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Share-Based Compensation - Share-Based Compensation Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 29, 2017
Jul. 30, 2016
Jul. 29, 2017
Jul. 30, 2016
Share-based Compensation [Abstract]        
Stock Options $ 117 $ 87 $ 211 $ 168
Restricted Stock Awards and Restricted Stock Units 289 142 363 372
Employee Stock Purchase Plan 3 3 6 6
Total $ 409 $ 232 $ 580 $ 546