DISCONTINUED OPERATIONS - Operating Results of Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations	$ 3,498	$ 4,578
Gain on sale of discontinued operations	94,293	0
Income tax expense	(25,499)	(753)
Gain on discontinued operations, net of taxes	72,292	3,825
Discontinued Operations, Disposed of by Sale | Workspace Management Software Solutions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	24,619	25,326
Income from discontinued operations	3,498	4,578
Gain on sale of discontinued operations	94,293	0
Income tax expense	(25,499)	(753)
Gain on discontinued operations, net of taxes	$ 72,292	$ 3,825