Policy and Claim Reserves Policy and Claim Reserves (Development to the Liability for Unpaid Claims and Claim Adjustment Expenses) (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	$ 6,347
Total reinsurance recoverable on unpaid claims	1,184
Unallocated claims adjustment expenses	0
Other	0
Aggregate reconciling items	0
Total gross liability for unpaid claims and claim adjustment expense	7,531
Homeowners' Insurance [Member]
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	1,972
Total reinsurance recoverable on unpaid claims	889
Dwelling Fire Insurance [Member]
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	2,938
Total reinsurance recoverable on unpaid claims	295
Other Liability Insurance [Member]
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	1,382
Total reinsurance recoverable on unpaid claims	0
Other Short-duration Insurance Line [Member]
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	55
Total reinsurance recoverable on unpaid claims	0
Financial Guarantee Insurance Product Line [Member]
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Total gross liability for unpaid claims and claim adjustment expense	$ 0