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Fair Value Measurements and Derivative Instruments - Balance Sheet Hedging Instruments (Details) - Foreign currency debt - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Derivative Instruments |  |
Carrying Value of Non-derivative instrument Designated as hedging instrument | $ 345,352 | $ 311,225
Long Term Debt Current |  |
Derivative Instruments |  |
Carrying Value of Non-derivative instrument Designated as hedging instrument | 62,431 | 61,601
Long-term Debt |  |
Derivative Instruments |  |
Carrying Value of Non-derivative instrument Designated as hedging instrument | $ 282,921 | $ 249,624

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