v3.7.0.1
Summary of Stock Option Activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Apr. 29, 2017
Apr. 30, 2016
Options    
Outstanding - beginning of period 2,314,000  
Granted 1,055,000 0
Exercised 0  
Cancelled 51,000  
Outstanding- end of period 3,318,000  
Vested and expected to vest-end of period 3,050,000  
Exercisable-end of period [1] 39,000  
Weighted-Average Exercise Price    
Outstanding-beginning of period $ 15.33  
Granted 14.59  
Cancelled 15.81  
Outstanding-end of period 15.09  
Vested and expected to vest-end of period 15.09  
Exercisable-end of period [1] $ 12.10  
Weighted-Average Remaining Contractual Term (In years)    
Outstanding-end of period 6 years 2 months 12 days  
Vested and expected to vest-end of period 6 years 2 months 12 days  
Exercisable-end of period [1] 6 months  
Aggregate Intrinsic Value    
Outstanding-end of period $ 77  
Vested and expected to vest-end of period 77  
Exercisable-end of period [1] $ 77  
[1] Options exercisable represent “in-the-money” vested options based upon the weighted-average exercise price of vested options compared to the Company’s stock price at April 29, 2017.