Fair Value Position of Derivatives (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Notional Amount	$ 41,280	$ 48,022
Fair Value	(191)	246
Not Designated as Hedges under ASC 815 | Prepaid and other | Foreign currency exchange forwards
Derivative [Line Items]
Notional Amount	15,902	43,265
Maturity Dates	2015-01	2014-01
Fair Value	74	255
Not Designated as Hedges under ASC 815 | Accrued expenses and other current liabilities | Foreign currency exchange forwards
Derivative [Line Items]
Notional Amount	25,378	4,757
Maturity Dates	2015-01	2014-01
Fair Value	$ (265)	$ (9)