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Employee Benefit Plans - Additional Information (Details) - USD ($)
12 Months Ended 36 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2017
Feb. 28, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted 259,000      
Number of shares available for grants 2,000,000     2,000,000
Multi-employer plan contribution expense $ 300,000 $ 300,000 $ 300,000  
Two Thousand Seventeen Equity Compensation Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares that may be granted 2,000,000     2,000,000
Number of shares available for grants 1,700,000     1,700,000
Two Thousand Seventeen 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%      
Employer discretionary contribution       $ 0