Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Details)

v3.8.0.1
Acquisitions (Details)
$ in Thousands, € in Millions, £ in Millions
6 Months Ended
Feb. 01, 2018
USD ($)
Nov. 28, 2017
USD ($)
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 ($)
Nov. 30, 2016
GBP (£)
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
Business Acquisition [Line Items]                          
Payment to acquire business, net of cash acquired                       $ 119,689 $ 92,564
Star Granite Bronze International, Inc                          
Business Acquisition [Line Items]                          
Total purchase price $ 34,713                        
Payment to acquire business, net of cash acquired 29,713                        
Common stock issued in acquisition $ 5,000                        
Compass Engineering Group, Inc                          
Business Acquisition [Line Items]                          
Payment to acquire business, net of cash acquired   $ 50,794                      
Additional Acquisitions                          
Business Acquisition [Line Items]                          
Payment to acquire business, net of cash acquired                       $ 39,182  
GJ Creative Limited                          
Business Acquisition [Line Items]                          
Payment to acquire business, net of cash acquired     $ 37,596 £ 30.5                  
RAF Technology, Inc.                          
Business Acquisition [Line Items]                          
Payment to acquire business, net of cash acquired         $ 8,717                
VCG (Holdings) Limited                          
Business Acquisition [Line Items]                          
Payment to acquire business, net of cash acquired           $ 10,695 £ 8.8            
Ungricht                          
Business Acquisition [Line Items]                          
Payment to acquire business, net of cash acquired               $ 25,185 € 24.0        
Guidance Automation Limited                          
Business Acquisition [Line Items]                          
Payment to acquire business, net of cash acquired                   $ 9,974 £ 8.0