EARNINGS PER SHARE (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 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)	$ 0.16	$ 0.16
Total shares of common stock, diluted (in dollars per share)	$ 0.16	$ 0.16
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)	$ 0.16	$ 0.16
Total shares of common stock, diluted (in dollars per share)	$ 0.16	$ 0.16
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)	$ 0.15	$ 0.15
Total shares of common stock, diluted (in dollars per share)	$ 0.15	$ 0.15