Quarterly report pursuant to Section 13 or 15(d)

Stock-based compensation (Details)

v3.20.1
Stock-based compensation (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
May 02, 2020
May 04, 2019
Stock options    
Weighted-average assumptions to estimate fair value    
Volatility rate (as a percent) 43.00% 31.00%
Average risk-free interest rate (as a percent) 0.30% 2.30%
Average expected life 3 years 4 months 24 days 3 years 6 months
Dividend yield (as a percent) 0.00% 0.00%
Granted (in shares) 248 97
Stock-based compensation expense $ 2,475 $ 2,120
Weighted-average grant date fair value of options granted (in dollars per share) $ 54.40 $ 89.91
Unrecognized compensation expense $ 26,649  
Restricted stock units    
Weighted-average assumptions to estimate fair value    
Stock-based compensation expense $ 4,187 $ 2,821
Issued (in shares) 152 39
Unrecognized compensation expense $ 42,550  
Performance-based restricted stock units    
Weighted-average assumptions to estimate fair value    
Stock-based compensation expense (480) $ 1,711
Issued (in shares)   21
Unrecognized compensation expense $ 2,123