Income Taxes (Detail) - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits, Excluding Interest and Penalties (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 17,552	$ 18,345
Additions based on tax positions related to the current year	4,237	4,301
Additions for tax positions of prior years	827	105
Reductions for tax positions of prior years	(1,973)	(3,427)
Reductions for expiration of statutes	(3,860)	(296)
Settlements	(1,575)	(1,372)
Change in foreign currency exchange rates	(720)	(104)
Ending balance	$ 14,488	$ 17,552