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Consolidated Statements of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Additional Paid in Capital
Accumulated Other Comprehensive Income (Loss)
Retained Earnings
Beginning balance (in shares) at Feb. 29, 2020   25,194      
Beginning balance at Feb. 29, 2020 $ 1,161,723 $ 2,519 $ 268,043 $ (7,005) $ 898,166
Increase (Decrease) in Stockholders' Equity          
Net income 253,946       253,946
Other comprehensive income (loss), net of tax (4,651)     (4,651)  
Exercise of stock options (in shares)   21      
Exercise of stock options 1,594 $ 2 1,592    
Issuance and settlement of restricted stock (in shares)   194      
Issuance and settlement of restricted stock 0 $ 20 (20)    
Issuance of common stock related to stock purchase plan (in shares)   27      
Issuance of common stock related to stock purchase plan 3,611 $ 3 3,608    
Common stock repurchased and retired (in shares)   (1,030)      
Common stock repurchased and retired (203,294) $ (103) (16,245)   (186,946)
Share-based compensation 26,418   26,418    
Ending balance (in shares) at Feb. 28, 2021   24,406      
Ending balance at Feb. 28, 2021 1,239,347 $ 2,441 283,396 (11,656) 965,166
Increase (Decrease) in Stockholders' Equity          
Net income 223,764       223,764
Other comprehensive income (loss), net of tax 11,858     11,858  
Exercise of stock options (in shares)   23      
Exercise of stock options 1,695 $ 2 1,693    
Issuance and settlement of restricted stock (in shares)   202      
Issuance and settlement of restricted stock 0 $ 20 (20)    
Issuance of common stock related to stock purchase plan (in shares)   24      
Issuance of common stock related to stock purchase plan 4,261 $ 2 4,259    
Common stock repurchased and retired (in shares)   (855)      
Common stock repurchased and retired (188,204) $ (85) (20,206)   (167,913)
Share-based compensation 34,618   34,618    
Ending balance (in shares) at Feb. 28, 2022   23,800      
Ending balance at Feb. 28, 2022 1,327,339 $ 2,380 303,740 202 1,021,017
Increase (Decrease) in Stockholders' Equity          
Net income 143,273       143,273
Other comprehensive income (loss), net of tax 4,745     4,745  
Exercise of stock options (in shares)   9      
Exercise of stock options 725 $ 1 724    
Issuance and settlement of restricted stock (in shares)   242      
Issuance and settlement of restricted stock 0 $ 24 (24)    
Issuance of common stock related to stock purchase plan (in shares)   33      
Issuance of common stock related to stock purchase plan 4,341 $ 3 4,338    
Common stock repurchased and retired (in shares)   (90)      
Common stock repurchased and retired (18,365) $ (9) (18,254)   (102)
Share-based compensation 26,753   26,753    
Ending balance (in shares) at Feb. 28, 2023   23,994      
Ending balance at Feb. 28, 2023 $ 1,488,811 $ 2,399 $ 317,277 $ 4,947 $ 1,164,188