Financial Derivatives (Referenced/Underlying Assets of Credit Default Swaps) (Details)	Sep. 30, 2012	Dec. 31, 2011
Corporation Debt [Member]
Credit Default Swaps Underlying Asset Liability Allocation	32.00%	59.00%
Commercial Mortgage Backed Securities [Member]
Credit Default Swaps Underlying Asset Liability Allocation	54.00%	20.00%
Loans Payable [Member]
Credit Default Swaps Underlying Asset Liability Allocation	14.00%	21.00%