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Business Acquisitions (Fiscal Year 2018) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 01, 2017
Aug. 31, 2018
Business Acquisition [Line Items]    
Goodwill   $ 22,577
True-Tech    
Business Acquisition [Line Items]    
Amount of cash paid for business acquisitions $ 95,900  
Assets acquired 114,700  
Intangible assets acquired 25,900  
Goodwill 22,600  
Liabilities assumed $ 18,800