HEDGES AND OTHER DERIVATIVE FINANCIAL INSTRUMENTS - Fair Value of the Total-return Swap (Details) (Not designated as hedging instrument [Member])	9 Months Ended			9 Months Ended	12 Months Ended		9 Months Ended
	Sep. 30, 2013 Fair Value Hedging [Member] USD ($)	Sep. 30, 2013 Fair Value Hedging [Member] Total Return Swap [Member] USD ($)	Aug. 31, 2013 Fair Value Hedging [Member] Total Return Swap [Member] USD ($)	Sep. 30, 2013 Forward contracts (net) [Member] USD ($)	Dec. 31, 2012 Forward contracts (net) [Member] USD ($)	Sep. 30, 2013 GBP Contract [Member] Forward contracts (net) [Member] USD ($)	Sep. 30, 2013 GBP Contract [Member] Forward contracts (net) [Member] British Pound Contract [Member] USD ($)	Sep. 30, 2013 GBP Contract [Member] Forward contracts (net) [Member] British Pound Contract [Member] GBP (£)	Sep. 30, 2013 USD Contract [Member] Forward contracts (net) [Member] USD ($)
Derivative [Line Items]
Notional		$ 135,561,000	$ 200,000,000	$ 265,003,000	$ 120,573,000	$ 4,643,000		£ 3,000,000	$ 59,511,000
Fair Value	$ 132,000			$ (1,401,000)	$ (803,000)		$ (205,000)