Acquisitions (Details 1) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Business Acquisition [Line Items]
Liability as of December 31, 2013	$ 3,797
Additions (Payments)	3,325
Change in Fair Value of Contingent Consideration	(858)
Foreign Currency Translation	20
Liability as of June 30, 2014	6,244
Bath Consulting [Member]
Business Acquisition [Line Items]
Liability as of December 31, 2013	997
Additions (Payments)	(1,005)
Change in Fair Value of Contingent Consideration	0
Foreign Currency Translation	(8)
Liability as of June 30, 2014	0
Prospero [Member]
Business Acquisition [Line Items]
Liability as of December 31, 2013	1,841
Additions (Payments)	0
Change in Fair Value of Contingent Consideration	(1,016)
Foreign Currency Translation	21
Liability as of June 30, 2014	804
Lorien [Member]
Business Acquisition [Line Items]
Liability as of December 31, 2013	959
Additions (Payments)	(1,015)
Change in Fair Value of Contingent Consideration	31
Foreign Currency Translation	(25)
Liability as of June 30, 2014	0
Effective Companies [Member]
Business Acquisition [Line Items]
Liability as of December 31, 2013	0
Additions (Payments)	5,345
Change in Fair Value of Contingent Consideration	127
Foreign Currency Translation	32
Liability as of June 30, 2014	$ 5,440