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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY AND COMPREHENSIVE INCOME (USD $)
Total
Additional paid-in capital
Statutory reserve
Retained earnings
Accumulated other comprehensive income (loss)
Total comprehensive income
Class A Common shares
Class B Common shares
Class B Common shares
Common shares subscription receivable
Balance at Feb. 28, 2009 $ 3,355,345 $ 559,898 $ 2,660,818 $ 21,400 $ 113,229     $ 120,000 $ (120,000)
Balance (in shares) at Feb. 28, 2009               120,000,000  
Increase (Decrease) in Stockholders' Equity                  
Capital contribution 219,743 219,743              
Net income 14,244,959     14,244,959   14,244,959      
Provision for statutory reserve     2,196,625 (2,196,625)          
Foreign currency translation adjustment 21,493       21,493 21,493      
Net unrealized gains (loss) on available-for-sale securities, net of tax effect of $30,474, $(712) and $(28,177) for the year ended 2012, 2011 and 2010 respectively 84,531       84,531 84,531      
Total comprehensive income           14,350,983      
Balance at Feb. 28, 2010 17,926,071 779,641 4,857,443 12,069,734 219,253     120,000 (120,000)
Balance (in shares) at Feb. 28, 2010               120,000,000  
Increase (Decrease) in Stockholders' Equity                  
Subscription received 120,000               120,000
Conversion of Series A convertible redeemable prefer shares upon initial public offering 9,000,000 8,995,000           5,000  
Conversion of Series A convertible redeemable prefer shares upon initial public offering (in shares)               5,000,000  
Issuance of Class A common shares, net of issuance cost of $(2,430,995) 127,002,205 126,974,605         27,600    
Issuance of Class A common shares, net of issuance cost of $(2,430,995) (in shares)             27,600,000    
Net income 24,041,150     24,041,150   24,041,150      
Provision for statutory reserve     3,383,254 (3,383,254)          
Dividends to shareholders (30,000,000) (30,000,000)              
Share-based compensation 5,306,472 5,306,472              
Foreign currency translation adjustment 1,658,010       1,658,010 1,658,010      
Transfer to statements of operations of realized gains on available for sale securities, net of tax effect of $1,607 (4,822)       (4,822) (4,822)      
Net unrealized gains (loss) on available-for-sale securities, net of tax effect of $30,474, $(712) and $(28,177) for the year ended 2012, 2011 and 2010 respectively 2,138       2,138 2,138      
Total comprehensive income           25,696,476      
Balance at Feb. 28, 2011 155,051,224 112,055,718 8,240,697 32,727,630 1,874,579   27,600 125,000  
Balance (in shares) at Feb. 28, 2011             27,600,000 125,000,000  
Increase (Decrease) in Stockholders' Equity                  
Conversion of Class B common shares to Class A common shares             15,319 (15,319)  
Conversion of Class B common shares to Class A common shares (in shares)             15,319,000 (15,319,000)  
Net income 24,313,653     24,313,653   24,313,653      
Provision for statutory reserve     2,262,016 (2,262,016)          
Issuance of common shares pursuant to stock plan (184,614) (186,972)         2,358    
Issuance of common shares pursuant to stock plan (in shares)             2,358,044    
Share-based compensation 7,901,243 7,901,243              
Foreign currency translation adjustment 3,127,206       3,127,206 3,127,206      
Net unrealized gains (loss) on available-for-sale securities, net of tax effect of $30,474, $(712) and $(28,177) for the year ended 2012, 2011 and 2010 respectively (91,421)       (91,421) (91,421)      
Total comprehensive income           27,349,438      
Balance at Feb. 29, 2012 $ 190,117,291 $ 119,769,989 $ 10,502,713 $ 54,779,267 $ 4,910,364   $ 45,277 $ 109,681  
Balance (in shares) at Feb. 29, 2012             45,277,044 109,681,000