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STOCK-BASED COMPENSATION - ADDITIONAL INFORMATION (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
6 Months Ended 0 Months Ended 3 Months Ended 6 Months Ended 0 Months Ended
Jun. 30, 2013
Jan. 11, 2012
2012 Non Employee Directors Compensation Plan
Jun. 30, 2013
2012 Long Term Incentive Plan
Jun. 30, 2013
2006 Stock Option Plan
Jun. 30, 2013
2006 Stock Option Plan
Maximum
Jun. 30, 2013
Stock Options Fiscal 2006 Plan
Jun. 13, 2013
Non Employee Directors
Restricted Stock Units (RSUs)
Jan. 08, 2013
Non Employee Directors
Restricted Stock Units (RSUs)
Jan. 08, 2017
Scenario, Forecast
Non Employee Directors
Restricted Stock Units (RSUs)
Jan. 08, 2016
Scenario, Forecast
Non Employee Directors
Restricted Stock Units (RSUs)
Jan. 08, 2015
Scenario, Forecast
Non Employee Directors
Restricted Stock Units (RSUs)
Jan. 08, 2014
Scenario, Forecast
Non Employee Directors
Restricted Stock Units (RSUs)
Compensation Related Costs Share Based Payments Disclosure [Line Items]                        
Shares authorized to be reserved for issuance (in shares)   600,000                    
2012 Directors Plan expiration period   10 years                    
Non vested common stock shares issued (in shares)             8,784 5,257        
Percentage of Restricted stock shares vested (in hundredths)                 25.00% 25.00% 25.00% 25.00%
Fair value of restricted stock             $ 225 $ 101        
Common stock shares subject to outstanding awards that expire or terminate that are available for awards to be granted (in shares)         3,437,072              
Common stock shares available for issuance (in shares)     6,037,728 872,608                
Stock options issued (in shares)     1,865,000                  
Stock options issued, grant date fair value     17,710                  
Number of remaining shares (in shares)     6,910,336                  
Options issued expiration period           10 years            
Total unrecognized compensation cost related to non-vested share-based compensation awards granted $ 35,058                      
Total unrecognized compensation cost related to non-vested share-based compensation awards granted, period for recognition 2 years