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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
Balance (in shares) at Feb. 29, 2016   27,735      
Balance at Feb. 29, 2016 $ 930,043 $ 2,774 $ 198,077 $ 665 $ 728,527
Increase (Decrease) in Stockholders' Equity          
Income from continuing operations 144,310       144,310
Loss from discontinued operations (3,621)       (3,621)
Other Comprehensive Income (Loss), Net of Tax 508     508  
Exercise of stock options, net (in shares)   170      
Exercise of stock options 7,305 $ 17 7,288    
Issuance of restricted stock (in shares)   21      
Net issuance and settlement of restricted stock 1,735 $ 2 1,733    
Issuance of common stock related to employee stock purchase plan (in shares)   32      
Issuance of common stock related to stock purchase plan 2,488 $ 3 2,485    
Common stock repurchased and retired (in shares)   (929)      
Common stock repurchased and retired (75,595) $ (93) (5,272)   (70,230)
Share-based compensation 13,861   13,861    
Balance (in shares) at Feb. 28, 2017   27,029      
Balance at Feb. 28, 2017 1,020,766 $ 2,703 218,760 1,173 798,130
Increase (Decrease) in Stockholders' Equity          
Cumulative effect of accounting change (268)   588   (856)
Income from continuing operations 128,882       128,882
Loss from discontinued operations (84,436)       (84,436)
Other Comprehensive Income (Loss), Net of Tax (542)     (542)  
Exercise of stock options, net (in shares)   126      
Exercise of stock options 6,559 $ 12 6,547    
Issuance of restricted stock (in shares)   198      
Net issuance and settlement of restricted stock (298) $ 20 (318)    
Issuance of common stock related to employee stock purchase plan (in shares)   16      
Issuance of common stock related to stock purchase plan 1,527 $ 2 1,525    
Common stock repurchased and retired (in shares)   (793)      
Common stock repurchased and retired (73,053) $ (79) (10,892)   (62,082)
Share-based compensation 15,054   15,054    
Balance (in shares) at Feb. 28, 2018   26,576      
Balance at Feb. 28, 2018 1,014,459 $ 2,658 230,676 631 780,494
Increase (Decrease) in Stockholders' Equity          
Income from continuing operations 174,224       174,224
Loss from discontinued operations (5,679)       (5,679)
Other Comprehensive Income (Loss), Net of Tax 560     560  
Exercise of stock options, net (in shares)   126      
Exercise of stock options 6,275 $ 13 6,262    
Issuance of restricted stock (in shares)   147      
Net issuance and settlement of restricted stock 0 $ 15 (15)    
Issuance of common stock related to employee stock purchase plan (in shares)   31      
Issuance of common stock related to stock purchase plan 2,395 $ 3 2,392    
Common stock repurchased and retired (in shares)   (1,934)      
Common stock repurchased and retired (217,493) $ (194) (14,783)   (202,516)
Share-based compensation 22,053   22,053    
Balance (in shares) at Feb. 28, 2019   24,946      
Balance at Feb. 28, 2019 996,637 $ 2,495 $ 246,585 $ 1,191 746,366
Increase (Decrease) in Stockholders' Equity          
Cumulative effect of accounting change $ (157)       $ (157)