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Stock-Based Compensation - Performance Stock Units (Details) - Performance Stock Units [Member]
$ in Millions
6 Months Ended
Aug. 31, 2019
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized compensation expense related to unvested performance stock units $ 7.5
Period for recognition, weighted average period 2 years
Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Target award percentage 150.00%
The 2012 Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period (in years) 4 years
The 2012 Plan [Member] | Minimum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period (in years) 3 years
Target award percentage 0.00%
The 2012 Plan [Member] | Minimum [Member] | One-year Performance Period Awards [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period commencement (in years) 1 year
The 2012 Plan [Member] | Maximum [Member] | One-year Performance Period Awards [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period commencement (in years) 3 years