Foreign Currency Derivatives - Derivative Instruments Measured at Gross Fair Value as Reflected in Condensed Consolidated Balance Sheets (Details) (Foreign exchange contract, USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 15, 2015	Dec. 31, 2014
Derivatives Fair Value [Line Items]
Derivative assets	$ 22,808			$ 14,342
Derivative liabilities			12,651	8,175
Designated as Hedge Instruments
Derivatives Fair Value [Line Items]
Derivative assets	11,012	[1]		5,501	[1]
Derivative liabilities	5,856	[2]		4,041	[2]
Not Designated as Hedging Instrument
Derivatives Fair Value [Line Items]
Derivative assets	11,796	[1]		8,841	[1]
Derivative liabilities	$ 6,795	[2]		$ 4,134	[2]

[1] All derivative assets are recorded in “Prepaid and other current assets” in the condensed consolidated balance sheets.

[2] All derivative liabilities are recorded in “Other accrued liabilities” in the condensed consolidated balance sheets.