XML 62 R48.htm IDEA: XBRL DOCUMENT v3.8.0.1
Goodwill and Intangibles - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Nov. 18, 2017
Nov. 19, 2016
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization expense of intangible assets $ 1.4 $ 2.0