v2.4.0.8
RESERVE FOR LOSSES AND LOSS EXPENSES (DETAILS 3) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Additional Information Related to Net Incurred Losses [Line Items]        
Net favorable prior year reserve development $ 42,115 $ 74,612 $ 96,613 $ 119,840
Short Tail Lines Insurance And Reinsurance Business [Member]
       
Additional Information Related to Net Incurred Losses [Line Items]        
Net favorable prior year reserve development 32,000 68,000 62,000 87,000
Liability Reinsurance Business [Member]
       
Additional Information Related to Net Incurred Losses [Line Items]        
Net favorable prior year reserve development     38,000  
Professional Lines Reinsurance Business [Member]
       
Additional Information Related to Net Incurred Losses [Line Items]        
Net favorable prior year reserve development       $ 26,000