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Equity Award Plans - Summarizes Information about Stock Options Outstanding (Details)
shares in Thousands
12 Months Ended
Feb. 02, 2019
$ / shares
shares
2.65 to 5.00  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range $ 2.65
Range of Exercise Prices, upper range $ 5.00
Stock Options Outstanding, Number Outstanding | shares 222
Stock Options Outstanding, Weighted Average Remaining Life 9 years 3 months 19 days
Stock Options Outstanding, Weighted Average Exercise Price $ 2.70
5.01 to 10.00  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range 5.01
Range of Exercise Prices, upper range $ 10.00
Stock Options Outstanding, Number Outstanding | shares 143
Stock Options Outstanding, Weighted Average Remaining Life 8 years 6 months
Stock Options Outstanding, Weighted Average Exercise Price $ 6.38
Stock Options Exercisable, Number Exercisable | shares 36
Stock Options Exercisable, Weighted Average Exercise Price $ 7.49
10.01 to 31.38  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range 10.01
Range of Exercise Prices, upper range $ 31.38
Stock Options Outstanding, Number Outstanding | shares 74
Stock Options Outstanding, Weighted Average Remaining Life 5 years 6 months
Stock Options Outstanding, Weighted Average Exercise Price $ 15.51
Stock Options Exercisable, Number Exercisable | shares 69
Stock Options Exercisable, Weighted Average Exercise Price $ 15.70
2.65 to 31.38  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range 2.65
Range of Exercise Prices, upper range $ 31.38
Stock Options Outstanding, Number Outstanding | shares 439
Stock Options Outstanding, Weighted Average Remaining Life 8 years 4 months 24 days
Stock Options Outstanding, Weighted Average Exercise Price $ 6.06
Stock Options Exercisable, Number Exercisable | shares 105
Stock Options Exercisable, Weighted Average Exercise Price $ 12.90