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 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
EARNINGS PER SHARE        
Anti-dilutive effects on net earnings (loss) per share     0 0
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) $ 0.25 $ 0.23 $ 0.40 $ 0.38
Total shares of common stock, diluted (in dollars per share) $ 0.25 $ 0.23 $ 0.40 $ 0.38
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) $ 0.25 $ 0.23 $ 0.40 $ 0.38
Total shares of common stock, diluted (in dollars per share) $ 0.25 $ 0.23 $ 0.40 $ 0.38
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) $ 0.24 $ 0.22 $ 0.40 $ 0.38
Total shares of common stock, diluted (in dollars per share) $ 0.24 $ 0.22 $ 0.40 $ 0.38