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Commitments and Contingencies (Details) - USD ($)
$ in Millions
6 Months Ended
Aug. 03, 2019
May 31, 2019
Feb. 02, 2019
Annual Bonuses and Equity Incentive Awards [Abstract]      
Annual bonus related expenses included in accrued payroll expenses $ 3.9   $ 3.9
Accrued compensation $ 2.4    
Jeffry Rosenthal [Member]      
Annual Bonuses and Equity Incentive Awards [Abstract]      
Salary continuation payable   $ 0.6  
Maximum term of salary continuation 1 year    
Jeffry Rosenthal [Member] | Maximum [Member]      
Annual Bonuses and Equity Incentive Awards [Abstract]      
Cash lump sum payment   $ 1.0