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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 |

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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 + Details
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