DISCONTINUED OPERATIONS DISCONTINUED OPERATIONS - Income Statement Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) income from discontinued operations	$ 0	$ (11)	$ (131)	$ 13,607
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
(Loss) gain from sale of discontinued operations	0	(11)	(131)	14,032
(Loss) income from discontinued operations before income taxes	0	(11)	(131)	14,706
Provision for income taxes	0	0	0	1,099
(Loss) income from discontinued operations	$ 0	$ (11)	$ (131)	$ 13,607