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SHARE-BASED COMPENSATION (Details 2) (Options, USD $)
 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Apr. 30, 1997
1997 Plan
May 31, 2007
2004 Plan
Dec. 31, 2012
2004 Plan
Dec. 31, 2011
2004 Plan
Mar. 31, 2011
2004 Plan
Dec. 31, 2010
2004 Plan
Sep. 30, 2004
2004 Plan
Dec. 31, 2012
Minimum
Dec. 31, 2012
Maximum
SHARE-BASED COMPENSATION                        
Vesting period                     3 years 5 years
Contractual terms 10 years                      
Shares authorized for grants       2,000,000   4,944,831   1,402,589   1,500,000    
Additional shares authorized for grants         1,000,000              
Shares available for future grants           1,604,198 2,539,341   57,758      
Weighted-average assumptions used in estimating the fair value of the stock options granted to employees                        
Expected volatility (as a percent) 77.20%                      
Risk free interest rate (as a percent) 1.80%                      
Expected dividends (as a percent) 1.00%                      
Expected life 8 years                      
Weighted average fair value (in dollars per share) $ 9.65                      
Summary of stock option activity for the stock option plans                        
Outstanding at the beginning of the period (in shares) 40,166                      
Changes during the period:                        
Granted (in shares) 319,615                      
Expired (in shares) (8,105)                      
Forfeited (in shares) (36,307)                      
Outstanding at the end of the period (in shares) 315,369 40,166                    
Vested and expected to vest at the end of the period (in shares) 283,373                      
Exercisable at the end of the period (in shares) 32,061                      
Weighted Average Exercise Price                        
Outstanding at the beginning of the period (in dollars per share) $ 428.16                      
Changes during the period:                        
Granted (in dollars per share) $ 14.33                      
Expired (in dollars per share) $ 180.49                      
Forfeited (in dollars per share) $ 14.31                      
Outstanding at the end of the period (in dollars per share) $ 62.77 $ 428.16                    
Vested and expected to vest at the end of the period (in dollars per share) $ 68.24                      
Exercisable at the end of the period (in dollars per share) $ 490.77                      
Weighted Average Remaining Contractual Term                        
Outstanding at the end of the period 8 years 8 months 12 days                      
Vested and expected to vest at the end of the period 8 years 7 months 6 days                      
Exercisable at the end of the period 2 years 9 months 18 days                      
Aggregate Intrinsic Value                        
Outstanding at the end of the period (in dollars) $ 356,000                      
Vested and expected to vest at the end of the period (in dollars) 315,000                      
Additional disclosures                        
Total compensation cost not yet recognized (in dollars) 2,300,000                      
Weighted-average period for recognition of compensation cost not yet recognized 3 years 10 months 24 days                      
Total fair value of shares vested (in dollars) $ 14,000 $ 17,000 $ 200,000