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Derivatives (Foreign Exchange Contracts) (Details) € in Thousands, ₨ in Thousands, £ in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 EUR (€)	Sep. 30, 2016 GBP (£)	Sep. 30, 2016 INR (₨)
Derivative [Line Items]
Foreign currency transaction gain (loss)	$ 100	$ (100)	$ 100	$ (100)
Sells Indian rupee (INR)/Buys USD Forward
Derivative [Line Items]
Notional Amount	6,553		6,553				₨ 456,000
October 2016 Maturity | Sells euro (EUR)/Buys USD Forward
Derivative [Line Items]
Notional Amount	7,018		7,018		€ 6,300
October 2016 Maturity | Sells pound sterling (GBP)/Buys USD Forward
Derivative [Line Items]
Notional Amount	4,504		4,504			£ 3,400
January 2017 Maturity | Sells euro (EUR)/Buys USD Forward
Derivative [Line Items]
Notional Amount	7,095		7,095		€ 6,300
January 2017 Maturity | Sells pound sterling (GBP)/Buys USD Forward
Derivative [Line Items]
Notional Amount	$ 4,427		$ 4,427			£ 3,400

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

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- Definition

Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30700-110894

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30690-110894

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