Reinsurance Liability For Catastrophe Claims Disclosure (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Liability for Catastrophe Claims [Line Items]
Document Period End Date	Mar. 31, 2015
Catastrophe [Member]
Liability for Catastrophe Claims [Line Items]
Number of Catastrophic Events	5
Catastrophic Event, Incurred Losses and Loss Adjustment Expense	15,259
Catastrophic Events, Impact on Combined Ratio	19.60%
Catastrophe [Member] | Catastrophe Loss Size, Range 1 [Member]
Liability for Catastrophe Claims [Line Items]
Number of Catastrophic Events	5
Catastrophic Event, Incurred Losses and Loss Adjustment Expense	15,259
Catastrophic Events, Impact on Combined Ratio	19.60%
Minimum [Member] | Catastrophe [Member] | Catastrophe Loss Size, Range 1 [Member]
Liability for Catastrophe Claims [Line Items]
Catastrophic Events, Size of Losses	1,000	1,000
Maximum [Member] | Catastrophe [Member] | Catastrophe Loss Size, Range 1 [Member]
Liability for Catastrophe Claims [Line Items]
Catastrophic Events, Size of Losses	5,000	5,000
Maximum [Member] | Catastrophe [Member] | Catastrophe Loss Size, Range 2 [Member]
Liability for Catastrophe Claims [Line Items]
Catastrophic Events, Size of Losses	1,000	$ 1,000