XML 59 R49.htm IDEA: XBRL DOCUMENT v3.10.0.1
Stock-Based Compensation - Performance Stock Units (Details) - Performance Stock Units [Member]
$ in Millions
6 Months Ended
Sep. 01, 2018
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized compensation expense related to unvested performance stock units $ 29.4
Period for recognition, weighted average period (in years) 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] | One-year Performance Period Awards [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
The 2012 Plan [Member] | Minimum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Target award percentage 0.00%