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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) (USD $) | 12 Months Ended
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Feb. 28, 2011
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY |
Issuance of Class A common shares, issuance cost | $ (2,430,995)
Tax effect of transfers to statements of operations of realized gains on available-for-sale securities | 1,607
Tax effect of net unrealized gains/(loss) on available-for-sale securities | $ (712)

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