Redeemable Noncontrolling Interests (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reconciliation of Redeemable Noncontrolling Interest [Roll Forward]
Balance, beginning of period	$ 19,650	$ 0	$ 21,662	$ 0
Acquisition of subsidiary at fair value		21,904		21,904
Net loss attributable to noncontrolling interest	(60)	(14)	(333)	(14)
Currency translation adjustment	172	223	(1,567)	223
Ending balance	$ 19,762	$ 22,113	$ 19,762	$ 22,113

As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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