INCOME TAXES (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Contingency [Line Items]
Income tax benefit	$ (29,114)	$ 914	$ (28,943)	$ 1,636
Effective income tax (in percent)	70.80%	(11.60%)	52.90%	(15.40%)
Saba Software, Inc.
Income Tax Contingency [Line Items]
Income tax benefit	$ (26,700)
Increase in uncertain tax positions			$ 5,500