FAIR VALUE (NARRATIVE) (DETAILS) - USD ($) $ in Thousands			3 Months Ended						12 Months Ended
	Aug. 08, 2014	Feb. 28, 2014	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Aug. 09, 2013
Business acquisitions, Contingent Consideration [Line Items]
Average interest rate on annual borrowings									1.20%	1.20%
Future Value of Liabilities Incurred From Business Acquisitions			$ 13,800						$ 13,800
Valuation Technique on Contingent Consideration									Contingent Consideration - The Company recorded contingent consideration related to the acquisitions of iKnowtion, Guidon, TSG, WebMetro, Sofica and rogenSi. These contingent payables were recognized at fair value using a discounted cash flow approach and a discount rate of 21.0%, 21.0%, 4.6%, 5.3%, 5.0%, or 4.6%, respectively. The discount rates vary dependent on the specific risks of each acquisition including the country of operation, the nature of services and complexity of the acquired business, and other factors. These measurements were based on significant inputs not observable in the market. The Company will accrete interest expense each period using the effective interest method until the future value of these contingent payables reaches their expected future value of $13.8 million. Interest expense related to all recorded contingent payables is included in Interest expense in the Consolidated Statements of Comprehensive Income (Loss).
Technology Solutions Group [Member]
Business acquisitions, Contingent Consideration [Line Items]
Increase (decrease) in contingent consideration payable						$ 3,900		$ 4,000
Sofica [Member]
Business acquisitions, Contingent Consideration [Line Items]
Future Value of Liabilities Incurred From Business Acquisitions		$ 3,800
Valuation Technique on Contingent Consideration		The fair value of the contingent consideration was measured based on significant inputs not observable in the market (Level 3 inputs). Key assumptions include a discount rate of 5.0% and expected future value of payments of $4.0 million. The $4.0 million of expected future payments was calculated using a probability weighted EBITDA assessment with the highest probability associated with Sofica achieving the targeted EBITDA for each earn-out year.
Increase (decrease) in contingent consideration payable					$ 500	600	$ 1,800
WebMetro [Member]
Business acquisitions, Contingent Consideration [Line Items]
Future Value of Liabilities Incurred From Business Acquisitions											$ 2,600
Valuation Technique on Contingent Consideration									The fair value of the contingent payments was measured based on significant inputs not observable in the market (Level 3 inputs). Key assumptions include a discount rate of 5.3% and expected future value of payments of $2.6 million. The $2.6 million of expected future payments was calculated using probability weighted EBITDA assessment with the highest probability associated with WebMetro achieving the targeted EBITDA for each earn-out year.
Increase (decrease) in contingent consideration payable							$ 1,700
rogenSi [Member]
Business acquisitions, Contingent Consideration [Line Items]
Future Value of Liabilities Incurred From Business Acquisitions	$ 15,300
Valuation Technique on Contingent Consideration	The fair value of the contingent consideration was measured by applying a probability weighted discounted cash flow model based on significant inputs not observable in the market (Level 3 inputs). Key assumptions include a discount rate of 4.6% and expected future value of payments of $15.3 million. The $15.3 million of expected future payments was calculated using a probability weighted EBITDA assessment with the highest probability associated with rogenSi achieving the targeted EBITDA for each earn-out year.
Increase (decrease) in contingent consideration payable			$ 300	$ 800		$ 500