Derivative Financial Instruments - Fair value of Net Derivative Asset (Liability) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Foreign Currency Fair Value Hedge Derivative [Line Items]
Derivative Assets	$ 6,541	$ 0
Derivative Liabilities	(6,698)	(55)
Foreign exchange derivative liabilities	(157)	(55)
Level 1 [Member]
Foreign Currency Fair Value Hedge Derivative [Line Items]
Derivative Assets	0	0
Derivative Liabilities	0	0
Level 2 [Member]
Foreign Currency Fair Value Hedge Derivative [Line Items]
Derivative Assets	6,541	0
Derivative Liabilities	(6,698)	(55)
Level 3 [Member]
Foreign Currency Fair Value Hedge Derivative [Line Items]
Derivative Assets	0	0
Derivative Liabilities	$ 0	$ 0