Summary of Significant Accounting Policies (Summary of Reinsurance Activity) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Accounting Policies [Abstract]
Net assumed written premiums	$ 15.5us-gaap_AssumedPremiumsWritten	$ 14.7us-gaap_AssumedPremiumsWritten
Net premiums earned	12.1us-gaap_PremiumsEarnedNet	13.2us-gaap_PremiumsEarnedNet
Provision for claims	8.6	11.0
Amortization of capitalized acquisition costs	$ 0.3us-gaap_AmortizationOfAcquisitionCosts	$ 0.3us-gaap_AmortizationOfAcquisitionCosts

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The amount of expense recognized in the current period that reflects the allocation of capitalized costs associated with acquisition of business. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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Amount of written premiums assumed from other entities.

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Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred.

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Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

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