Derivative Instruments, Hedging Activities and Fair Value (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Designated as hedging instrument
Derivative contracts
Asset Derivatives	$ 917	$ 17,057
Liability Derivatives	$ 31	0
Designated as hedging instrument | Minimum
Derivative contracts
Period over which gains and losses are reclassified to earnings	10 years
Designated as hedging instrument | Maximum
Derivative contracts
Period over which gains and losses are reclassified to earnings	15 years
Designated as hedging instrument | Foreign currency forward exchange contracts | Other current assets
Derivative contracts
Asset Derivatives	$ 92	1,640
Designated as hedging instrument | Foreign currency forward exchange contracts | Other current liabilities
Derivative contracts
Liability Derivatives	31	0
Designated as hedging instrument | Cross currency interest rate swaps | Other assets
Derivative contracts
Asset Derivatives	825	15,417
Designated as hedging instrument | Cross currency interest rate swaps | Noncurrent liabilities
Derivative contracts
Liability Derivatives	0	0
Derivatives Not Designated as Hedging Instruments | Foreign currency forward exchange contracts | Other current assets
Derivative contracts
Asset Derivatives	8,982	4,188
Derivatives Not Designated as Hedging Instruments | Foreign currency forward exchange contracts | Other current liabilities
Derivative contracts
Liability Derivatives	$ 4,108	$ 1,738