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Stock-Based Compensation - Restricted Stock (Details) - Restricted Stock [Member]
$ in Millions
9 Months Ended
Dec. 01, 2018
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized compensation expense related to unvested restricted stock $ 112.3
Period for recognition, weighted average period (in years) 4 years 1 month 18 days
The 2012 Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period commencement minimum (in years) 1 year
Vesting period commencement maximum (in years) 3 years
Minimum [Member] | The 2012 Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period, number of equal annual installments 5
Maximum [Member] | The 2012 Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period, number of equal annual installments 7