Derivative Instruments Measured at Gross Fair Value as Reflected in Condensed Consolidated Balance Sheets (Detail) (Foreign exchange contract, USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Derivatives Fair Value [Line Items]
Derivative assets	$ 7,131		$ 4,158
Derivative liabilities	5,612		3,273
Designated as Hedge Instruments
Derivatives Fair Value [Line Items]
Derivative assets	3,614	[1]	2,992	[1]
Derivative liabilities	3,032	[2]	1,760	[2]
Not designated as Hedge Instruments
Derivatives Fair Value [Line Items]
Derivative assets	3,517	[1]	1,166	[1]
Derivative liabilities	$ 2,580	[2]	$ 1,513	[2]

[1] All derivative assets are recorded as prepaid and other current assets in the condensed consolidated balance sheets.

[2] All derivative liabilities are recorded as other accrued liabilities in the condensed consolidated balance sheets.