Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Derivative, Notional Amount	$ 175,628	$ 91,913
Swedish kronor
Derivative, Notional Amount	89,433	59,198
Canadian dollar
Derivative, Notional Amount	52,277	281
Canada, Dollars
Derivative, Notional Amount	12,978	10,799
Brazil, Brazil Real
Derivative, Notional Amount	7,484	10,203
Australian dollar
Derivative, Notional Amount	7,478	6,440
Japan, Yen
Derivative, Notional Amount	4,967	2,342
British pound sterling
Derivative, Notional Amount	1,011	2,124
Other
Derivative, Notional Amount	$ 0	$ 526