SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) segments	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segments	3
Revenues	$ 52,190	$ 58,286
Depreciation	2,308	2,598
Amortization of intangible assets	561	2,466
Operating income (loss)	4,295	2,642
Interest expense	(790)	(872)
Other expense	(16)	(15)
Income before income taxes	3,489	1,755
Capital expenditures	4,142	2,509
Assets	310,444		$ 310,095
United States [Member]
Segment Reporting Information [Line Items]
Revenues	39,051	42,677
UNITED KINGDOM
Segment Reporting Information [Line Items]
Revenues	4,735	7,973
EMEA, APAC and Canada [Domain]
Segment Reporting Information [Line Items]
Revenues	8,404	7,636
Non-US [Member]
Segment Reporting Information [Line Items]
Revenues	13,139	15,609
Tech & Clearance [Member]
Segment Reporting Information [Line Items]
Revenues	31,690	34,006
Depreciation	1,456	1,738
Amortization of intangible assets	0	728
Operating income (loss)	11,444	11,833
Capital expenditures	2,702	1,576
Assets	178,345		179,985
Global Industry Group Segment [Member]
Segment Reporting Information [Line Items]
Revenues	13,758	16,554
Depreciation	225	222
Amortization of intangible assets	364	1,471
Operating income (loss)	118	646
Capital expenditures	494	355
Assets	100,628		98,821
Healthcare Segment [Member]
Segment Reporting Information [Line Items]
Revenues	6,714	6,958
Depreciation	508	596
Amortization of intangible assets	162	218
Operating income (loss)	(450)	(278)
Capital expenditures	342	176
Assets	14,015		14,375
Corporate & Other Segment [Member]
Segment Reporting Information [Line Items]
Revenues	28	768
Depreciation	119	42
Amortization of intangible assets	35	49
Operating income (loss)	(6,817)	(9,559)
Capital expenditures	604	$ 402
Assets	$ 17,456		$ 16,914