Summary of Significant Accounting Policies (Summary of Reinsurance Activity) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accounting Policies [Abstract]
Net assumed written premiums	$ 9.8	$ 10.7	$ 35.9	$ 36.3
Net premiums earned	12.0	12.7	36.7	39.5
Provision for claims	8.4	9.4	26.2	31.4
Amortization of capitalized acquisition costs	$ 0.4	$ 0.2	$ 0.9	$ 0.9