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Goodwill and Intangible Assets - Components of Identifiable Intangible Assets (Detail) - USD ($)
$ in Thousands
 6 Months Ended
Dec. 28, 2017
Jun. 29, 2017
Dec. 29, 2016
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross $ 19,670 $ 18,690  
Less accumulated amortization:      
Total accumulated amortization (329)    
Net intangible assets $ 19,341 $ 0 $ 611
Weighted-average amortization period 11 years 3 months 19 days    
Customer Relationships [Member] | Squirrel Brand [Member]      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross $ 10,500    
Less accumulated amortization:      
Total accumulated amortization $ (267)    
Weighted-average amortization period 7 years 6 months    
Brand Names [Member] | Squirrel Brand [Member]      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross $ 8,900    
Less accumulated amortization:      
Total accumulated amortization $ (58)    
Weighted-average amortization period 13 years 9 months 18 days    
Non-compete Agreement [Member] | Squirrel Brand [Member]      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross $ 270    
Less accumulated amortization:      
Total accumulated amortization $ (4)    
Weighted-average amortization period 5 years