DISCONTINUED OPERATIONS - Income Statement Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations	$ 18	$ (47)	$ (113)	$ 13,560
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	0	0	0	108,463
Gross profit	0	0	0	38,663
Salaries and related	0	0	0	29,032
Other selling, general and administrative	0	0	0	8,355
Depreciation and amortization	0	0	0	680
Business reorganization	0	0	0	50
Operating income	0	0	0	546
Interest expense, net	0	0	0	(88)
Other non-operating income	0	0	0	216
Income from discontinued operations before taxes and gain on sale	0	0	0	674
Gain (loss) gain from sale of discontinued operations	18	(47)	(113)	13,985
Income (loss) from discontinued operations before income taxes	18	(47)	(113)	14,659
Provision for income taxes	0	0	0	1,099
Income (loss) from discontinued operations	$ 18	$ (47)	$ (113)	$ 13,560