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Share-based Compensation (Details Textual)
12 Months Ended
Feb. 28, 2021
USD ($)
share_based_compensation_plan
$ / shares
shares
Feb. 29, 2020
USD ($)
$ / shares
shares
Feb. 28, 2019
USD ($)
$ / shares
shares
Feb. 28, 2018
$ / shares
shares
Share Based Compensation (Textual) [Abstract]        
Number of share-based compensation plans | share_based_compensation_plan 2      
Unrecognized compensation cost | $ $ 9,100,000      
Unrecongized compensation cost, amortization period 1 year 8 months 19 days      
Excess Tax Benefit excluded from cash flow | $ $ (400,000) $ (100,000) $ (300,000)  
Shares Issued, Value, Share-based Payment Arrangement, before Forfeiture | $ $ 2,300,000 $ 3,800,000 $ 2,100,000  
2014 Long Term Incentive Plan        
Share Based Compensation (Textual) [Abstract]        
Shares authorized (shares) 1,500,000      
Share for future issuance (shares)   800,000    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 2,724      
2005 Long Term Incentive Plan        
Share Based Compensation (Textual) [Abstract]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 2,711      
Employee Stock Purchase Plan        
Share Based Compensation (Textual) [Abstract]        
Shares authorized (shares) 1,500,000      
Share for future issuance (shares) 1,300,000      
Granted option lower than 85.00%      
Restricted common stock under plan | $ $ 25,000      
Common stock purchased during period (shares) 5,000      
Directors Grants        
Share Based Compensation (Textual) [Abstract]        
Shares of company common stock (shares) 3,174 2,124 1,823  
Value of common stock grants (usd per share) | $ / shares $ 33.08 $ 47.08 $ 54.85  
Restricted Stock Units (RSUs)        
Share Based Compensation (Textual) [Abstract]        
Non-vested shares outstanding (shares) 226,446 194,946 146,532 109,777
Vesting ratably term 3 years      
Non-vested shares outstanding, weighted average grant date fair value (usd per share) | $ / shares $ 35.66 $ 44.34 $ 48.93 $ 56.62
Performance Shares        
Share Based Compensation (Textual) [Abstract]        
Non-vested shares outstanding (shares) 143,584 109,936 83,125 70,030
Vesting ratably term 3 years      
Non-vested shares outstanding, weighted average grant date fair value (usd per share) | $ / shares $ 39.96 $ 47.75 $ 49.74 $ 54.59
Performance Shares | Minimum        
Share Based Compensation (Textual) [Abstract]        
Vesting percentage of award 0.00%      
Performance Shares | Maximum        
Share Based Compensation (Textual) [Abstract]        
Vesting percentage of award 250.00%      
Stock Appreciation Rights (SARs)        
Share Based Compensation (Textual) [Abstract]        
Vesting ratably term 3 years      
Term for the contract 7 years      
Shares of company common stock (shares) 0 0 0  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 4 months 2 days      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $ $ 0      
Restricted Stock        
Share Based Compensation (Textual) [Abstract]        
Vesting ratably term 3 years