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FINANCIAL INSTRUMENTS Activity for financial instrument liabilities and related restricted cash (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2014
Foreign Exchange Contract
Sep. 30, 2013
Not Designated as Hedging Instrument
Financial Instruments and Restricted Cash
Sep. 30, 2014
Not Designated as Hedging Instrument
Financial Instruments and Restricted Cash
Sep. 30, 2013
Not Designated as Hedging Instrument
Financial Instruments and Restricted Cash
Sep. 30, 2014
Not Designated as Hedging Instrument
Foreign Exchange Contract
Dec. 31, 2013
Not Designated as Hedging Instrument
Foreign Exchange Contract
Derivative Liability [Roll Forward]            
Derivative Liability     $ 25,090 $ 24,742 $ 25,090  
Short sales of corporate securities     19,512 0 19,512  
Net investment losses (gains)     188 (274)    
Receipt of dividends, net of interest expense     (67) 134    
Other 0 30        
Derivative Liability   24,632 44,723 24,632 24,459  
Balance of financial instrument liabilities and related restricted cash, end of period         $ 24,459 $ 25,090