument \| Japan, Yen
Derivative [Line Items]
Currency units hedged \| ¥			¥ 65,502,800					¥ 245,915,700
Foreign currency exchange contracts \| Designated as Hedging Instrument \| Singapore, Dollars
Derivative [Line Items]
Currency units hedged \| SGD					SGD 900,000					SGD 1,800,000
Foreign currency exchange contracts \| Designated as Hedging Instrument \| Australian Dollar
Derivative [Line Items]
Currency units hedged \| AUD							AUD 611,143
Foreign currency exchange contracts \| Designated as Hedging Instrument \| European Euro
Derivative [Line Items]
Currency units hedged \| €						€ 9,834,120
Foreign currency exchange contracts \| Designated as Hedging Instrument \| South Korean Won
Derivative [Line Items]
Currency units hedged \| ₩				₩ 218,408,100					₩ 1,533,257,930
Foreign currency exchange contracts \| Designated as Hedging Instrument \| United States Dollar
Derivative [Line Items]
Currency units hedged \| $	$ 2,311,697
Foreign currency exchange contracts \| Not Designated as Hedging Instrument \| Japan, Yen
Derivative [Line Items]
Currency units hedged \| ¥								¥ 70,518,463
Foreign currency exchange contracts \| Not Designated as Hedging Instrument \| Singapore, Dollars
Derivative [Line Items]
Currency units hedged \| SGD										SGD 500,000
Foreign currency exchange contracts \| Not Designated as Hedging Instrument \| European Euro
Derivative [Line Items]
Currency units hedged \| €						€ 10,502,111						€ 20,490,320
Foreign currency exchange contracts \| Not Designated as Hedging Instrument \| United States Dollar
Derivative [Line Items]
Currency units hedged \| $	$ 15,318,000	$ 17,321,106
Foreign currency exchange contracts \| Not Designated as Hedging Instrument \| United Kingdom, Pounds
Derivative [Line Items]
Currency units hedged \| £											£ 4,840,238