Financial Derivatives (Referenced/Underlying Assets of Credit Default Swaps) (Details)	Sep. 30, 2011	Dec. 31, 2010
Corporation Debt [Member]
Credit Default Swaps Underlying Asset Liability Allocation	75.00%	62.00%
Commercial Mortgage Backed Securities [Member]
Credit Default Swaps Underlying Asset Liability Allocation	12.00%	28.00%
Loans Payable [Member]
Credit Default Swaps Underlying Asset Liability Allocation	13.00%	10.00%