Summary of Significant Accounting Policies (Summary of Reinsurance Activity) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accounting Policies [Abstract]
Net assumed written premiums	$ 10.7	$ 13.7	$ 36.3	$ 44.1
Net premiums earned	12.7	13.1	39.5	38.0
Provision for claims	9.4	11.0	31.4	30.5
Amortization of capitalized acquisition costs	$ 0.2	$ 0.3	$ 0.9	$ 0.9