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

Contractual rate at which a foreign currency can be purchased or sold.

+ References

No definition available.

+ Details

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a),(c),(d),(e)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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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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Derivatives - Foreign Currency Exchange Contracts (Details) - Not Designated as Hedging Instrument	3 Months Ended
	Mar. 31, 2018 USD ($) $ / R$ ¥ / $ $ / €	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) $ / R$ ¥ / $ $ / €
USD/Euro Foreign Exchange Forward, April 3, 2018 \| USD
Derivative [Line Items]
Notional value	$ 12,000,000
Forward rate \| $ / €	1.2247
Unrealized gain/(loss) recorded at balance sheet date	$ (77,000)
USD/Chinese Yuan Renminbi Foreign Exchange Forward, April 3, 2018 \| Chinese Yuan Renminbi
Derivative [Line Items]
Notional value	$ 25,000,000
Forward rate \| ¥ / $	6.3895
Unrealized gain/(loss) recorded at balance sheet date	$ (504,000)
USD/Brazilian Real Foreign Exchange Forward, March 29, 2018 \| USD
Derivative [Line Items]
Notional value	$ 2,000,000
Forward rate \| $ / R$	3.2755
Unrealized gain/(loss) recorded at balance sheet date	$ 18,000
USD/Euro Foreign Exchange Forward, January 5, 2018 \| USD
Derivative [Line Items]
Notional value			$ 17,000,000
Forward rate \| $ / €			1.1858
Unrealized gain/(loss) recorded at balance sheet date		$ (220,000)
USD/Chinese Yuan Renminbi Foreign Exchange Forward, January 5, 2018 \| Chinese Yuan Renminbi
Derivative [Line Items]
Notional value			$ 20,000,000
Forward rate \| ¥ / $			6.6481
Unrealized gain/(loss) recorded at balance sheet date		(410,000)
USD/Brazilian Real Foreign Exchange Forward, January 24, 2018 \| USD
Derivative [Line Items]
Notional value			$ 2,500,000.0
Forward rate \| $ / R$			3.2350
Unrealized gain/(loss) recorded at balance sheet date		$ 65,000