Related Party (Debt Agreements) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Related Party Transactions [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,000,000		$ 2,000,000
Short-term Debt with Pru Funding	73,900,000		73,900,000		27,800,000
Interest Expense, Short-term Borrowings	65,000	86,000	158,000	163,000
Prudential Financial Debt, Interest Rate			4.49%	5.18%
Prudential Financial Debt, Interest Expense		2,300,000		4,500,000
Long-term debt with PFI	600,000,000	175,000,000	600,000,000	175,000,000
Long-term debt interest expense	$ 6,700,000	$ 9,000,000	$ 13,500,000	$ 18,000,000