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Employee Benefit Plans - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Feb. 29, 2016
Feb. 28, 2015
Feb. 28, 2014
Jan. 28, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares) 2,478,719      
Number of shares available for grants 2,300,000      
Multi-employer plan contribution expense $ 0.3 $ 0.3 $ 0.1  
Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of controlling interest 50.00%      
Two Thousand Twelve Equity Compensation Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares that may be granted     3,000,000  
Number of shares available for grants 1,000,000      
Two Thousand Twelve Equity Compensation Plan | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration of Stock option under the plan 10 years      
Two Thousand Sixteen Equity Compensation Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares that may be granted       6,000,000
Granted (in shares) 700,000      
Two Thousand Sixteen Equity Compensation Plan | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration of Stock option under the plan 10 years      
401 (k) Retirement Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Minimum age for retirement saving plan 18 years      
Minimum days of service required to participate in retirement savings plan 30 days      
Maximum percentage of eligible compensation by employee 50.00%      
Maximum employer match on employee's contribution 33.00%      
Employer matching contribution on employee's salary percentage 6.00%      
Employer discretionary contribution $ 0.9 $ 1.1 $ 0.9