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STOCKHOLDERS' EQUITY (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 07, 2018
Feb. 29, 2020
Feb. 28, 2019
Feb. 28, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares repurchased   0 2,496,422 0
Issuance of common stock under ESPP 1,750,000      
Stock-based compensation expense   $ 12,421 $ 11,029 $ 9,298
Shares available for grant   482,871    
Unrecognized share-based compensation cost   $ 26,300    
Unrecognized compensation cost, recognition period   3 years 4 months 24 days    
Aggregate fair value of stock options exercised and vested restricted stock-based awards   $ 9,600 8,600 6,900
Excess tax deductions from equity awards   0 $ 2,900 $ 2,600
Employee Stock Purchase Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense   $ 500    
Employee Stock Option [Member] | 2004 Incentive Stock Plan [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration term   10 years    
Vesting period   4 years