INVESTMENTS - Income (Loss) in Equity Interests, Net (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Schedule of Equity Method Investments [Line Items]
Income (loss) in equity interests, net	$ (41)	$ 292	$ 209	$ 72
Alma Career Oy
Schedule of Equity Method Investments [Line Items]
Income (loss) in equity interests, net	476	292	801	471
kununu US, LLC
Schedule of Equity Method Investments [Line Items]
Income (loss) in equity interests, net	(517)	0	(592)	0
CareerOne Pty Limited
Schedule of Equity Method Investments [Line Items]
Income (loss) in equity interests, net	$ 0	$ 0	$ 0	$ (399)