Quarterly report pursuant to Section 13 or 15(d)

EARNINGS PER SHARE (Details)

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EARNINGS PER SHARE (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Basic and diluted earnings per share attributable to common and restricted shares of common stock        
Total shares of common stock, basic (in dollars per share) $ 0.20 $ 0.17 $ 0.54 $ 0.48
Total shares of common stock, diluted (in dollars per share) $ 0.20 $ 0.17 $ 0.54 $ 0.48
Common Stock
       
Basic and diluted earnings per share attributable to common and restricted shares of common stock        
Total shares of common stock, basic (in dollars per share) $ 0.20 $ 0.17 $ 0.54 $ 0.48
Total shares of common stock, diluted (in dollars per share) $ 0.20 $ 0.17 $ 0.54 $ 0.48
Restricted shares of common stock
       
Basic and diluted earnings per share attributable to common and restricted shares of common stock        
Total shares of common stock, basic (in dollars per share) $ 0.20 $ 0.17 $ 0.53 $ 0.47
Total shares of common stock, diluted (in dollars per share) $ 0.20 $ 0.17 $ 0.53 $ 0.47