Summary of Significant Accounting Policies (Summary of Reinsurance Activity) (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]
Net assumed written premiums	$ 10.6	$ 10.9	$ 26.1	$ 25.6
Net premiums earned	12.6	13.6	24.7	26.8
Provision for claims	9.2	11.0	17.8	22.0
Amortization of capitalized acquisition costs	$ 0.2	$ 0.4	$ 0.5	$ 0.7