Long-lived Assets by Geographic Region (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Property and equipment, net	$ 150,541	[1]	$ 156,282	[1]
Careers - China
Segment Reporting Information [Line Items]
Property and equipment, net	$ 10,571

[1] Total long-lived assets include property and equipment, net and at September 30, 2012, excludes $10,571 attributable to the Careers-China business whose assets are reported as business held for sale.