DISCONTINUED OPERATIONS DISCONTINUED OPERATIONS - Income Statement Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations	$ (47)	$ (366)	$ 13,560	$ 756
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	0	102,210	108,463	290,733
Gross profit	0	36,075	38,663	106,124
Salaries and related	0	27,142	29,032	79,094
Other selling, general and administrative	0	7,938	8,355	22,255
Depreciation and amortization	0	618	680	1,812
Business reorganization	0	493	50	782
Operating income (loss)	0	(116)	546	2,181
Interest income (expense), net	0	(107)	(88)	(310)
Other non-operating income (loss)	0	(102)	216	(440)
Income (Loss) from discontinued operations before taxes and gain (loss) on sale	0	(325)	674	1,431
Gain (loss) from sale of discontinued operations	(47)	0	13,985	0
Income (loss) from discontinued operations before income taxes	(47)	(325)	14,659	1,431
Provision (benefit) for income taxes	0	41	1,099	675
Income (loss) from discontinued operations	$ (47)	$ (366)	$ 13,560	$ 756

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Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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