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Stock-Based Compensation - Narrative (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Oct. 01, 2018
Aug. 02, 2018
Oct. 02, 2017
Jul. 13, 2017
Jul. 14, 2016
Jul. 29, 2018
Jul. 30, 2017
Jan. 27, 2019
Jan. 28, 2018
Sep. 16, 2015
Performance Based Restricted Stock Units [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Remaining unrecognized compensation cost               $ 760    
Weighted average period over which unrecognized compensation cost is expected to be recognized               2 years    
Fair value of units expected to vest               $ 1,200    
Performance Based Restricted Stock Units [Member] | Employee [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of shares granted [1],[2]   47,800   44,000            
Vesting Period [2]   3 years   3 years            
Price Per Share [2],[3]   $ 24.35   $ 32.50            
Time Vested Restricted Stock Units [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Remaining unrecognized compensation cost               $ 219    
Weighted average period over which unrecognized compensation cost is expected to be recognized               4 years 4 months 24 days    
Fair value of units expected to vest               $ 185    
Time Vested Restricted Stock Units [Member] | Employee [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of shares granted       1,200 1,200          
Vesting Period       11 months 11 months          
Price Per Share   $ 24.35   $ 32.50 $ 28          
Number of shares vested           1,200 1,200      
Weighted average fair value of vested shares           $ 39 $ 34      
Weighted average fair value of vested shares, per share           $ 32.50 $ 28      
Time Vested Restricted Stock Units [Member] | Employee [Member] | Requisite Service Period for 10,000 Restricted Stock Units [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of shares granted   10,000                
Vesting Period   59 months                
Common Stock Awards [Member] | Outside Directors [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of shares granted 3,600   4,800              
Price Per Share $ 23.45   $ 33.20              
Selling, General and Administrative Expenses [Member] | Performance Based Restricted Stock Units [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Share-based compensation expense               259 $ 2,200  
Selling, General and Administrative Expenses [Member] | Time Vested Restricted Stock Units [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Share-based compensation expense               30 28  
Selling, General and Administrative Expenses [Member] | Common Stock Awards [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Share-based compensation expense               $ 84 $ 159  
2015 Equity Incentive Plan [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of common stock authorized for issuance                   1,200,000
Number of shares available for future equity based grants               969,406    
2007 Equity Incentive Plan [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of shares available for future equity based grants                   0
[1] Amounts represent the maximum number of common stock shares that could be earned if certain performance targets are met as defined in the related restricted stock unit agreements.
[2] Performance-based restricted stock units awarded to key employees.
[3] Price per share represents the closing price of our common stock on the date of grant.