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Stock Compensation (Details Textual)
12 Months Ended
Feb. 29, 2020
USD ($)
share_based_compensation_plan
$ / shares
shares
Feb. 28, 2019
USD ($)
$ / shares
shares
Feb. 28, 2018
USD ($)
$ / shares
shares
Feb. 28, 2017
shares
Share Based Compensation (Textual) [Abstract]        
Number of share-based compensation plans | share_based_compensation_plan 2      
Unrecognized compensation cost | $ $ 9,600,000      
Unrecongized compensation cost, amortization period 1 year 8 months 23 days      
2014 Long Term Incentive Plan [Member]        
Share Based Compensation (Textual) [Abstract]        
Shares authorized (shares) 1,500,000      
Share for future issuance (shares) 1,300,000      
Employee Stock Purchase Plan [Member]        
Share Based Compensation (Textual) [Abstract]        
Granted option lower than 85.00%      
Restricted common stock under plan | $ $ 25,000      
Common stock purchased during period (shares) 5,000      
Directors Grants [Member]        
Share Based Compensation (Textual) [Abstract]        
Shares of company common stock (shares) 2,124 1,823 2,040  
Value of common stock grants (usd per share) | $ / shares $ 47.08 $ 54.85 $ 49.00  
Restricted Stock Units (RSUs) [Member]        
Share Based Compensation (Textual) [Abstract]        
Vesting ratably term 3 years      
Total fair value of vested shares | $ $ 3,800,000 $ 2,100,000 $ 3,000,000.0  
Non-vested shares outstanding (shares) 194,946 146,532 109,777  
Non-vested shares outstanding, weighted average grant date fair value (usd per share) | $ / shares $ 44.34 $ 48.93 $ 56.62  
Performance Shares [Member]        
Share Based Compensation (Textual) [Abstract]        
Vesting ratably term 3 years      
Non-vested shares outstanding (shares) 109,936 83,125    
Non-vested shares outstanding, weighted average grant date fair value (usd per share) | $ / shares $ 47.75 $ 50.62    
Stock Appreciation Rights (SARs) [Member]        
Share Based Compensation (Textual) [Abstract]        
Share for future issuance (shares) 100,000      
Share Based Compensation Arrangement by Share Based Payment Award Options and Other than Option Outstanding Number 94,826 98,184 148,513 170,139
Vesting ratably term 3 years      
Term for the contract 7 years      
Outstanding average contractual term 10 months 17 days      
Minimum [Member] | Performance Shares [Member]        
Share Based Compensation (Textual) [Abstract]        
Vesting percentage of award 0.00%      
Maximum [Member] | Performance Shares [Member]        
Share Based Compensation (Textual) [Abstract]        
Vesting percentage of award 250.00%