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3. Foreign Exchange Forward Contracts (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2016 USD ($)
Forward foreign exchange contract to sell foreign currency [Member] |
Derivatives, Fair Value [Line Items] |
Notional value | $ 16.1
Gain (Loss) on Foreign Currency Derivative Instruments not Designated as Hedging Instruments | 0.1
Forward foreign exchange contract to purchase foreign currency [Member] |
Derivatives, Fair Value [Line Items] |
Notional value | 337.2
Gain (Loss) on Foreign Currency Derivative Instruments not Designated as Hedging Instruments | $ (1.6)

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