FAIR VALUE (CONTINGENT CONSIDERATION TABLE) (DETAILS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Business acquisitions, Contingent Consideration [Line Items]
Beginning balance, contingent consideration payable	$ 24,744	$ 21,748
Acquisitions		18,373
Payments	(12,010)	(9,144)
Imputed Interest/ Adjustment	716	(6,233)
Ending balance, contingent consideration payable	13,450	24,744
Iknowtion [Member]
Business acquisitions, Contingent Consideration [Line Items]
Beginning balance, contingent consideration payable	2,265	3,470
Payments	(1,800)	(1,400)
Imputed Interest/ Adjustment	35	195
Ending balance, contingent consideration payable	500	2,265
Guidon [Member]
Business acquisitions, Contingent Consideration [Line Items]
Beginning balance, contingent consideration payable	1,000	2,637
Payments	(1,000)	(1,426)
Imputed Interest/ Adjustment		(211)
Ending balance, contingent consideration payable	0	1,000
Technology Solutions Group [Member]
Business acquisitions, Contingent Consideration [Line Items]
Beginning balance, contingent consideration payable	0	12,933
Payments		(5,292)
Imputed Interest/ Adjustment		(7,641)
Ending balance, contingent consideration payable	0	0
WebMetro [Member]
Business acquisitions, Contingent Consideration [Line Items]
Beginning balance, contingent consideration payable	0	2,708
Payments		(1,026)
Imputed Interest/ Adjustment		(1,682)
Ending balance, contingent consideration payable	0	0
Sofica [Member]
Business acquisitions, Contingent Consideration [Line Items]
Beginning balance, contingent consideration payable	6,317	0
Acquisitions		3,830
Payments	(2,838)
Imputed Interest/ Adjustment	(326)	2,487
Ending balance, contingent consideration payable	3,153	6,317
rogenSi [Member]
Business acquisitions, Contingent Consideration [Line Items]
Beginning balance, contingent consideration payable	15,162	0
Acquisitions		14,543
Payments	(6,372)
Imputed Interest/ Adjustment	1,007	619
Ending balance, contingent consideration payable	$ 9,797	$ 15,162