Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation Plans - Deferred Stock Units, Performance Units and Restricted Stock (Details)

v3.7.0.1
Share-Based Compensation Plans - Deferred Stock Units, Performance Units and Restricted Stock (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Apr. 29, 2017
Apr. 30, 2016
Share-based compensation    
Share-based compensation expense $ 4.7 $ 4.1
Deferred stock units    
Additional information    
Shares relinquished for tax withholding 121,993  
Unrecognized compensation cost    
Unrecognized compensation cost, non-vested awards $ 18.5  
Compensation recognition period, non-vested awards 1 year 6 months  
Time-Based DSUs    
Shares    
Non-Vested at the beginning of the period (in shares) 1,061,965  
Vested (in shares) (350,291)  
Forfeited (in shares) (11,596)  
Non-Vested at the end of the period (in shares) 700,078  
Weighted-Average Grant-Date Fair Value    
Non-Vested at the beginning of the period (in dollars per share) $ 24.31  
Vested (in dollars per share) 29.40  
Forfeited (in dollars per share) 23.76  
Non-Vested at the end of the period (in dollars per share) $ 21.77  
Performance-Based DSUs    
Shares    
Non-Vested at the beginning of the period (in shares) 523,948  
Forfeited (in shares) (737)  
Non-Vested at the end of the period (in shares) 523,211  
Weighted-Average Grant-Date Fair Value    
Non-Vested at the beginning of the period (in dollars per share) $ 28.28  
Forfeited (in dollars per share) 54.26  
Non-Vested at the end of the period (in dollars per share) $ 28.24  
Restricted Stock    
Shares    
Non-Vested at the beginning of the period (in shares) 36,878  
Vested (in shares) (36,878)  
Weighted-Average Grant-Date Fair Value    
Non-Vested at the beginning of the period (in dollars per share) $ 15.56  
Vested (in dollars per share) $ 15.56