Summary of Significant Accounting Policies (Revenue Recognition) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accounting Policies [Abstract]
Servicing revenue	$ 0.9	$ 0.2	$ 1.4	$ 0.4