Annual report pursuant to Section 13 and 15(d)

Stock Compensation Plans - Schedule of Transactions Involving Outstanding Stock Options and Non-Vested Restricted Stock and Restricted Stock Unit Awards Under 2006 Plan (Detail)

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Stock Compensation Plans - Schedule of Transactions Involving Outstanding Stock Options and Non-Vested Restricted Stock and Restricted Stock Unit Awards Under 2006 Plan (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Oct. 29, 2017
Oct. 30, 2016
Nov. 01, 2015
Nov. 02, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Number of shares, Outstanding Beginning balance (shares) 1,921,036 980,414    
Number of shares, Outstanding Ending balance (shares) 2,499,923 1,921,036 980,414  
Employee Stock Option        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]        
Weighted average exercise price, Outstanding balance (USD per share) $ 5.52      
Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]        
Number of shares, Outstanding Beginning balance (shares) 229,735 50,159    
Number of shares, Outstanding Ending balance (shares) 338,968 229,735 50,159  
2015 Equity Incentive Plan | Employee Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Number of shares, Outstanding Beginning balance (shares) 978,406 0    
Number of shares, Granted (shares) 851,488 981,154    
Number of shares, Forfeited (shares) (54,270) (2,748)    
Number of shares, Vested (shares) 0 0    
Number of shares, Outstanding Ending balance (shares) 1,775,624 978,406 0  
Number of shares, Unvested (shares) 1,400,714      
Number of shares, Exercisable (shares) 374,910      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]        
Weighted average exercise price, Outstanding balance (USD per share)   $ 0.00    
Weighted average exercise price, Granted (USD per share) $ 4.46 6.48    
Weighted average exercise price, Forfeited (USD per share) 6.14 $ 6.06    
Weighted average exercise price, Outstanding balance (USD per share)     $ 0.00  
Weighted average exercise price, Unvested (USD per share) 5.18      
Weighted average exercise price, Exercisable (USD per share) $ 6.79      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]        
Weighted average contractual life, Outstanding 9 years 11 days 9 years 6 months 4 days 0 years  
Weighted average contractual life, Unvested 9 years 2 months 9 days      
Weighted average contractual life, Exercisable 8 years 5 months 5 days      
Aggregate Intrinsic Value, Outstanding $ 2,881 $ 242 $ 0  
Aggregate Intrinsic Value, Expected to vest 1,796      
Aggregate Intrinsic Value, Exercisable $ 1,085      
2015 Equity Incentive Plan | Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]        
Number of shares, Outstanding Beginning balance (shares) 185,952 0    
Number of shares, Granted (shares) 248,915 261,721    
Number of shares, Forfeited (shares) (10,862) (550)    
Number of shares, Vested (shares) (137,816) (75,219)    
Number of shares, Deferred (shares) 36,885      
Number of shares, Outstanding Ending balance (shares) 323,074 185,952 0  
Number of shares, Unvested (shares)      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]        
Weighted average grant date fair value, Outstanding (USD per share) $ 7.13 $ 0.00    
Weighted average grant date fair value, Granted (USD per share) 4.43 6.41    
Weighted average grant date fair value, Forfeited (USD per share) 6.14 6.06    
Weighted average grant date fair value, Vested (USD per share) 5.36 6.06    
Weighted average grant date fair value, Outstanding (USD per share) 5.09 $ 7.13 $ 0.00  
Weighted average grant date fair value, Deferred (USD per share) 4.35      
Weighted average grant date fair value, Unvested (USD per share)      
2006 Plan | Employee Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Number of shares, Outstanding Beginning balance (shares) 942,629 980,414 764,150  
Number of shares, Granted (shares)   189,897 393,528  
Number of shares, Exercised (shares) (300) (11,682) (83,264)  
Number of shares, Forfeited (shares) (218,031) (216,000) (94,000)  
Number of shares, Vested (shares) 0 0 0  
Number of shares, Outstanding Ending balance (shares) 724,298 942,629 980,414 764,150
Number of shares, Unvested (shares) 76,889      
Number of shares, Exercisable (shares) 647,409      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]        
Weighted average exercise price, Outstanding balance (USD per share) $ 8.97 $ 9.14 $ 9.22  
Weighted average exercise price, Granted (USD per share)   7.18 9.21  
Weighted average exercise price, Exercised (USD per share) 6.39 6.39 6.39  
Weighted average exercise price, Forfeited (USD per share) 11.26 8.34 12.49  
Weighted average exercise price, Outstanding balance (USD per share) 8.28 $ 8.97 $ 9.14 $ 9.22
Weighted average exercise price, Unvested (USD per share) 7.42      
Weighted average exercise price, Exercisable (USD per share) $ 8.38      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]        
Weighted average contractual life, Outstanding 6 years 1 month 24 days 6 years 10 months 28 days 5 years 3 months 23 days 5 years 5 months 5 days
Weighted average contractual life, Unvested 9 years 3 months 15 days      
Weighted average contractual life, Exercisable 6 years 10 months 24 days      
Aggregate Intrinsic Value, Outstanding $ 3,170 $ 1 $ 727 $ 776
Aggregate Intrinsic Value, Expected to vest 271      
Aggregate Intrinsic Value, Exercisable $ 2,899      
2006 Plan | Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]        
Number of shares, Outstanding Beginning balance (shares) 43,781 50,159 23,334  
Number of shares, Granted (shares)   38,314 170,979  
Number of shares, Forfeited (shares) (12,426) 0 0  
Number of shares, Vested (shares) (15,463) (44,692) (144,154)  
Number of shares, Outstanding Ending balance (shares) 15,892 43,781 50,159 23,334
Number of shares, Unvested (shares)      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]        
Weighted average grant date fair value, Outstanding (USD per share) $ 7.35 $ 9.17 $ 7.68  
Weighted average grant date fair value, Granted (USD per share)   7.18 9.32  
Weighted average grant date fair value, Forfeited (USD per share) 7.15 0.00 0.00  
Weighted average grant date fair value, Vested (USD per share) 7.42 9.24 9.11  
Weighted average grant date fair value, Outstanding (USD per share) 7.44 $ 7.35 $ 9.17 $ 7.68
Weighted average grant date fair value, Unvested (USD per share)