Quarterly report pursuant to Section 13 or 15(d)

Stock-based compensation (Details)

v3.20.2
Stock-based compensation (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Aug. 01, 2020
Aug. 03, 2019
Aug. 01, 2020
Aug. 03, 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 $ 2,872 $ 2,199 $ 5,347 $ 4,319
Weighted-average grant date fair value of options granted (in dollars per share)     $ 54.40 $ 89.91
Unrecognized compensation expense 23,696   $ 23,696  
Restricted stock units        
Weighted-average assumptions to estimate fair value        
Stock-based compensation expense 5,161 3,422 $ 9,348 $ 6,243
Issued (in shares)     158 47
Unrecognized compensation expense 38,743   $ 38,743  
Performance-based restricted stock units        
Weighted-average assumptions to estimate fair value        
Stock-based compensation expense 380 $ 1,390 (100) $ 3,101
Issued (in shares)       21
Unrecognized compensation expense $ 1,019   $ 1,019