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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) | Total | Additional paid-in capital | Statutory reserve | Retained earnings | Accumulated other comprehensive income (loss) | Class A Common shares | Class B Common shares | Class B Common shares Common shares subscription receivable
--- | --- | --- | --- | --- | --- | --- | --- | ---
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 |  |  |  |
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 |  |  |
Transfer to statements of operations of realized gains on available for sale securities, net of tax effect of $1,607 | (4,822) |  |  |  | (4,822) |  |  |
Net unrealized gains (loss) on available-for-sale securities, net of tax effect of $(8,583), $30,474 and $(712) for the year ended 2013, 2012 and 2011 respectively | 2,138 |  |  |  | 2,138 |  |  |
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 |  |  |  |
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 |  |  |
Net unrealized gains (loss) on available-for-sale securities, net of tax effect of $(8,583), $30,474 and $(712) for the year ended 2013, 2012 and 2011 respectively | (91,421) |  |  |  | (91,421) |  |  |
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 |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |
Conversion of Class B common shares to Class A common shares |  |  |  |  |  | 21,875 | (21,875) |
Conversion of Class B common shares to Class A common shares (in shares) |  |  |  |  |  | 21,875,000 | (21,875,000) |
Net income | 33,440,066 |  |  | 33,440,066 |  |  |  |
Provision for statutory reserve |  |  | 1,788,628 | (1,788,628) |  |  |  |
Dividends to shareholders | (39,030,038) | (39,030,038) |  |  |  |  |  |
Issuance of common shares pursuant to stock plan | (571,265) | (573,005) |  |  |  | 1,740 |  |
Issuance of common shares pursuant to stock plan (in shares) |  |  |  |  |  | 1,740,044 |  |
Share-based compensation | 8,283,900 | 8,283,900 |  |  |  |  |  |
Share repurchase | (2,435,037) | (2,434,459) |  |  |  | (578) |  |
Share repurchase (in shares) |  |  |  |  |  | (577,938) |  |
Foreign currency translation adjustment | 1,614,614 |  |  |  | 1,614,614 |  |  |
Net unrealized gains (loss) on available-for-sale securities, net of tax effect of $(8,583), $30,474 and $(712) for the year ended 2013, 2012 and 2011 respectively | 25,748 |  |  |  | 25,748 |  |  |
Balance at Feb. 28, 2013 | $ 191,445,279 | $ 86,016,387 | $ 12,291,341 | $ 86,430,705 | $ 6,550,726 | $ 68,314 | $ 87,806 |
Balance (in shares) at Feb. 28, 2013 |  |  |  |  |  | 68,314,150 | 87,806,000 |

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