v2.4.0.6
INVESTMENTS (DETAILS 10) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
INVESTMENTS [Abstract]    
Collateral in Trust for inter-company agreements $ 1,921,586 $ 1,785,961
Collateral for secured letter of credit facility 441,229 405,037
Collateral in Trust for third party agreements 238,395 217,905
Securities on deposit with regulatory authorities 49,543 87,657
Total restricted investments $ 2,650,753 $ 2,496,560