Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Details)

v3.7.0.1
Acquisitions (Details)
$ in Thousands, € in Millions, £ in Millions
Mar. 01, 2017
USD ($)
Mar. 01, 2017
GBP (£)
Feb. 28, 2017
USD ($)
Jan. 13, 2017
USD ($)
Jan. 13, 2017
GBP (£)
Jan. 03, 2017
USD ($)
Jan. 03, 2017
EUR (€)
Nov. 30, 2016
USD ($)
Nov. 30, 2016
GBP (£)
Feb. 01, 2016
USD ($)
GJ Creative Limited                    
Business Acquisition [Line Items]                    
Acquisition price $ 37,596 £ 30.5                
RAF Technology, Inc.                    
Business Acquisition [Line Items]                    
Acquisition price     $ 8,746              
VCG (Holdings) Limited                    
Business Acquisition [Line Items]                    
Acquisition price       $ 10,695 £ 8.8          
Ungricht                    
Business Acquisition [Line Items]                    
Acquisition price           $ 23,736 € 22.7      
Guidance Automation Limited                    
Business Acquisition [Line Items]                    
Acquisition price               $ 9,974 £ 8.0  
DDI                    
Business Acquisition [Line Items]                    
Acquisition price                   $ 8,773