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SHARE-BASED COMPENSATION (Details 3) (Restricted Stock Awards and Units, USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Activity of nonvested shares  
Nonvested at the beginning of the period (in shares) 1,098,806
Changes during the period:  
Granted (in shares) 142,347
Forfeited (in shares) (103,329)
Vested (in shares) (301,920)
Nonvested at the end of the period (in shares) 835,904
Vested and expected to vest at the end of the period (in shares) 835,904
Weighted Average Grant Date Fair Value  
Nonvested at the beginning of the period (in dollars per share) $ 14.61
Changes during the period:  
Granted (in dollars per share) $ 15.56
Forfeited (in dollars per share) $ 14.68
Vested (in dollars per share) $ 14.65
Nonvested at the end of the period (in dollars per share) $ 14.75
Vested and expected to vest at the end of the period (in dollars per share) $ 14.75
Additional disclosures  
Total compensation cost not yet recognized (in dollars) $ 8.4
Weighted-average period for recognition of compensation cost not yet recognized 2 years 6 months
Minimum
 
SHARE-BASED COMPENSATION  
Vesting period 3 years
Maximum
 
SHARE-BASED COMPENSATION  
Vesting period 5 years