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DERIVATIVE INSTRUMENTS (DETAILS) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2011
|
Dec. 31, 2010
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|---|---|---|
| Derivative Fair Values on Consolidated Balance Sheet [Line Items] | ||
| Asset Derivative Fair Value | $ 38,175 | $ 6,641 |
| Liability Derivative Fair Value | 2,035 | 14,986 |
|
Foreign Exchange Forward Contracts [Member] | Designated As Hedging Instrument [Member] | Fair Value Hedge [Member]
|
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| Derivative Fair Values on Consolidated Balance Sheet [Line Items] | ||
| Asset Derivative Fair Value | 16,519 | 0 |
| Liability Derivative Fair Value | 0 | 13,748 |
| Derivative Notional Amount | 540,176 | 612,845 |
|
Foreign Exchange Forward Contracts [Member] | Not Designated as Hedging Instruments [Member] | Investment Portfolio [Member]
|
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| Derivative Fair Values on Consolidated Balance Sheet [Line Items] | ||
| Asset Derivative Fair Value | 7,012 | 2,182 |
| Liability Derivative Fair Value | 1,783 | 746 |
| Derivative Notional Amount | 287,711 | 154,990 |
|
Foreign Exchange Forward Contracts [Member] | Not Designated as Hedging Instruments [Member] | Underwriting Portfolio [Member]
|
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| Derivative Fair Values on Consolidated Balance Sheet [Line Items] | ||
| Asset Derivative Fair Value | 14,644 | 4,459 |
| Liability Derivative Fair Value | 252 | 492 |
| Derivative Notional Amount | $ 955,728 | $ 110,564 |