Quarterly report pursuant to Section 13 or 15(d)

Stock-based compensation (Details)

v3.21.2
Stock-based compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Oct. 30, 2021
Oct. 31, 2020
Oct. 30, 2021
Oct. 31, 2020
Employee Stock Option        
Weighted-average assumptions to estimate fair value        
Volatility rate (as a percent)     46.90% 43.00%
Average risk-free interest rate (as a percent)     0.40% 0.30%
Average expected life     3 years 10 months 24 days 3 years 4 months 24 days
Dividend yield (as a percent)     0.00% 0.00%
Granted (in shares)     61,000 248,000
Total compensation expense $ 2,712 $ 2,900 $ 8,710 $ 8,247
Weighted-average grant date fair value of options granted (in dollars per share)     $ 109.72 $ 54.40
Unrecognized compensation expense 14,108   $ 14,108  
Restricted stock units        
Weighted-average assumptions to estimate fair value        
Total compensation expense 4,622 5,098 $ 14,606 $ 14,446
Granted (in shares)     60,000 161,000
Unrecognized compensation expense 27,111   $ 27,111  
Performance Based Restricted Stock Units        
Weighted-average assumptions to estimate fair value        
Granted (in shares)     46,000 0
Total compensation expense 1,786 386 $ 4,901 $ 286
Unrecognized compensation expense 15,898   15,898  
Market-based restricted stock units        
Weighted-average assumptions to estimate fair value        
Compensation expense (benefit) $ 3,289 $ 198 7,671 $ (331)
Total compensation expense     $ 10,000  
Shares settled (in shares)     28,000