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FINANCIAL INSTRUMENTS, Non-Marketable Securities (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Financial Instruments [Abstract]        
Carrying value of non marketable securities after recording OTTI $ 3,900,000 $ 3,900,000   $ 4,400,000
Other than Temporary Impairment Losses, Investments 500,000 500,000    
Recorded impairment charges on non marketable securities     $ 0