Debt Debt Margins Payable (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Margins Payable [Abstract]
Carrying Value of Margins Payable	$ 0		$ 0		$ 59,681
Margin Rate on Securities	0.503%		0.503%		0.516%
Interest and Debt Expense	$ 3	$ 70	$ 133	$ 404