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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
Dec. 31, 2012
Jun. 30, 2012
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 42,788,671 43,350,831
Common stock, shares outstanding 42,788,671 43,222,031
Treasury stock, at cost 0 128,800