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Fair Value Measurements (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Nov. 02, 2019
Aug. 03, 2019
Nov. 03, 2018
Nov. 02, 2019
Nov. 03, 2018
Feb. 02, 2019
Fair value measurements            
Carrying value $ 510     $ 510   $ 4,829
Impairment charge 0 $ 300 $ 2,999 311 $ 2,999 4,384
Impairment charge that reduced carrying value       200    
Level 3            
Fair value measurements            
Fair value measured using Level 3 inputs $ 199     $ 199   $ 445