Related Party (Debt Agreements) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Related Party Transactions [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,000,000
Short-term Debt with Pru Funding	28,000,000
Interest Expense, Short-term Borrowings	83,000	93,000
Prudential Financial Debt, Repayment Amount	200,000,000
Long-term debt with PFI	400,000,000		400,000,000
Long-term debt interest expense	5,000,000	7,000,000
Affiliated Investment Management Expense	$ 2,000,000	$ 2,000,000