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Related Party Transactions - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Nov. 02, 2018
Nov. 01, 2018
Dec. 31, 2017
Mommy Guru      
Related Party Transaction [Line Items]      
Marketing fee paid     $ 2.4
Voting Agreement      
Related Party Transaction [Line Items]      
Percentage of voting power of capital stock outstanding 1990.00% 19.90%  
Voting power description   Mr. Delug will have voting power over an aggregate of up to 6,301,882 shares of the Company's common stock through (i) 2,367,041 shares of common stock held directly, and (ii) 3,934,841 shares of common stock held by the Initial Designating Parties  
Organizational Design Initiative | Voting Agreement | Maximum      
Related Party Transaction [Line Items]      
Percentage of voting power of capital stock outstanding   20.00%  
Chief Marketing Officer | Mommy Guru      
Related Party Transaction [Line Items]      
Marketing fee paid     1.9
Compensation expense     $ 0.1
Mr Yaney      
Related Party Transaction [Line Items]      
Payment for consideration   $ 0.1