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SUBSEQUENT EVENTS (Details) (USD $)
0 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 0 Months Ended
Jul. 26, 2010
Feb. 28, 2013
Feb. 29, 2012
Feb. 28, 2011
Mar. 02, 2013
Subsequent events
Jun. 30, 2013
Subsequent events
Century Mingde
Mar. 02, 2013
Subsequent events
Minimum
Mar. 02, 2013
Subsequent events
Maximum
Subsequent events                
Number of nonvested shares granted 5,419,500 6,845,800 586,100 5,419,500 564,000      
Vesting period of nonvested shares             1 year 10 years
Fair value per non-vested share granted (in dollars per share) $ 4.05 $ 5.56 $ 5.40 $ 4.05 $ 4.46      
Portion of the total purchase price received in the process of redemption of the investmentPortion of the total purchase price received in the process of redemption of the investment           $ 809,000