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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)
 9 Months Ended
Sep. 30, 2012
FAIR VALUE OF FINANCIAL INSTRUMENTS [Abstract]  
Assets and liabilities measured at fair value on a recurring basis
The following table presents information about ALC's assets and liabilities measured at fair value on a recurring basis as of September 30, 2012 and December 31, 2011, and indicates the fair value hierarchy of the valuation techniques utilized by ALC to determine such fair value (in thousands):
 
   
Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)
  
Significant
Other
Observable
 Inputs (Level 2)
  
Significant
Unobservable
Inputs
(Level 3)
  
Total
 
September 30, 2012
            
Assets
            
      Equity investments
 $894  $—  $—  $894 
                  
December 31, 2011
                
Assets
                
      Equity investments
 $1,028  $—  $—  $1,028