v2.4.0.8
DERIVATIVE INSTRUMENTS (DETAILS) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Derivative Fair Values on Consolidated Balance Sheet [Line Items]    
Asset Derivative Fair Value $ 7,792 $ 5,838
Liability Derivative Fair Value 9,722 3,737
Other Assets [Member]
   
Derivative Fair Values on Consolidated Balance Sheet [Line Items]    
Asset Derivative Fair Value 7,792 5,838
Other Liabilities [Member]
   
Derivative Fair Values on Consolidated Balance Sheet [Line Items]    
Liability Derivative Fair Value 9,722 3,737
Foreign Exchange Forward Contracts [Member] | Not Designated as Hedging Instruments [Member] | Investment Portfolio [Member]
   
Derivative Fair Values on Consolidated Balance Sheet [Line Items]    
Derivative Notional Amount 376,870 287,819
Foreign Exchange Forward Contracts [Member] | Not Designated as Hedging Instruments [Member] | Underwriting Portfolio [Member]
   
Derivative Fair Values on Consolidated Balance Sheet [Line Items]    
Derivative Notional Amount 524,971 476,191
Foreign Exchange Forward Contracts [Member] | Other Assets [Member] | Not Designated as Hedging Instruments [Member] | Investment Portfolio [Member]
   
Derivative Fair Values on Consolidated Balance Sheet [Line Items]    
Asset Derivative Fair Value 6,735 1,067
Foreign Exchange Forward Contracts [Member] | Other Assets [Member] | Not Designated as Hedging Instruments [Member] | Underwriting Portfolio [Member]
   
Derivative Fair Values on Consolidated Balance Sheet [Line Items]    
Asset Derivative Fair Value 1,057 4,771
Foreign Exchange Forward Contracts [Member] | Other Liabilities [Member] | Not Designated as Hedging Instruments [Member] | Investment Portfolio [Member]
   
Derivative Fair Values on Consolidated Balance Sheet [Line Items]    
Liability Derivative Fair Value 25 2,733
Foreign Exchange Forward Contracts [Member] | Other Liabilities [Member] | Not Designated as Hedging Instruments [Member] | Underwriting Portfolio [Member]
   
Derivative Fair Values on Consolidated Balance Sheet [Line Items]    
Liability Derivative Fair Value $ 9,697 $ 1,004