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HEDGES AND OTHER DERIVATIVE INSTRUMENTS - Fair Value of the Total-return Swap (Details) (Not Designated as Hedging Instrument, Fair Value Hedging, Total-return swaps, USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Aug. 31, 2013
Not Designated as Hedging Instrument | Fair Value Hedging | Total-return swaps
   
Derivative [Line Items]    
Notional $ 189,089 $ 200,000
Fair Value $ 4,515