SHARE-BASED COMPENSATION (Details 4) (Nonvested share awards, USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Shares
Nonvested, beginning of period (in shares)	430,000
Granted (in shares)	430,000	430,000	430,000
Vested (in shares)	(430,000)
Outstanding, end of period (in shares)	430,000	430,000
Weighted Average Grant Date Fair Value
Nonvested, beginning of period (in dollars per shares)	$ 13.39
Granted (in dollars per shares)	$ 11.85	$ 13.39	$ 11.67
Vested (in dollars per shares)	$ 13.39
Outstanding, end of period (in dollars per shares)	$ 11.85	$ 13.39
Vesting period	12 months	12 months
Awards vesting after six months from grant date
Shares
Vested (in shares)			230,000
Weighted Average Grant Date Fair Value
Vesting period			6 months
Awards vesting after 12 months from grant date
Shares
Vested (in shares)			200,000
Weighted Average Grant Date Fair Value
Vesting period			12 months