Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	$ 262,065	$ 91,913
Swedish Kronor
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	48,555	59,198
Canadian Dollar
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	15,645	10,799
British Pound Sterling
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	33,862	10,203
Brazil, Brazil Real
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	2,747	6,440
Australian Dollar
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	1,653	2,342
Euro
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	156,352	281
Japanese Yen
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	3,251	2,124
Other
Derivative [Line Items]
Notional amounts of foreign currency forward contracts	$ 0	$ 526