New Accounting Pronouncements (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended					9 Months Ended
	Sep. 30, 2014		Mar. 31, 2014	Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
New Accounting Pronouncements [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment Realized upon Sale or Liquidation, before Tax	$ 0	[1]	$ 7,700	$ 0	[1]	$ 7,718	[1]	$ 0	[1]

[1] All amounts presented are net of tax.