Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Measurements [Abstract]

Fair Value, by Balance Sheet Grouping [Table Text Block]

The following table details financial assets measured and recorded at fair value on a recurring basis:

		As of December 31, 2016
(in thousands)	Balance Sheet Classification	Level 1		Level 2			Level 3		Total
Assets
Foreign currency exchange contracts	Other current assets	$	—	$	75,307		$	—	$	75,307
Liabilities
Foreign currency exchange contracts	Other current liabilities	$	—	(63,772		)	$	—	$	(63,772	)

		As of December 31, 2015
(in thousands)	Balance Sheet Classification	Level 1		Level 2			Level 3		Total
Assets
Foreign currency exchange contracts	Other current assets	$	—	$	37,034		$	—	$	37,034
Liabilities
Foreign currency exchange contracts	Other current liabilities	$	—	$	(25,891	)	$	—	$	(25,891	)