Derivative Instruments - Schedule of Gain (Loss) Recognized on Derivative Instruments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments [Line Items]
Cross-currency swap and warrants unrealized gain (loss) recorded in other comprehensive income (loss), net of taxes	$ (31)	$ 222	$ 72	$ (96)
Cross-currency swap and warrants [Member]
Derivative Instruments [Line Items]
Cross-currency swap and warrants unrealized gain (loss) recorded in other comprehensive income (loss), net of taxes	$ (31)	$ 222	$ 72	$ (96)