Reinsurance (Reinsurers' Limits of Liability) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Reinsurance Maintained by Layers [Line Items]
Catastrophe reinsurance retention	$ 4,000,000
Life insurance policy reinsurance limit	50,000
Reinsurance recoverable	1,564,000	1,541,000
Single Reinsurer [Member]
Reinsurance Maintained by Layers [Line Items]
Reinsurance recoverable	58,000	295,000
First Layer [Member]
Reinsurance Maintained by Layers [Line Items]
Percent of reinsured losses covered by layer	100.00%
Covered losses	6,000,000
Reinsurer's limit of liability	4,000,000
Second Layer [Member]
Reinsurance Maintained by Layers [Line Items]
Percent of reinsured losses covered by layer	100.00%
Covered losses	7,500,000
Reinsurer's limit of liability	10,000,000
Third Layer [Member]
Reinsurance Maintained by Layers [Line Items]
Percent of reinsured losses covered by layer	100.00%
Covered losses	25,000,000
Reinsurer's limit of liability	17,500,000
Fourth Layer [Member]
Reinsurance Maintained by Layers [Line Items]
Percent of reinsured losses covered by layer	100.00%
Covered losses	30,000,000
Reinsurer's limit of liability	$ 42,500,000