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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (Assets measured at fair value, USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Quoted Prices in Active Markets for Identical Assets (Level 1)
   
Assets and liabilities measured at fair value    
Trading Securities $ 21,342 $ 19,152
Carrying Value
   
Assets and liabilities measured at fair value    
Trading Securities $ 21,342 $ 19,152