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Stock-Based Compensation Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Apr. 27, 2016
Apr. 18, 2016
Feb. 03, 2017
Oct. 28, 2016
Feb. 03, 2017
Jan. 29, 2016
Jan. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Equity instruments other than options, outstanding (in shares)         2,460,594    
Total stock-based compensation expense         $ 8,883 $ 841 $ 785
Weighted-average remaining requisite period         4 years    
Equity instruments other than options, granted, fair value (usd per share)         $ 13.28    
Employer matching contribution, percent of match         100.00%    
Employer matching contribution, percent of employees' gross pay         5.00%    
Contribution plan expense         $ 9,400 $ 6,700 5,300
Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Options outstanding, weighted-average contractual life (years)         9 years 2 months 21 days    
Price per share (usd per share)         $ 14.00    
Total stock-based compensation expense         $ 2,900    
Tax benefit related to stock-based compensation expense         1,200    
Compensation cost not yet recognized     $ 11,800   $ 11,800    
Weighted-average remaining requisite period         3 years 6 months 5 days    
Exercises in period (in shares)         0    
Options outstanding (in shares)     2,578,167   2,578,167 0  
Employee Stock Option | Employee              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Equity instruments other than options, outstanding (in shares)         2,669,788    
Price per share (usd per share)         $ 14.00    
Stock options vesting period         4 years    
Employee Stock Option | Director              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Equity instruments other than options, outstanding (in shares)     49,916   240,715    
Price per share (usd per share)     $ 13.99        
Stock options vesting period     3 years        
Restricted Stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Equity instruments other than options, outstanding (in shares) 662,225            
Equity instruments other than options, granted, fair value (usd per share) $ 14.00            
Restricted Stock Units (RSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Equity instruments other than options, outstanding (in shares) 1,378,436       344,034    
Total stock-based compensation expense         $ 5,400    
Equity instruments other than options, granted, fair value (usd per share)         $ 10.90    
Restricted Stock Units (RSUs) | Director              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Equity instruments other than options, outstanding (in shares) 66,965     8,934      
Equity instruments other than options, granted, fair value (usd per share)       $ 13.99      
Non-Option Equity Instruments              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation cost not yet recognized     $ 22,000   $ 22,000    
Weighted-average remaining requisite period         3 years 5 months 27 days    
2016 Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Options outstanding, weighted-average contractual life (years)   10 years          
2016 Plan | Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Options outstanding, weighted-average contractual life (years)   5 years          
2016 Plan | Common Stock, Class A              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Percentage of fair market value of Class A common stock   100.00%          
2016 Plan | Common Stock, Class A | Stock Compensation Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares reserved for future issuance (in shares)   8,500,000          
2016 Plan | Common Stock, Class A | Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Percentage of fair market value of Class A common stock   110.00%          
Stockholder, percent ownership   10.00%          
2013 Plan | Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Price per share (usd per share)         $ 13.75    
Total stock-based compensation expense         $ 500 $ 800 $ 800
Exercises in period (in shares)         78,544    
Exercises in period, intrinsic value         $ 1,200    
2013 Plan | Employee Stock Option, Time Based              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Unvested time-based awards forfeited (in shares) 165,820            
2013 Plan | Employee Stock Option, Performance Based              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Options outstanding (in shares)     432,001   432,001