DISCONTINUED OPERATIONS DISCONTINUED OPERATIONS - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Income (loss) from discontinued operations, net of income taxes	$ 13,618	$ (835)
Revenue	16,215	13,992
Direct costs	6,061	3,990
Gross margin	10,154	10,002
Discontinued Operations
Disaggregation of Revenue [Line Items]
Revenue	108,463	89,413
Direct costs	69,800	56,983
Gross margin	38,663	32,430
Discontinued Operations | Contracting
Disaggregation of Revenue [Line Items]
Revenue	76,615	62,566
Direct costs	67,980	54,918
Gross margin	8,635	7,648
Discontinued Operations | Permanent Recruitment
Disaggregation of Revenue [Line Items]
Revenue	20,700	17,927
Direct costs	190	96
Gross margin	20,510	17,831
Discontinued Operations | Talent Management
Disaggregation of Revenue [Line Items]
Revenue	10,694	8,416
Direct costs	1,225	1,505
Gross margin	9,469	6,911
Discontinued Operations | Other Than Temporary Contracting, Permanent Recruitment and Talent Management [Member] [Member]
Disaggregation of Revenue [Line Items]
Revenue	454	504
Direct costs	405	464
Gross margin	49	40
Discontinued Operations
Disaggregation of Revenue [Line Items]
Income (loss) from discontinued operations, net of income taxes	$ 13,618	$ (835)