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9. WARRANTS (Tables)
12 Months Ended
Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Outstanding warrants
  Shares Underlying Warrants   Weighted- Average Exercise Price   Weighted- Average Remaining Contractual Term (in years)   Aggregate
Intrinsic Value (In-The-Money)
 
                     
Outstanding and exercisable at December 31, 2011     22       16.41       1.0     $  
Outstanding and exercisable at December 31, 2012     6       20.20           $