DISCONTINUED OPERATIONS DISCONTINUED OPERATIONS - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 26,414	$ 17,015	$ 17,015	$ 42,601	$ 33,230	$ 33,230
Direct costs	14,755	6,214		21,546	12,275
Gross profit	11,659	10,801		21,055	20,955
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue					108,463
Direct costs					69,800
Gross profit					38,663
Permanent Recruitment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	11,716	11,696		21,283	23,385
Direct costs	683	1,464		1,411	3,482
Gross profit	$ 11,033	$ 10,232		$ 19,872	19,903
Permanent Recruitment | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue					20,700
Direct costs					190
Gross profit					20,510
Contracting | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue					76,615
Direct costs					67,980
Gross profit					8,635
Talent Management | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue					10,694
Direct costs					1,225
Gross profit					9,469
Other | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue					454
Direct costs					405
Gross profit					$ 49