Schedule of Changes in Intangible Assets, Net of Accumulated Amortization (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-lived Intangible Assets [Roll Forward]
Net balance at January 1	$ 38,648	$ 47,119
Amortization expense	(3,708)	(4,181)
Impairment losses	0	(4,272)	0
Currency translation	89	(18)
Net balance at December 31	$ 35,029	$ 38,648	$ 47,119