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Equity Award Plans - Summarizes Information about Stock Options Outstanding (Details)
shares in Thousands
12 Months Ended
Feb. 03, 2018
$ / shares
shares
3.52 to $7.00  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range $ 3.52
Range of Exercise Prices, upper range $ 7.00
Stock Options Outstanding, Number Outstanding | shares 74
Stock Options Outstanding, Weighted Average Remaining Life 8 years 6 months
Stock Options Outstanding, Weighted Average Exercise Price $ 5.61
Stock Options Exercisable, Number Exercisable | shares 19
Stock Options Exercisable, Weighted Average Exercise Price $ 5.60
7.01 to 8.00  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range 7.01
Range of Exercise Prices, upper range $ 8.00
Stock Options Outstanding, Number Outstanding | shares 211
Stock Options Outstanding, Weighted Average Remaining Life 8 years 2 months 12 days
Stock Options Outstanding, Weighted Average Exercise Price $ 7.49
Stock Options Exercisable, Number Exercisable | shares 53
Stock Options Exercisable, Weighted Average Exercise Price $ 7.49
8.01 to 14.00  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range 8.01
Range of Exercise Prices, upper range $ 14.00
Stock Options Outstanding, Number Outstanding | shares 24
Stock Options Outstanding, Weighted Average Remaining Life 4 years 4 months 24 days
Stock Options Outstanding, Weighted Average Exercise Price $ 11.63
Stock Options Exercisable, Number Exercisable | shares 19
Stock Options Exercisable, Weighted Average Exercise Price $ 11.72
14.01 to 15.00  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range 14.01
Range of Exercise Prices, upper range $ 15.00
Stock Options Outstanding, Number Outstanding | shares 177
Stock Options Outstanding, Weighted Average Remaining Life 6 years 8 months 12 days
Stock Options Outstanding, Weighted Average Exercise Price $ 14.39
Stock Options Exercisable, Number Exercisable | shares 128
Stock Options Exercisable, Weighted Average Exercise Price $ 14.37
15.01 to 19.00  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range 15.01
Range of Exercise Prices, upper range $ 19.00
Stock Options Outstanding, Number Outstanding | shares 10
Stock Options Outstanding, Weighted Average Remaining Life 7 years
Stock Options Outstanding, Weighted Average Exercise Price $ 15.31
Stock Options Exercisable, Number Exercisable | shares 8
Stock Options Exercisable, Weighted Average Exercise Price $ 15.31
19.01 to 23.00  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range 19.01
Range of Exercise Prices, upper range $ 23.00
Stock Options Outstanding, Number Outstanding | shares 33
Stock Options Outstanding, Weighted Average Remaining Life 4 years 6 months
Stock Options Outstanding, Weighted Average Exercise Price $ 20.55
Stock Options Exercisable, Number Exercisable | shares 31
Stock Options Exercisable, Weighted Average Exercise Price $ 20.62
23.01 to 31.38  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range 23.01
Range of Exercise Prices, upper range $ 31.38
Stock Options Outstanding, Number Outstanding | shares 15
Stock Options Outstanding, Weighted Average Remaining Life 5 years 9 months 18 days
Stock Options Outstanding, Weighted Average Exercise Price $ 30.93
Stock Options Exercisable, Number Exercisable | shares 15
Stock Options Exercisable, Weighted Average Exercise Price $ 30.93
3.52 to $31.38  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, lower range 3.52
Range of Exercise Prices, upper range $ 31.38
Stock Options Outstanding, Number Outstanding | shares 544
Stock Options Outstanding, Weighted Average Remaining Life 7 years 3 months 18 days
Stock Options Outstanding, Weighted Average Exercise Price $ 11.26
Stock Options Exercisable, Number Exercisable | shares 273
Stock Options Exercisable, Weighted Average Exercise Price $ 13.94