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Share-Based Compensation - Share-based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Nov. 02, 2019
Nov. 03, 2018
Nov. 02, 2019
Nov. 03, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 5,185 $ 4,545 $ 14,639 $ 12,534
Stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 829 824 2,116 2,191
Stock awards/units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 4,298 3,692 12,318 10,154
Employee Stock Purchase Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 58 $ 29 $ 205 $ 189